2024-03-28T15:05:59Z
https://journal.ugm.ac.id/index/oai
oai:jurnal.ugm.ac.id:article/577
2015-11-19T03:36:33Z
jikfkt:ART
"110101 2011 eng "
2477-3751
0126-4451
dc
Evaluasi Awal Kombinasi Uji Provenans dan Keturunan Araucaria Cunninghamii Umur 12 Bulan di Bondowoso, Jawa Timur
Setiadi, Dedi
Balai Besar Penelitian Bioteknologi dan Pemuliaan Tanaman Hutan, Yogyakarta
progeny test; early growth; heritability; Araucaria cunninghamii
Uji keturunan Araucaria cunninghamii telah dibangun tahun 2008 di Bondowoso Jawa Timur. Sebanyak 80 famili dari enam sumber benih (Fak-fak, Sorong, Serui, Wamena, Manokwari dan Queensland). Uji keturunan dirancang menggunakan rancangan acak lengkap berblok (Randomized Completely Block Design), 4 pohon per plot, 4 ulangan dengan jarak tanam 4 m x 2 m. pada umur 12 bulan perbedaan tinggi dan diameter di antara sumber benih berbeda nyata. Persen tumbuh semua provenans umumnya tinggi (96,7-100%). Perbedaan famili dalam sumber benih sangat berbeda nyata baik untuk tinggi maupun diameter. Heritabilitas pertumbuhan tinggi (h2f = 0,58; h2i = 0,28) dan diameter (h2f = 0,55; h2i = 0,30) termasuk klasifikasi sedang. Korelasi genetik antara tinggi dan diameter cukup kuat (rg = 0,78).
Kata kunci: Araucaria cunninghamii, uji keturunan, pertumbuhan awal, heritabilitas.
Early Evaluation of Provenance and Progeny Trial Combination of Araucaria Cunninghamii Age 12 Months in Bondowoso, East Java
Abstract
A progeny test of Araucaria cunninghamii seedling seed orchard was established in 2008 in Bondowoso, East Java. The progeny trial comprises of eighty open-pollinated families collected from six seed sources (Fak-fak, Sorong, Serui, Wamena, Manokwari and Queensland). The trial was designed as a Randomized Complete Block Design (RCBD) consisted of 80 seedlots, 4 tree-line plots, 4 replicates with spacing of 4 m x 2 m. At 12 months of age there were significant differences among provenances for tree height and stem diameter. The survival rate of all provenances was high (96.7 -100%). Differences between families within seed source were significant both for height and diameter growth. Estimated heritability for height was moderate (12f= 0.58; h2 = 0.28) and also for diameter (f = 0.55; h21 = 0.30). Genetic correlation between height and diameter was quite strong (rg = 0.78).
Faculty of Forestry, Universitas Gadjah Mada
2011-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/577
Jurnal Ilmu Kehutanan; Vol 5, No 1 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/578
2015-11-19T03:36:33Z
jikfkt:ART
"110101 2011 eng "
2477-3751
0126-4451
dc
Analisis Perambahan Hutan di Taman Nasional Bukit Barisan Selatan (Studi Kasus Desa Tirom Kecamatan Pematang Sawa Kabupaten Tanggamus)
Deni, Deni
Departemen Konservasi Sumberdaya Hutan, Fakultas Kehutanan, Universitas Kuningan, Jawa Barat
Array
Taman Nasional di Indonesia sebagian besar memiliki masalah terkait keberadaan manusia. Taman Nasional Bukit Barisan Selatan (TNBBS), sejak penunjukannya selalu ada konflik dengan masyarakat di sekitarnya. Di TNBBS telah ada tindakan penggunaan lahan illegal dimana hal ini sering disebut dengan perambahan hutan. Perambahan hutan yang terjadi di Desa Tirom menjadi menarik untuk diperhatikan karena Desa Tirom memiliki penanganan konflik yang lebih rumit dibandingkan dengan desa-desa lainnya di sekitar TNBBS.
Penelitian ini mencoba mengungkap faktor apa saja yang menyebabkan tindakan perambahan hutan oleh masyarakat Desa Tirom di Kecamatan Pematang Sawa, Kabupaten Tanggamus. Penelitian ini menggunakan metode deskriptif kualitatif dan metode kuantitatif untuk menguji factor kepemilikan lahan legal dan pendapatan masyarakat sebagai factor yang mempengaruhi tindakan perambahan hutan. Dalam metode kualitatif, responden dipilih secara purposive dan wawancara dilakukan secara mendalam, sementara itu teknik survey dilakukan untuk menguji secara kuantitatif.
Berdasarkan hasil wawancara mendalam disimpulkan adanya beberapa masalah social ekonomi yang dialami masyarakat Desa Tirom seperti pendapatan rendah, sedikitnya sumber penghidupan dan kurangnya kapasitas masyarakat dalam mengelola pertanian lahan sempit. Berdasarkan hasil analisis regresi diketahui bahwa tidak ada hubungan yang kuat antara tindakan perambahan lahan dengan pendapatan dan kepemilikan lahan pribadi. Studi ini menunjukkan juga bahwa ada faktor lain (selain faktor pendapatan dan kepemilikan lahan pribadi) yang menyebabkan perambahan hutan oleh masyarakat Desa Tirom. Faktor-faktor ini perlu dikaji dalam penelitian lebih lanjut.
Kata kunci: Perambahan, Desa Tirom, Taman Nasional Bukit Barisan Selatan
Analysis of Forest Encroachment in Bukit Barisan Selatan National Park (Study case in Tirom Village, Pematang Sawa Sub Regency, Tanggamus Regency)
Abstract
Most of National Parks in Indonesia have their problems related to human existence in conservation area. Since its establishment, there has been a conflict between Bukit Barisan Selatan National Park (BBSNP) with the surrounding communities. In the BBSNP, there have been acts of illegal landusage where it is commonly referred as forest encroachment. Forest encroachment in Tirom village is becoming interesting to study because it needs more complicated handling compared to other villages.
This study aims to reveal the factors led to forest encroachment action by people of Tirom village, Pematang Sawa sub-district, Tanggamus District. This social research used descriptive qualitative and quantitative methods to test the legal land ownership factors and people income as factors affecting forest encroachment action. In this method, respondents were chosen purposively and interview was conducted deeply (in-depth interview) on each respondent.
Based on the results of in-depth interviews it is concluded that there are several socio-economic problems experienced by the Tirom village including low income, limited sources of livelihood, and low capacity of communities in managing small areas. Based on regression analysis resultsit was shown that there is no strong relationship between the act of appropriation (as seen from the encroachment of land area) with revenues and private land ownership. This study also shows that there are other factors (beside income and private land ownership factors) that led to forest encroachment by the Tirom Village communities. These other factors need to be tested through further research.
Faculty of Forestry, Universitas Gadjah Mada
2011-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/578
Jurnal Ilmu Kehutanan; Vol 5, No 1 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/579
2015-11-19T03:36:33Z
jikfkt:ART
"110101 2011 eng "
2477-3751
0126-4451
dc
Komponen Kimia Kayu Jati dengan Pertumbuhan Eksentris
Lukmandaru, Ganis
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Tectona Grandis; eccentric wood; leaning tree; chemical properties; increment rate
Tujuan penelitian ini adalah untuk mengetahui kualitas kayu cacat. Spesimen penelitian berupa 10 pohon miring yang diperoleh dari kegiatan penjarangan dari tegakan jati (Tectona grandis L.f.) di Randublatung, Jawa Tengah. Pada setiap pohon, kayu di bagian eksentrisnya dipisahkan \, kemudian sampel serbuk kayu diambil pada bagian teras terluar pada kedua lebar lingkaran tahun maksimum (bagian atas pohon miring) dan pada arah yang berlawanan, yaitu yang mempunyai lebar lingkaran tahun minimum (bagian bawah pohon miring). Serbuk kayu dihaluskan sampai mencapai 40-60 mesh untuk analisis kimia. Analisis data melalui uji t pohon pada kadar ekstraktif etanol-benzena (4-12%), kadar terlarut air panas (1-3%), kadar abu (0,7-3%) dan kadar lignin terlarut asam (0,7-1,4%). Pengukuran menggunakan GC dan GC-MS, menunjukkan tidak ada beda yang mencolok pada jumlah komponen utama ekstraktif etanol-benzena. Sebaliknya, kayu dengan lingkaran tahun paling lebar secara konsisten memiliki kadar lignin Klason lebih tinggi (32-35%) dibandingkan kayu dengan lingkaran tahun sempit (29-33%). Hasil-hasil tersebut menunjukkan bahwa eksentris lebih berkaitan dengan komponen dinding sel kayu daripada zat-zat metabolism sekunder. Selanjutnya, tidak terlihat juga adanya indikasi terhadap pembentukan kayu tarik.
Kata kunci: Tectona Grandis, kayu eksentris, pohon miring, sifat kimia, riap tumbuh.
Chemical Components of Teak Wood with Eccentric Growth
Abstract
The objective of this study is to learn the quality of abnormal woods. The specimens were 10 leaning trees obtained from thinned teak (Tectona grandis L.f.) stand in Randublatung, Central Java. In each tree, the eccentric growth parts were isolated, then wood meal sample was drilled at the outer heartwood part of both maximum annual-ring width (upper part of leaning stem) and in its opposite side, which had minimum annual-ring width (lower part of leaning stem). The wood meals were ground to size of 40-60 mesh for chemical analysis. Data analysis by paired t-test showed that no significant difference was found between the upper and lower parts in ethanol-benzene extractive content (4-12%), hot-water soluble content (1-3%), ash content (0.73%) and acid soluble lignin content (0.7-1.4 %) . By means of Gas Chromatography (GC) and Gas Chromatography-Mass Spectrometry (GC-MS), no striking difference was also observed in the levels of major components of ethanol-benzene extracts. On the other hand, in Klason lignin content, the wood with widest ring consistently showed a higher content (32-35 %) than that with narrowest ring (29-33 %). These findings indicated that the eccentricity is more related to cell wall components than to secondary metabolites. Further, there is no indication with regard to the formation of tension wood.
Faculty of Forestry, Universitas Gadjah Mada
2011-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/579
Jurnal Ilmu Kehutanan; Vol 5, No 1 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/580
2015-11-19T03:36:33Z
jikfkt:ART
"110101 2011 eng "
2477-3751
0126-4451
dc
Kaindea: Dinamika Pengelolaan Hutan Adat di Pulau Kecil (Studi Kasus: Pulau Wangi-Wangi Kabupaten Wakatobi)
Arafah, Nur
Staf Pengajar Jurusan Kehutanan, Fakultas Pertanian Unhalu, Kendari
Darusman, Dudung
Staf Pengajar Departemen Manajemen Hutan, Fakultas Kehutanan IPB, Bogor
Suharjito, Didik
Staf Pengajar Departemen Manajemen Hutan, Fakultas Kehutanan IPB, Bogor
Sundawati, Leti
Staf Pengajar Departemen Manajemen Hutan, Fakultas Kehutanan IPB, Bogor
Kaindea; comunal forest; small islands; local wisdom
Indonesia adalah Negara Kepulauan yang mempunyai keragaman ekologi dan budaya dalam pengelolaan sumberdaya alam. Termasuk dalam pengelolaan hutan, masyarakat pulau-pulau kecil mempunyai system pengelolaan hutan adat yang terpelihara secara turun-temurun. Penelitian ini bertujuan mengkaji dinamika pengalolaan hutan adat berdasarkan kearifan masyarakat Pulau Wangi-Wangi. Penelitian ini kualitatif dengan metode studi kasus dalam perspektif emik, yaitu pandangan masyarakat Mandati di Pulau Wangi-Wangi terhadap pengelolaan hutan adat. Data dianalisis dengan pendekatan sejarah secara deskriptif. Hasil penelitian menunjukkan bahwa Masyarakat Mandati di Pulau Wangi-Wangi masih mempunyai pengelolaan hutan adat berbasis masyarakat yaitu Kaindea. Kaindea dikelola berdasarkan aturan adat yang berfungsi konservasi, ekonomi dan sosial budaya. Kelestarian pengelolaan hutan adat secara turun-temurun berkaitan dengan eksistensi hubungan antara “Kaindea-Koranga” (hutan-kebun) dengan masyarakat. Disarankan agar transformasi kelembagaan pengelolaan hutan adat sebagai pilihan kebijakan berdasarkan kearifan dan kondisi ekologi local.
Kata kunci: Kaindea, hutan adat, pulau-pulau kecil, kearifan lokal.
Kaindea: Dynamic Management of Indigenous Forest in Small Island (Study Case: Wangi-wangi Island, Wakatoby Regency)
Abstract
Indonesia as the archipelago country has diverse ecological and natural resources. Similarly, the type of forest management and its conditions also vary widely, so it requires an appropriate management system adapted to the local conditions. The objective of this study is to find out local wisdom in the Kaindea management system and ecological, economic and social-cultural fungction on Wangi-Wangi Island. This study is qualitative research with a case study method in emics perspective. Data is then analyzed descriptively by historical approach. The result of the study showed that Mandati community in Wangi- Wangi Island has a unique forest management system based on community. It's called Kaindea. Kaindea management in general is based on the customary roles. The Kaindea has ecological, economics and socio-cultural functions. The sustainability of communal forest management is related to the existence of "Kaindea-Koranga" (forest-garden) relationship. It is suggested that institution transformaion of communal forest management becomes a policy options based on the local wisdom and ecological conditions.
Faculty of Forestry, Universitas Gadjah Mada
2011-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/580
Jurnal Ilmu Kehutanan; Vol 5, No 1 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/581
2015-11-19T03:36:33Z
jikfkt:ART
"110101 2011 eng "
2477-3751
0126-4451
dc
Inventore Biomasa dan Karbon Jenis Jati (Tectona grandis L.f.) di Hutan Rakyat Desa Jatimulyo, Karanganyar
Purwanto, Ris Hadi
Bagian Manajemen Hutan, Fakultas Kehutanan Universitas Gadjah Mada, Yogyakarta
Silaban, Melikaries
Alumni Fakultas Kehutanan Universitas Gadjah Mada, Yogyakarta
Above gound biomas and carbon; teak; community forest; allometric
Hutan menyimpan biomassa dan karbon dalam bentuk pepohonan hidup, bagian organ tumbuhan yang sudah mati yang berada di lantai hutan (misalnya seresah), tanah dan hasil kayu. Kajian ini memaparkan hasil inventore biomassa bagian organ tanaman jati (Tectona grandis L.f.) diatas permukaan tanah (above ground biomass) yang tumbuh di lahan hutan rakyat Desa Jatimulyo, Kabupaten Karanganyar. Diawali dengan penyusunan allometrik, kegiatan inventore dilakukan untuk menaksir potensi biomassa organ tanaman jati di atas permukaan tanah yang tumbuh di lahan hutan rakyat tersebut. Untuk menyusun persamaan allometrik, sebanyak 410 pohon diukur untuk menentukan hubungan antara tinggi pohon (H) dan diameter batang setinggi dada (D). Sepuluh pohon sampel dengan ukuran yang bervariasi ditebang dan berat biomassa masing-masing organ tanaman di atas permukaan tanah (batang, cabang dan daun) diukur. Hasil penyusunan allometrik ini menunjukkan bahwa diameter batang setinggi dada (±1.3 meter diatas permukaan tanah, D) merupakan penduga yang baik untuk tinggi pohon (H) dengan nilai koefisien determinasi r2 diatas 0,8886. Ketika parameter D dikombinasi dengan H, nilai r2 semakin meningkat untuk biomassa batang, cabang dan total biomasa di atas permukaan tanah; menandakan bahwa pola pertumbuhan antar dimensi pohon saling mempengaruhi secara kuat (closely interdependent). Simpanan karbon tegakan jati di hutan rakyat ini diukur dengan asumsi bahwa kadar karbon (C) sebesar 50% dari berat biomasanya. Simpanan biomasa hidup dari organ tanaman jati bagian di atas permukaan tanah yang tumbuh di hutan rakyat Desa Jatimulyo ini selanjutnya diinventore dengan menggunakan beragai persamaan allometrik yang telah disusun. Hasil inventore menunjukkan bahwa total biomasa diatas permukaan tanah untuk tegakan jati yang tumbuh di lahan hutan rakyat Desa Jatimulyo sebesar 27,064 ton/ha, setara dengan simpanan karbon sebesar 13,532 ton/ha, dengan luas bidang dasar sebesar 6,1526 m2/ha. Berdasarkan nilai simpanan karbon dan luas bidang dasarnya, potensi tegakan jati yang tumbuh di hutan rakyat Desa Jatimulyo dikategorikan rendah.
Kata kunci: Biomasa dan karbon diatas permukaan tanah, jati, hutan rakyat, allometrik.
Biomass and Carbon Inventore of Teak (Tectona grandis L.f.) in the Community Forest of Jatimulyo Village, Karanganyar
Abstract
Forests store biomass and carbon in the form of living trees, forest floor detritus (e.g. litter falls), soil and wood products. This study describes inventory results of the above ground biomass of teak (Tectona grandis L.f.) in the community forest of Jatimulyo Village, Karanganyar District. By developing allometric method, the inventory was designed to estimate the potential of above ground biomass of teak in the community forest. To establish the allometric equations, 410 sample trees were measured to determine the relationships between tree height (H) and diameter of breast height (D). Ten trees of various sizes were cut to measure the above ground biomass (stem, branch and leaves). The results showed that diameter at breast height ( about 1.3 m above the ground, D) was a good predictor of tree height (H) with r2 more than 0.8886. When D was combined with H, r2 was improved somewhat for the stem, branch and total above ground biomass, suggesting the growth patterns of tree dimensions were closely interdependent. Carbon storage of the teak forests was based on the assumption that carbon (C) concentration was 50% of the biomass. A standing stock of the above ground biomass of teak in the community forests of Jatimulyo Village was then inventoried based on the allometric relations. Results showed that the above ground biomass of teak in these community forests were 27.064 ton/ha, equal to 13.532 ton carbon/ha, with a basal area of 6.1526 m2/ha. Based on the carbon stock and basal area, the teak community forests of Jatimulyo Village are categorized as having low stand potential.
Faculty of Forestry, Universitas Gadjah Mada
2011-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/581
Jurnal Ilmu Kehutanan; Vol 5, No 1 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/582
2015-11-19T03:36:33Z
jikfkt:ART
"110101 2011 eng "
2477-3751
0126-4451
dc
Konservasi Global, Taman Nasional dan Praktek Lokal di Pulau Siberut, Sumatera Barat
Darmanto, Darmanto
Enviromental Science, UNESCO, Jakarta
Array
Taman Pulau SIberut (Sumatera Barat) dikenal memiliki keanekaragaman hayati tinggi. Dengan luas 403.500 ha, pulau ini mengandung jenis-jenis endemik (terutama primatanya), keunikan ekologi dan dihuni ‘masyarakat adat’ yang diasumsikan memiliki pengetahuan ekologi tradisional. Pendekatan politik ekologi dan metode etnografi digunakan untuk memaparkan sejarah dan praktek konservasi Siberut. Wacana konservasi Siberut sangat dipengaruhi narasi krisis biologi global, penelitian ilmiah dan kebijakan pemerintah. Pemantapan wacana konservasi mewujud dalam pembentukan taman nasional tahun 1993 melalui proyek PKAT dengan dana hutang Bank Pembangunan Asia. Isu konservasi tidak mudah diterapkan dan seringkali tidak sesuai dengan praktek lokal dan pandangan orang Siberut sendiri mengenai bagaimana keanekaragaman hayati seharusnya ditata dan dikelola. Masyarakat siberut memiliki interpretasi, artikulasi dan memproduksi makna konservasi yang berbeda dengan pegawai taman nasional dan actor-aktor lain dari luar. Hubungan antara orang Siberut dengan taman nasional diwarnai ciri negosiatif, mendua dan tidak stabil. Negosiasi makna mengenai bagaimana sumberdaya dikelola dari actor yang berbeda-beda kepentingannya menghasilkan dilemma konservasi.
Kata kunci: Konservasi, politik ekologi, taman nasional, praktek lokal, siberut.
Global Conservation, National Park and Local Practices in Siberut Island, West Sumatera
Abstract
Siberut Island (West Sumatra) has high profile for conservation. This island of 403,500 ha has endemic species, ecological uniqueness and indigenous peoples assumed to have traditional ecological knowledge. Using ecological politics, this article will describe history of biodiversity conservation in Siberut. Discourse of Siberut conservation influenced by biological crisis narrative in the global context, scientific research and government policy. Conservation discourse was institutionalized during national parkestablishment in 1993 together with PKAT project and foreign debt from Asian Development Bank Nevertheless, conservation issue is not easy to implement in the local context and coherent with local practice. Indigenous people of Siberut interpret, articulate and produce meaning for conservation differently with other actors. The relationship between indigenous peoples and conservation issue has been characterized with negotiable features, ambiguity and instability. Meaning negotiation on how resources should be managed by actors with different interests resulted in dilemma of conservation.
Faculty of Forestry, Universitas Gadjah Mada
2011-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/582
Jurnal Ilmu Kehutanan; Vol 5, No 1 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/821
2015-11-19T03:32:03Z
jikfkt:ART
"080701 2008 eng "
2477-3751
0126-4451
dc
Pengaruh Gibberellin (GA4) terhadap Waktu Perkecambahan dan Pertumbuhan Tinggi Semai Cendana (Santalum Album Linn.)
Putri, Asri Insiana
Balai Besar Penelitian Bioteknologi dan Pemuliaan Tanaman Hutan Yogyakarta
Herawan, Toni
Balai Besar Penelitian Bioteknologi dan Pemuliaan Tanaman Hutan Yogyakarta
Santalum album Linn.; Gibberellins (GA4); germination; height growth
Effect of Gibberellins (GA4) on Germination Time and Height of Cendana (Santalum album Linn.)
The hemiparasite Santalum album Linn. (cendana) grows very slow, in nature the rare and difficult seeds need stimulation to germinate. Gibberellins (including GA4) are growth regulators, usually used to increase growth as well as to break seed dormancy. The objectives of this research were to investigate the influence of gibberellins on germination percentage and height of cendana growth. Experiment was laid out in a Completely Randomized Design with 3 replicates of 300 seeds for germination percentage and 3 replicates of 10 seeds for seedling growth. Gibberellin was applied as treatment with 100, 300, and 500 ppm. The seed germination was recorded until 9 weeks, and height of plants measured until 8 months at the greenhouse. The results showed that the addition of gibberellins at all treatment increased the percentage of germination and caused the seeds germinated four weeks earlier than the control. In the first 4 months, 500 ppm gibberellins gave the highest acceleration of germination, afterward all treatments have relatively the same influences. Gibberellins gave positive effect on height of cendana growth. After 7 months, the growth decreased although all gibberellin treatments gave higher growth than the control.
Faculty of Forestry, Universitas Gadjah Mada
2008-07-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/821
Jurnal Ilmu Kehutanan; Vol 2, No 2 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/822
2015-11-19T03:32:03Z
jikfkt:ART
"080701 2008 eng "
2477-3751
0126-4451
dc
Participatory Indicators of Success of Community Forestry Programs in Uganda
Mukadasi, Buyinza
Department of Community Forestry and Extension, Makerere University
community forestry; indicators; women participation; Uganda
In Uganda, a large diversity of community initiated forest management systems have evolved recently in response to severe degradation of forests and grazing land and biomass shortages. Forestry professional, forest user group and farmers were organized in June 2004 to develop commonly agreed indicators of the performance of Community Forestry Program in Uganda. Indicators, such as access to fuel wood, incidence of forest fire and amount of community funds raised through the sale offorest products are commonly agreed at local level. Women participation in forestry related meetings and taste of drinking water in the watershed area are also important. Equitable benefit sharing by the community forest users serves as an indicator of better access to forest products. Socio-economic changes such as women participation in forest related decision-making, income generated from community forests, and equity of benefits from community forests also, reflect the program success.
Faculty of Forestry, Universitas Gadjah Mada
2008-07-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/822
Jurnal Ilmu Kehutanan; Vol 2, No 2 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/830
2015-11-19T03:32:03Z
jikfkt:ART
"080701 2008 eng "
2477-3751
0126-4451
dc
Evaluasi Pertumbuhan Semai Beberapa Provenan Sungkai (Peronema Canescens Jack) di Kalimantan Selatan
Hatta, Gusti Muhammad
Program Studi Budidaya Hutan, Fakultas Kehutanan, Universitas Lambung Mangkurat
provenance; sungkai (Peronema canescensJack); nursery stage
Growth Evaluation of Several Provenances of Sungkai (Peronema Canescens Jack) Seedlings in South Kalimantan
Sungkai (Peronema canescens Jack) is among the species recommended for industrial forest plantation (IFP) by the Ministry of Forestry. Despite this fact, very little is known about the extent of genetic variation in wild populations and few attempts, if any, have been made at genetic improvement. Sungkai cuttings are collected wherever available, rather than companies seeking high-quality stockplants. No effort has been made to increase the quality of cuttings by collecting them from different geographical origins (provenance test). Cuttings from five provenances in South Kalimantan were tested at nursery stage in order to indent6 the best provenance. The result showed that all provenance had a 100% survival rate. Kandangan provenance was the fastest in finishing shoots formation. There is no significant difference in term of shoot length however, in average, provenances from Tambarangan and Tanjung had longer shoots, i.e. 31 cm and 30.65 cm, respectively.
Faculty of Forestry, Universitas Gadjah Mada
2008-07-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/830
Jurnal Ilmu Kehutanan; Vol 2, No 2 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/834
2015-11-19T03:32:03Z
jikfkt:ART
"080701 2008 eng "
2477-3751
0126-4451
dc
Model Tajuk Jati (Tectona Grandis L.f) dari Berbagai Famili pada Uji Keturunan Umur 9 Tahun
Raharjo, Jany T.
Alumni Jurusan Manajemen Hutan, Fakultas Kehutanan Universitas Gadjah mada
Sadono, Ronggo
Jurusan Manajemen Hutan, Fakultas Kehutanan Universitas Gadjah mada
teak (Tectona grandis); crown model; family
Crown Model on Several Family of 9 years old of Teak (Tectona grandis L.f) Progeny Trial
Crown plays an important role in regulating the rate of tree growth through the photosynthesis process. Furthermore it can be used to measure stand density and to determine the availability of growing space. Because of the difficulty and time consuming in direct crown measurement, the development of crown model is needed. The objectives of this study were to develop crown models of teak (Tectona grandis) of 9 years old from selected open pollinated families and to identifi) the variations of crown models among them.
The study was conducted in an open pollinated progeny test located at the compartment 49a, RPH Sidowayah, BKPH Kedunggalar, KPH Ngawi. The experimental unit was family. Five families with the best average of stem diameter at breast height were selected as samples. Crown models were developed and variations of crown model were tested with analysis of variance.
The crown model of teak can be divided into two sections. The upper crown representing the light crown section followed parabolic model while the under crown representing the shaded crown section followed linear model. No differences in crown model were found among families. The proposed models are:
light crown section, paraboloid : Rl =1.91 * hl0.33
shaded crown section, linear .. Rs = -0.75 + 0.57 hs
where Rl is light crown radius (m), hl is the height of light crown section (m), Rs is shaded crown radius (m) and hs is the height of shaded crown section (m)
Faculty of Forestry, Universitas Gadjah Mada
2008-07-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/834
Jurnal Ilmu Kehutanan; Vol 2, No 2 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/835
2015-11-19T03:32:03Z
jikfkt:ART
"080701 2008 eng "
2477-3751
0126-4451
dc
Nilai Penting Agroforestri, Hutan Rakyat dan Lahan Pertanian dalam Konservasi Keanekaragaman Jenis Burung di Paliyan, Gunung Kidul, Yogyakarta
Pudyatmoko, Satyawan
Jurusan Konservasi Sumberdaya Hutan, Fakultas Kehutanan Universitas Gadjah Mada
bird; conservation; value; landscape; Paliyan
Important Values of Agroforestry, Community Forest, and Agricultural Land on Conservation of Bird Diversity in Paliyan, Gunungkidul, Yogyakarta
Agroforestry is recognized as a land use management that capable to integrate the need of local peoples and the concern of biodiversity conservation. However, some contradictory results of studies made the importance of agroforestry on conservation of biodiversity questionable. To understand the role of agroforestry in biodiversity conservation, bird community assemblages of three land use types namely private forests, agroforestry and annual crops were compared. Single belt point count with a radius of 50 m was used to survey birds. In general species diversity in the study area was at a moderate level. Statistically, bird communities between sites did not differ significantly in term of their abundance, species composition, and diversity. It was because patch context plays more important role than patch content. However, it was found that in all community parameter agroforestry area has higher values than those of crops. Consistent with the previous studies, insectivorous birds were the most sensitive to land use changes. The conservation value of Paliyan area was relatively low, because most of species were abundant, and no species inhabit endangered status according to IUCN criteria. Implication of this research was that Paliyan area need a large-compact habitat to conserve high bird diversity.
Faculty of Forestry, Universitas Gadjah Mada
2008-07-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/835
Jurnal Ilmu Kehutanan; Vol 2, No 2 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/836
2015-11-19T03:32:03Z
jikfkt:ART
"080701 2008 eng "
2477-3751
0126-4451
dc
Sertifikasi Phenyl: Persepsi Masyarakat dan Dampak Sertifikasi pada Pengusahaan Hutan Skala Lokal (Studi Kasus di Kelurahan Selopuro dan Desa Sumberejo, Kecamatan Batuwarno, Kabupaten Wonogiri, Propinsi Jawa Tengah)
Yuwono, Teguh
Jurusan Manajemen Hutan Fakultas Kehutanan Universitas Gadjah Mada
certification; PHBML; perception; impact
Phenyl Certification: Public Perception and Impacts of Certification of the Local Scale Forest Management (Study Case in Selopuro and Sumberejo Villages, Batuwarno Sub District, Wonogiri Regency, Central Java)
In 2002, Indonesian Ecolabel Institution (LEI) established the so-called Sustainable Community Based Forest Management Certification system (PHBML). In 2004, with a PHBML certificate award, the community forest management units in Selopuro and Sumberejo villages, Batuwarno sub district, Wonogiri Regency, Central Java were anknowledged as the best institution in sustainable yield function, social function, and ecological function aspects. This research was aimed to find out the community's kind of perception, as well as that of KPS (Certification Farmer Community) officials and members in particular, to PHBML certification implementation. Also, the study was intended to discover the impact of PHBML certification upon the local scale forest management.
The research findings indicated that the community's level of understanding to PHBML certification was poor when compared with that of KPS officials. This condition due to the official failure to share the knowledge they had receivedfrom NGO with the KPS members. With PHBML certification, the institutional management by forest farmers had been proven improved however, there have not been yet any significant improvement to farmer income, and to forest product marketing. In addition to this, what was meant by significance, did not fully answer the farmer expectation of better sustainable forest principle realization.
Faculty of Forestry, Universitas Gadjah Mada
2008-07-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/836
Jurnal Ilmu Kehutanan; Vol 2, No 2 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/924
2015-11-19T03:33:08Z
jikfkt:ART
"090101 2009 eng "
2477-3751
0126-4451
dc
Good Forest Governance: Sebuah Keniscayaan dalam Pengelolaan Sumberdaya Hutan Lestari
Siswoko, Bowo Dwi
Jurusan Manajemen Hutan Fakultas Kehutanan Universitas Gadjah Mada
forest resources management; good forest governance; centralistic government; public participation
Good Forest Governance: A Necessity in Sustainable Forest Resource Management
Forest resources development is one of natural resource management sectors implemented centrally during the period of New Order (Orde Baru). Forest resource management was executed exploitatively and centrally without considering local and regional aspirations, causing abandonment of local communities. Communities living near and in the forest were neglected and did not have any access to gain forest benefits appropriately. This has caused conflicts between state and communities upon forest resources utilization that to some extent has initiated forest resource degradation.
Since the political reformation in 1998, along with more democratic and stronger civil society in Indonesia, good forest governance concept was believed as a strategy that is able to accommodate the dynamic and answer various problems in forest resource management. In this concept, state has to acknowledge its inadequacy in forest resource management. Government should share roles and authorities to other stakeholders in proportion to each capability. Government was forced to be able to accommodate and provide participatory space to the communities in every step of forest management activities. Additionally, ecological aspect has also to be the primary consideration in this strategy. By applying good forest governance concept that is always based on social and ecological aspects, it is expected that forest resource sustainability and community welfare improvement could be realized.
Faculty of Forestry, Universitas Gadjah Mada
2009-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/924
Jurnal Ilmu Kehutanan; Vol 3, No 1 (2009)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/925
2015-11-19T03:33:08Z
jikfkt:ART
"090101 2009 eng "
2477-3751
0126-4451
dc
Pemanfaatan Serbuk Kayu untuk Produksi Etanol dengan Perlakuan Pendahuluan Delignifikasi Menggunakan Jamur Phanerochaete Chrysosporium
Irawati, Denny
Jurusan Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada
Azwar, Norman Razief
Departemen Biokimia, Fakultas MIPA IPB
Syafii, Wasrin
Departemen Hasil Hutan, Fakultas Kehutanan IPB
Artika, I Made
Departemen Hasil Hutan, Fakultas Kehutanan IPB
sawdust; white rot fungi Phanerochaete chrysosporium; ethanol
Utilization of Sawdust to Produce Ethanol Using Delignification Pre-treatment with White Rot Fungi Phanerochaete chrysosporium
Currently, Indonesia is in the middle ofpetroleum crisis. One ofthe alternative fuels which can be used as a petroleum substitute is ethanol. Ethanol can be produced from timber waste (sawdust). Indonesia in 2003 had timber waste potency of about 3-4 millions m3. However, ethanol production from sawdust has problems due to its lignin content. Therefore, research on bio-delignification treatment of sawdust prior to ethanol making process is required. In the present study ethanol was produced by simultaneous saccharification and fermentation (SSF) using crude cellulose from Trichoderma viride and Saccharomyces cerevisiae. The raw materials for ethanol production are sengon (Paraserianthes falcataria (L.) Nielsen syn.), meranti (Shorea sp.) and teak (Tectona grandis LIIVN.f.) sawdust after pretreatment with white rot fungi Phanerochaete chrysosporium for 10, 20 and 30 days incubation time. The yield of ethanol was between 1.65-44.83 g/1. The best combination treatment is sengon sawdust with 30 day incubation time.
Faculty of Forestry, Universitas Gadjah Mada
2009-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/925
Jurnal Ilmu Kehutanan; Vol 3, No 1 (2009)
eng
Copyright (c)
oai:jurnal.ugm.ac.id:article/926
2015-11-19T03:33:08Z
jikfkt:ART
"090101 2009 eng "
2477-3751
0126-4451
dc
Tunas Air: Variasi Kemunculan dan Pengaruhnya terhadap Pertumbuhan Tanaman Jati (Tectona grandis)
Faridah, Eny
Jurusan Budidaya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Indrioko, Sapto
Jurusan Budidaya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Tuharno, Tuharno
Alumni Fakultas Kehutanan Universitas Gadjah Mada
Array
Epicormics Root: Emerge Variation and Its Effect on Teak (Tectona grandis) Seedling growth
Epicormic shoot is an adventitious shoot appearing from the dormant buds. The formation of the shoots is influenced by environmental conditions such as drought, excessive crown opening (by thinning) or by shoot death, but genetic factor also plays a role. Epicormic shoot is assumed to negatively affects plant growth. The study aims to identin) family variation in tendency to form epicormic shoots and to examine the effect of epicormic shoots on seedling growth of teak
The study was conducted in 2006 on teak plantation in compartments 37b, 38c, and 38d, RPH Mangkang, BKPH Mangkang, KPH Kendal. Plant materials used were 6-month teak plantation named as prospective teak plantation (Jati Prospektip. The research was done in Randomized Completely Block Design using 28 seedlots/families (clone number 1 to 28), 3 treeplots, and 3 blocks as replication; and 2 silvicultural treatments i.e. with epicormic shoots and without epicormic shoots (shoots being cut).
Results showed that seedlots with the highest tendency to form epicormic shoots were number 5, 18, and 25, while those with the lowest tendency were 6, 10 and 12. The existence of epicormic shoots negatively affected plant growth both on height and stem diameter. In two months, height and stem diameter growth of plants without epicormic shoots were 81.0 cm and 1.29 cm respectively, while those with epicormic shoots were only 69.1 cm and 1.13 cm respectively. Two families showing the highest growth performance were families 14 (with height and diameter growth of 95.6 cm and 1.50 cm) and 22 (94.2 cm and 1.47 cm).
Faculty of Forestry, Universitas Gadjah Mada
2009-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/926
Jurnal Ilmu Kehutanan; Vol 3, No 1 (2009)
eng
Copyright (c) 2009 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/927
2015-11-19T03:33:08Z
jikfkt:ART
"090101 2009 eng "
2477-3751
0126-4451
dc
Model Lengkung Bentuk Batang (Taper Curve) Pohon Jati (Tectona Grandis)
Sadono, Ronggo
Jurusan Manajemen Hutan Fakultas Kehutanan Universitas Gadjah Mada
Trisnomo, Muhammad Dimas
Alumni Hutan Fakultas Kehutanan Universitas Gadjah Mada
Askar, Askar
Alumni Hutan Fakultas Kehutanan Universitas Gadjah Mada
Array
Model of Taper Curve of Teak Stem (Tectona grandis)
Detailed information on tree volume for fancy wood, such as teak, is important to estimate its financial value. Therefore, a method of estimating stem volume in portion wise is developed. The objective of this study was to apply a parabolic taper curve in various tree strata. Data of stem diameter at any relative height were collected from selected felled-tree samples according to stem quality both in the state and community forests by section wise measurement. Regression analysis was applied to estimate parameter and to test the suitability level of the parabolic taper model. The results showed that parabolic taper model could be used to describe the stem curve of clear bole stem in state forest and the stem curve up to tree height with minimum diameter of ca. 10 cm. In the state forest, the parabolic taper model was fit to medium and large diameter classes or in the intermediate and dominant strata. For small diameter class or in suppressed stratum, the model was not sufficiently fit. On the other hand, the parabolic taper model was fit to all samples from community forests because the samples comprised the stem of best quality from the stand. The parabolic taper model was suitable to apply on high quality stems which were characterized with healthy, cylindrical, and straight stem, high clear bole, and straight grain.
Faculty of Forestry, Universitas Gadjah Mada
2009-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/927
Jurnal Ilmu Kehutanan; Vol 3, No 1 (2009)
eng
Copyright (c) 2009 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/928
2015-11-19T03:33:08Z
jikfkt:ART
"090101 2009 eng "
2477-3751
0126-4451
dc
Kelimpahan dan Keanekaragam Tanaman Pakan Rusa Bawean di Kawasan Suaka Margasatwa Pulau Bawean, Jawa Timur
Subeno, Subeno
Jurusan Konservasi Sumberdaya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Array
Abundance and Diversity of Bawean Deer Foods in Bawean Wildlife Sanctuary,Bawean Island,East Java
Bawean deer (Axis kuhlii) is an endemic species to Bawean. Habitat change and loss, land conversion, and over exploitation affect the availability of potential food forBawean deer. The aims of this research were to identifi types ofpotential food for Bawean deer in Bawean Wildlife Sanctuary, the abundance ofpotential foods in Bawean Wildlife Sanctuary and the diversity of such potential foods. Data collected using line transects whose length was adjusted according to field condition. The line transects were located in parallel to natural trail of study area. Observation was done in the plots established along transect, where plant being eaten by Bawean deer was found. Plot has a circular form with diameter of 3.14 m. Distance between plots was determined to be 100 m. Indicators used to collect data were feces, footprint and bite or chew mark on food plants. Identification ofplant species was conducted directly for every plant which showed bite or chew mark Data concerning type ofplant and its number, part of plants which was bitten or chewed and plant height were recorded. Abundance will be determined from the number of potential foods in each location. The results were afterwards compared among three forest regions. The diversity of food plant species was determined using Shannon index. The result showed that there are 29 plants considered as potential food for Bawean deer. Most of the plants are grasses, and herbs, while woody plants are found in a small number. Leaves, shoots (buds) and fruits are part of plant often being eaten. There are 14 food plants occurred in Gunung Mas forest region, 27 food plants were found in Gunung Besar forest region and 13 food plants in Tanjung Cina Island. Taliata, rumput padang and gadung have high abundance in Gunung Mas forest region, the smallest abundance was occupied by kayu flat. Kabek-kabekan putih, lading-ladingan and taliata showed the highest abundance in Gunung Besar forest region, while karangsang has the lowest abundance. In Tanjung Cina Island, high abundance was dominated by gadung, taliowar and lading-ladingan. On the other hand, talicacing, kayu tekek and rombok putih showed low abundance. Among three study areas, Gunung Besar forest region has the highest diversity index, followed by Gunung Mas forest region and then Tanjung Cina Island.
Faculty of Forestry, Universitas Gadjah Mada
2009-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/928
Jurnal Ilmu Kehutanan; Vol 3, No 1 (2009)
eng
Copyright (c) 2009 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/929
2015-11-19T03:33:08Z
jikfkt:ART
"090101 2009 eng "
2477-3751
0126-4451
dc
Pengaruh Metode Pengeringan dan Jenis Sortimen Kayu Suren terhadap Kecepatan dan Cacat Pengeringan
Suranto, Yustinus
Jurusan Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada
Mugiyana, Mugiyana
Alumni Fakultas Kehutanan Universitas Gadjah Mada
Array
Effect of Drying Method and Lumber Dimension on Drying Rate and Defects of Suren Wood
Efforts to improve productivity of wood industry must be supported by increasing supply of wood as raw materials. The limited wood supply due to natural forest degradation can be increased by wood harvested from plantation forests, including wood of suren (Toona sureni Merr) as one species composing the forests. In timber processing wood drying is an important aspect determining product quality. This study aimed to identify the effect of drying method and sortimen dimension on drying character of suren wood.
Trunks of 3 suren trees of seven to nine years old were cut from Manggihan village, Getasan district, Semarang regency. The bolts were sawn (using blambangan method) to obtain sortimen papan wood of 3 cm (thickness), 8 cm (width), and 210 cm (length) and sortiment usuk wood of 4 cm, 6 cm and 210 cm. Beside two levels of sortimen size, two levels of drying method, e.g. natural and solar drying were also used in this research. Resulted data were analyzed with factorial complete randomized design. Measured parameters consisted of drying rate, dimension shrinkage and some drying defects e.g. bowing, cupping, end check, surface check and fungi infection.
Research results showed that drying methods significantly affect drying rate, but not other parameters. Also, product dimension affects significantly to drying rate, but not other parameters. Interactions between the two factors did not give any significant effect on all parameter. To produce the same drying level on the same product size, solar drying method is faster than natural one. To reach dry wood with 14% moisture content in solar drying method, sortimen papan and usuk needs 23 and 26.8 drying days respectively, while in natural drying method, the same product size needs 44.6 and 48.50 days of drying respectively.
Faculty of Forestry, Universitas Gadjah Mada
2009-01-01 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/929
Jurnal Ilmu Kehutanan; Vol 3, No 1 (2009)
eng
Copyright (c) 2009 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1045
2016-08-30T07:58:02Z
jikfkt:ART
"090701 2009 eng "
2477-3751
0126-4451
dc
Pengukuran Kadar Ekstraktif dan Sifat Warna pada Kayu Teras Jati Doreng (Tectona grandis)
Lukmandaru, Ganis
Jurusan Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada
Tectona grandis; black streak; doreng; extractives; color properties
Measurement of Extractive Content and Color properties on Black-streaked Heartwood of Teak (Tectona grandis)
Teak (Tectona grandis L.f) in certain areas of Java usually has black streaked heartwood or has been known as "doreng". In general, the color of wood is related to the kinds and amounts of extractives, therefore, black streak that appeared on the heartwood was studied by means of color measurements and the determination of extractive content. The study was made with 13 trees of black streaked heartwood and 5 trees of normal heartwood. The wood powder (40-60 mesh) was extracted successively with ethanol-benzene (1:2, v/v) for 8 h and hot water for 3 h. The used system of color measurements was CIEL*a*b* which represents brightness, redness and yellowness. The discolored wood was contained substantially more ethanol-benzene soluble extractive content (12 - 22%) than did the normal heartwood (7 - 11%). The yield differences of hot-water soluble extracts were not as pronounced. Beside the brightness (L*), the differences in redness (a*) and yellowness (b*) between the normal (L* = 51-61, a* = 4 to 7, b* = 24 to 28) and black streaked heartwood (L* = 42-51, a* = 6 to 9, b* = 20 to 25) before the extraction, were notable. The total color differences ( E*) before and after extractions, however, were not significantly differed between the discolored ( E* = 6 to 13) and normal heartwood ( E* = 5 to 11) parts. Correlation analysis revealed strong correlations between ethanol-benzene soluble extractive content with L* (r = -0.97) and b* (r = -0.94). The hot-water soluble extract was moderately correlated with a* (r = 0.54) and the difference in redness ( a*) before and after extractions (r = 0.75).
Faculty of Forestry, Universitas Gadjah Mada
2009-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1045
Jurnal Ilmu Kehutanan; Vol 3, No 2 (2009)
eng
Copyright (c) 2009 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1046
2016-08-30T07:58:18Z
jikfkt:ART
"090701 2009 eng "
2477-3751
0126-4451
dc
Evaluasi Pertumbuhan Uji Provenans Eucalyptus urophylla S.T. Blake Umur 20 Tahun di Lad Krating, Chachoengsao, Thailand)
Hendraswari, Indi
Mae Fah Luang University
Bhumibhamon, Suree
Mae Fah Luang University
Eucalyptus urophylla; provenance trial; growth characteristics
Evaluation of Provenance Trial of Eucalyptus urophylla S.T. Blake Growth Age 20-Year-old in Lad Krating , Chachoengsao Province, Thailand
Growth characteristics of a wide range of provenance trial of Eucalyptus urophylla established at Lad Krating Plantation, Chachoengsao Province were assessed at 20 years of age. The trial was established to ascertain the extent of variation within the species, identify promising sources for the immediate seed supply and provide information on superior sources for selection. The trial consisted of 18 provenances representing six islands in Indonesia, viz. Flores, Lomblen, Pantar, Alor, Wetar, and Timor. Results from the present study indicated that there were significant differences in survival, tree height, clear bole, diameter at 10 cm above ground level (D10), and diameter at breast height (Dbh) among provenances. Meanwhile, the difference in crown diameter among provenances was insignificant. The present results recommended 6 provenances, viz. Mt. Lewotobi (Flores), Mt. Wasbilla (Pantar), Mt. Kerbau (Lomblen), Mt. Lewerok (Flores), Ampui (Alor), and Mt. Lakaan (Timor) as the best performing provenances for the next selection process and the most promising seed sources to be used in increasing the plantation productivity at Lad Krating.
Faculty of Forestry, Universitas Gadjah Mada
2009-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1046
Jurnal Ilmu Kehutanan; Vol 3, No 2 (2009)
eng
Copyright (c) 2009 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1510
2016-08-30T07:58:36Z
jikfkt:ART
"090702 2009 eng "
2477-3751
0126-4451
dc
Potensi Kayu Perkakas dan Kayu Bakar Jenis Jati (Tectona grandis) di Hutan Rakyat Desa Natah, Gunung Kidul
Purwanto, Ris Hadi
Jurusan Manajemen Hutan Fakultas Kehutanan Universitas Gadjah Mada
Kurniasari, Dian Asih
Alumni Fakultas Kehutanan Universitas Gadjah Mada
merchantable timber; firewood; teak (Tectona grandis); community forest - allometric method
Potentials of Merchantable Timber and Firewod of Teak (Tectona grandis) in Natah Village Community Forest , Gunungkidul
The potential of merchantable timber and firewod of teak (Tectona grandis) in Desa Natah community forest was estimated by developing allometric equations method. To establish the allometric equation 350 sample trees were measured to determine the relationships between tree height (H) and diameter breast height (D). Thirty trees of various sizes were cut to measure the merchantable timber and firewood volume. The raw merchantable timber volume of teak in the community forest was defined as the ligneous material contained in the bole and branches which both with a diameter of at least 10cm. The result showed that D (taken at about 1.3m above the ground) was a good predictor of H with r2 over 0.9672. When D was combined with H, r2 was improved somewhat for the merchantable timber volume, suggesting the growth patterns of tree dimensions were colesy interdependent. A standing stock of the merchantable timber and firewood volume of teak in the community forest was then estimated based on the allometric relations. Proportions of the merchantable timber and firewood volume were 66.91% and 33.09% of total wood volume per tree, respectively. The potential of merchantable timber and firewood volume in these community forest were 13.501 m3/ha and 8.686 m3/ha, respectively, with a basal area of 1.887 m2/ha. Based on the basal area, Desa Natah community forests of teak could be classified into extremely sparse of stands category.
Faculty of Forestry, Universitas Gadjah Mada
2009-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1510
Jurnal Ilmu Kehutanan; Vol 3, No 2 (2009)
eng
Copyright (c) 2009 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1511
2017-07-09T07:27:54Z
jikfkt:ART
"090702 2009 eng "
2477-3751
0126-4451
dc
Arahan Penggunaan Lahan untuk Pengendalian Erosi Tanah di Sub-DAS Wuryantoro DTA Waduk Gajah Mungkur Wonogiri Jawa Tengah
Senawi, Senawi
Jurusan Manajemen Hutan Fakultas Kehutanan Universitas Gadjah Mada
Array
Recommendation of Land Use Allocation to Control Soil Erosion in Wuryantoro Sub-Watershed DTA Gajah Mungkur Reservoir, Wonogiri, Central Java
The research aims to recommend optimum land use allocation that can control soil surface erosion in Wuryantoro sub-watershed. The research was done using land evaluation aproach to land unit and analyzed based on area function allocation, land capability classification, and erosion hazard rate. Optimization analysis on land use allocation was done statistically through linear program symplex method using QSB software.
The results showed that actual land use caused actual soil surface erosion (A) of Wuryantoro subwatershed was higher that tolerable erosion (T) treshold. Optimization analysis recommends that to control actual soil surface erosion (A) to be lower that tolerable erosion (T) treshold, its is needed to convert all actual land uses of groves and croplands to forest. Actual land uses of production forests, community forests, irrigated farmlands, rainfeed farmlands, and residential could still be kept remain as they were.
Faculty of Forestry, Universitas Gadjah Mada
2009-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1511
Jurnal Ilmu Kehutanan; Vol 3, No 2 (2009)
eng
Copyright (c) 2009 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1512
2016-08-30T07:59:12Z
jikfkt:ART
"090702 2009 eng "
2477-3751
0126-4451
dc
Penyusunan Skedul Suhu dan Kelembaban Awal untuk Pengeringan di Dalam Tanur Pengering Konvensional bagi Kayu Durian Bersortimen 55 X 195 mm
Suranto, Yustinus
Jurusan Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada
drying schedule prediction; 55 x 195 mm sortiment; durian lumber; Terazawa method
Schedule Development of Initial Temperature and Relative Humidity for Conventional Drying of Durian Wood in Dimension of 55 mm thick and 195 mm wide
Decreasing supply of most commercial depterocarp wood as raw material inspirates wood working industry producing building construction component to look for uncommercial wood to be utilized. Proper utilization of these woods must be based on wood properties consisting of wood basic and processing properties. Drying property is one of the most important wood processing property. Proper drying process will be the main key to utilize effectively and ensure to get high quality wood product.
Durian (Durio spp) is one of uncommercial wood grown naturally in Sulawesi island forest. This wood is used by wood industr to produce building component to be exported. There is no yet drying schedule formulation of this wood lumber in dimension of 55mm thick and 195 mm wide. The objective of this research was to develop drying schedule for durian wood in that dimension. Drying schedule was developed by the result of quick drying test. The formulation of drying schedule was elaborated based on Terazawa method.
The research result showed that initial moisture content and specific gravity of this wood was 103.4% and 0.4 respectively. Theoretically, the first drying schedule was 54oC as an initial remperature and 80oC as a final temperature. Web bulb depression for the initial step of drying was 4oC and for the end step was 30oC. The range of relative himidity were 80% to 17%. These drying schedule was coded by T5F6.
Faculty of Forestry, Universitas Gadjah Mada
2009-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1512
Jurnal Ilmu Kehutanan; Vol 3, No 2 (2009)
eng
Copyright (c) 2009 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1513
2016-08-30T07:59:28Z
jikfkt:ART
"090702 2009 eng "
2477-3751
0126-4451
dc
A Review of Relationships Between Wood Quality and Silvicultural Practices
Listyanto, Tomy
Faculty of Forestry, Universitas Gadjah Mada
Nichols, John Doland
Southern Cross University, Lismore
wood quality; silviculture; forest management
The effect of silviculture on wood quality has been approached from different perspectives. This relationship is being a critical concern of forest managers, landowners, and also researchers. Reliable information is needed to support forest managers in predicting the consequences of various silvicultural practices in terms of quantity and wood quality.
Wood has beed used for a variety of products. Each product has particular requirements regarding quality. The variation of wood quality requirement allows industries to decide to use timber resource appropriate for their products. Silvicultural practives cover all treatments applied in forest stand management especially to improve the quality of stand, including manipulation of the availability of sunlight, nutrient and water by using several treatments such as thinning, control of spacing, fertilizing, and pruning. The quality of stand is aimed to achieve particular forest management objectives including higher wood quality.
There is no broad generalization regarding the relation between silvicultural practice and wood quality. Many investigators showed positive results in relation to producing high quality of wood products, while other researchers revealed negative effects. Reliable information is needed to support forest managers in predicting the consequences of various silvicultural practices in relation to the wood quantity and quality. Continuous research is needed to find methods of producing wood of high quality based on silvicultural practices and genetic improvement which can be used in wider area by considering limitation including environment and geographic variation.
Faculty of Forestry, Universitas Gadjah Mada
2009-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1513
Jurnal Ilmu Kehutanan; Vol 3, No 2 (2009)
eng
Copyright (c) 2009 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1531
2015-11-19T03:31:15Z
jikfkt:ART
"080111 2008 eng "
2477-3751
0126-4451
dc
Pengaruh Generalisasi Unit Lahan pada besarnya Erosi (Studi kasus di DAS Air Nelas, Propinsi Bengkulu)
Sulistyo, Bambang
Jurusan Budidaya Pertanian, Fakultas Pertanian, Universitas Bengkulu
generalisation; land unit; erosion
Effect of Land Unit Generalization on the ErosionLevel (Study Case in Air Nelas Watershed, Bengkulu Province)
The research aims to identify the effect of land unit generalisasion on the erosion at the Air Nelas catchment area in Bengkulu Province. Land unit generalisation is one step to be done in arrangin RTL-RLKT (Rencana Teknik Lapangan-Rehabilitasi Lahan dan Konservasi Tanah; Field Planning for Soil Rehabilitation and Conservation) conducted by Balai Pengelola DAS (formerly Balai RLKT).
Method applied by conducting digital analysis using GIS Program to calculate erosion of the catchment area with USLE (Universal Soil Loss Equation) formula. Comparison analysis was done between the result of erosion before and after land unit generalisation. Land unit generalisation is a process to eliminate land unit having area 1 cm2 on map or 25 hectares on the field at the scale of 1:50.000. The instruction to run generalisation in ArchInfo GIS program is ELIMINATE. Land unit generalisation is done to simplify map analysis manual by avoiding land unit which is very small in the area.
The research result showed that for the whole Air Nelas catchment area the erosion rate was 601,279.49 ton/ha/year before generalisation and 267,907.54 ton/ha/year after generalisation, indicating that there was a 33,371.95 ton/ha/year difference or 55.44% as the effect of land unit generalisation process. When the observation was mainly at the area of rehabilitation and conservation, there were categorical changes of the erosion i.e. from Moderate to Heavy or Very Heavy and vice versa. The change was varying between 148,244.82 ton/ha/year (Moderate to Very Heavy) and 79,470.62 ton/ha/year (Very Heavy to Moderate). Overall, the erosion was increaasing aas 65,335.90 ton/ha/year (11,01%) for the whole category in area where rehabilitatin and conservation have to be conducted. Those changes would affect the plan which determine recommendations to be taken in rehabilitation and conservation of catchment areas, as well as change in the project location and budget.
Faculty of Forestry, Universitas Gadjah Mada
2008-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1531
Jurnal Ilmu Kehutanan; Vol 2, No 1 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1532
2015-11-19T03:31:15Z
jikfkt:ART
"080111 2008 eng "
2477-3751
0126-4451
dc
Perencanaan Jangka Pendek DAS dengan Metode Perhitungan Erosi Kuantitatif dengan Penginderaan Jauh dan Sistem Informasi Geografis
Harjadi, Beny
Balai Penelitian Kehutanan, Solo
Land damage; quantitative erosion; MMF; watershed prioritization; RS & GIS
Short-term Planning of Watershed Using Calculation of Quantitative Erosion Method Based on Remote Sensing and Geographic Information System
Priority determination of some sub watersheds experienced difficulties based on the fact that data collection of the related sub watersheds takes time and quite costly. Whereas to comprehensively manage sub watershed, some prioritizet sub watersheds have to be chosen to manage holistically and integrally with good coordination between some related agencies. The study was carried out in India in two Nawagaon Maskara Raoi watersheds, Saharanpur city, located 250 km to the east of New Delhi. The study appointed a sub watershed to be the prioritu among the other 10 available using quantitative calculation method (MMF: Morgan, Morgan, and Finney method). The research aimed to measure the quantitative erosion based on MMF model and calculate the value index to determine the priority in sub watershed.
The erosion calculation by MMF model produced five erosion levels i.e. very low (vl=0-5t/ha/yr), low (l=5-10 t/ha/yr), medium (m=10-25 t/ha/yr), high (h=25-50 t/ha/yr), and very high (vh 50 t/ha/yr). At the highest erosion level (vh) location with the most extensive land damage to the narrowest respectively was Sarbar Rao (SB) = 116.84 ha, Galr Rao (GR), Sahansra Thakur (ST), Shakumbari Rao (SH), Khawonwala Rao (KH) Kahan Rao (KR), Nawagaon Rao (NW), Chamarla Rao (CH), Track Fallows (TF), Barkala Rao (BR), and Maskara Rao (MR) = 0.34 ha. Of 11 sub watershed, priority value index was calculated, and the highest value (main priority) to the lowest one (least priority) is respectively as follows: GR (Galr Rao) = 33,5, KR (Kahan Rao), ST (Sahansra Thakur), TF (Track Fallows), BR (Barkala Rao), SB (Sarbar Rao), SH (Shakumbari Rao), CH (Chamarla Rao), KH (Kharonwala Rao), MR (Maskara Rao), and NW (Nawagaon Rao) = 18,2. Therefore the main priority fell for sub watershed Galr Rao (997.32) and the least priority for watershed Nawagaon Rao (7646.78 ha).
Faculty of Forestry, Universitas Gadjah Mada
2008-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1532
Jurnal Ilmu Kehutanan; Vol 2, No 1 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1533
2015-11-19T03:31:15Z
jikfkt:ART
"080111 2008 eng "
2477-3751
0126-4451
dc
Studi Pembuatan Kelas Bonita pada Tegakan Acacia mangium Willd. di PT. Musi Hutan Persada, Sumatera Selatan
Santoso, Heru Budi
Alumni Fakultas Kehutanan UGM, Yogyakarta
Sadono, Ronggo
Jurusan Manajemen Hutan, Fakultas Kehutanan UGM, Yogyakarta
Susanti, Ari
Jurusan Manajemen Hutan, Fakultas Kehutanan UGM, Yogyakarta
Acacia mangium; forest productivity; site quality; site index; age index
Study on the Determination of Site Quality Index for Acacia mangium Willd. in PT Musi Hutan Persada, South Sumatra
Site index is required to estimate forest productivity. This study was conducted to generate a diameter-height model and use it to construct a direct site quality index for Acacia mangium Willd. stands without thinning by dominant height approach in PT. Musi Hutan Persada,South Sumatra. It comprises two phases, namely dominant height curve development and site index construction based on semi-permanent and permanent plots data. The regression analysis of maximum diameter was employed to estimate the dominant height. The accepted diameter-height model was used for modeling an anomorphic site index using Schumacher’s formula. Dominant height could be estimated using the equation:
Ln h = 3.588 - (6.955/d) , (R2 = 0.91, sum of square error = 0.24), where h : dominant tree height and d: stem diameter.
The equation was then used to modeling site index of A. mangium stands with age index of 6-years. The proposed model was :
Faculty of Forestry, Universitas Gadjah Mada
2008-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1533
Jurnal Ilmu Kehutanan; Vol 2, No 1 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1534
2015-11-19T03:31:15Z
jikfkt:ART
"080111 2008 eng "
2477-3751
0126-4451
dc
Pengaruh Bentuk dan Perbedaan Kombinasi Pengikat Kayu Lamina Balau Kuning (Shorea leavis Ridl) terhadap Tingkat MoE dan MoR
Wardhani, Lusita
Jurusan Teknologi Hasil Hutan, Fakultas Kehutanan Universitas Lambung Mangkurat
Suriansyah, Suriansyah
Alumni Fakultas Kehutanan, Universitas Lambung Mangkurat
Array
Effect of Forms and Different Combinations of the Extension of Lamina of Yellow Balau Wood (Shorea leavis Ridl) on MOE and MOR Levels
The research aimed to find out the mechanical strength of MoE and MoR of lamina woods with different forms and combinations of the extension. Balau wood (Shorea leavis Ridl) was used as an experiment object.
The research experiment was assigned based on Completely Randomized Design with two treatments and three replications. The treatments were: 4 extension types as A factor, and 4 extension fastener types as B factor. With combination of 4 x 4 x 3, the samples needed in total were 48. The Lamina’s MoE (Elasticity’s Modulus) ranged from 6.866,971 kg/cm² to 17.296,556 kg/cm² and nd the MoR (Modulus of Rupture) ranged from about 40,586 kg/cm² to 118,240 kg/cm².
Faculty of Forestry, Universitas Gadjah Mada
2008-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1534
Jurnal Ilmu Kehutanan; Vol 2, No 1 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1535
2015-11-19T03:31:15Z
jikfkt:ART
"080111 2008 eng "
2477-3751
0126-4451
dc
Bio-Economic Perspective to Fuelwood Policy Options in Uganda: A Demand–Supply Nexus
Mukadasi, Buyinza
Faculty of Forestry and Nature Conservation, Makerere University
Sowedi, Masaba
Institute of Environment and Nature Resources, Makerere University
Fuelwood; woodstoves; tree-farming; kerosene; Uganda
This study examines the benefits and costs of selected policy options for increasing fuelwood supplies or decreasing fuelwood demand in Hoima district, Uganda. On the supply side, a benefit-cost analysis is done on a government sponsored tree farming project. In order to reduce the demand for fuelwood, two demand-side options are considered, namely, introduction of an improved energy-efficient woodstove, and the substitution of a kerosene stove for a traditional woodstove. Greater understanding of the linkages among these factors requires a systems approach. We have proposed such an approach using a non-linear dynamic programming model to explore the system behaviour of forest degradation. Our results show that tree-farming is one of the possible approaches to increase the supply of fuelwood (energy), while the woodstoves and kerosene substitution are policies that reduce the demand for fuelwood. This helps to alleviate the rural energy shortage and take some pressure off existing protected forest areas. The tree cover in the forest areas declined by 6% in the BASE scenario, 4.8 % in POPG scenario and 4.7% in TECH scenario, indicating an overall trend of forest degradation in the Hoima district under each of these scenarios. Reductions in the population growth rate, introduction of improved agricultural technology and increase in the prices of major agricultural crops can help slow down the rates of forest decline. This study does not attempt to analyse the wider energy planning program that would be needed to understand accurately the various alternatives available in Uganda.
Faculty of Forestry, Universitas Gadjah Mada
2008-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1535
Jurnal Ilmu Kehutanan; Vol 2, No 1 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1536
2015-11-19T03:31:15Z
jikfkt:ART
"080111 2008 eng "
2477-3751
0126-4451
dc
Penggunaan Tepung Buah Nipah (Nyfa Fruticans Wurmb) sebagai Ekstender pada Perekat Urea Formaldehid untuk Papan Partikel
Sari, Noor Mirad
Jurusan Teknologi Hasil Hutan, Fakultas Kehutanan Universitas Lambung Mangkurat
Rosidah, Rosidah
Jurusan Teknologi Hasil Hutan, Fakultas Kehutanan Universitas Lambung Mangkurat
Rahman, Muhamad Yuliadi
Alumni Fakultas Kehutanan, Universitas Lambung Mangkurat
Array
Utilization of Nypa Fruit Flour (Nyfa Fruticans Wurmb) as an Extender in Urea Formaldehyde Adhesive for Particle Board
Nipah fruit (Nyfa Fruticans Wurmb) is a seasonal forest product abundantly produced in each season. Nipah fruit flour is believed to also function as an extender during adhesion process of wood products such as plywoods and particle boards. The study aims to determine the right composition between nipah fruit flour and industrial flour as an extender which, together with urea formaldehyde adhesive, to be applied to particle board. Results revealed that the composition of 50% industrial flour and 50% nipah fruit flour (A3 treatment) gave the highest Modulus of Elasticity (MoE) with value of 16,833.90 kg/cm2 while average value of all treatment was 12,131.41 kg/cm2. The MoE of A3 treatment fulfilled the national standard (SNI) of 15.000 kg/cm2. As for MoE, the composition of A3 (50% industrial flour and 50% nipah fruit flour) was the most efficient mixture in producing the highest MoR with 119.30 kg/cm2. The MoR value for A3 also fulfilled the national standard of 80 kg/cm2. Comparing between treatments, all other treatment gave the MoE value less than reuired by national standard. The particle boards produced by other treatments were easily bent due to high carbohydrate and water content that weaken the elasticity of boards. For MoR character, all treatments gave value as required by national standard (higher than 80 kg/cm2) except treatment A5 which gave the value of less than required (76,36 kg/cm2).
Faculty of Forestry, Universitas Gadjah Mada
2008-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1536
Jurnal Ilmu Kehutanan; Vol 2, No 1 (2008)
eng
Copyright (c) 2008 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1537
2015-11-19T03:26:22Z
jikfkt:ART
"070113 2007 eng "
2477-3751
0126-4451
dc
Dampak Kepariwisataan terhadap Erosi di Kawasan Wisata Kaliurang
Nurmansyah, Sofiudin
Alumni Fakultas Kehutanan Universitas Gadjah Mada
Kusumandari, Ambar
Jurusan Konservasi Sumber Daya Hutan, Fakultas Kehutanan UGM
Kaharuddin, Kaharuddin
Jurusan Konservasi Sumber Daya Hutan, Fakultas Kehutanan UGM
Array
Impact of Tourism on Soil Erosion in Tourist Area of Kaliurang
Tourism is one alternative of non timber based forest managements however, tourism activities will impact on the tourist areas, both biophysically and socially. The purpose of this research was to study the factors influencing soil erosion rate in tourist area, and to examine the effect of tourist characteristics, e.g. visiting characteristics and tourist activities on erosion rate.
The erosion prediction was carried out at tourist areas including Hutan Alam (Natural Forest), Taman Bermain Anak (Play Ground), Taman Wisata Alam (Natural Tourist Park), and Kali Kuning Camping Ground. The Universal Soil Loss Equation (USLE) model was applied. Correlation analysis was used to analyze the correlation between factors influencing soil erosion rate (rainfall erosivity, soil erodibility, slopes, vegetation and conservation practices) and erosion.
The research resulted that tourism significantly impacted on erosion at Play Ground, Natural Tourist Park 1, and Kali Kuning Camping Ground, except at Natural Tourist Park 2. The correlation analysis showed that all of the factors influencing soil erosion rate positively affected erosion. The results also showed that the tourist characteristics which influence erosion rate were tourists' visiting characteristics and their activities.
Faculty of Forestry, Universitas Gadjah Mada
2007-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1537
Jurnal Ilmu Kehutanan; Vol 1, No 1 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1538
2015-11-19T03:26:22Z
jikfkt:ART
"070113 2007 eng "
2477-3751
0126-4451
dc
Alokasi Pengeluaran Rumah Tangga Penyadap Getah Pinus di Desa Somagede, Kabupaten Kebumen Jawa Tengah
Cahyono, S. Andy
BP2 TP DAS IBB, Surakarta
Nugroho, Nunung Puji
BP2 TP DAS IBB, Surakarta
Indrajaya, Yonky
BP2 TP DAS IBB, Surakarta
Array
Expenditure Allocation of Resin Tapper`Households in Somagede Village, Kebumen Regency, Central Java
Pine forest has contributed to local people economy, especially the resin tappers. Increasing income will raise the household expenditure both of consumptive and productive needs. This research was aimed to assess the expenditure allocations of resin tappers’ household and to identify the factors affecting them.
Survey method was adopted in this research to collect the primary data of 30 respondents. The collected data was analyzed both quantitatively and qualitatively. Multiple linear regression model was applied to figure out the factors affecting the expenditure allocations of resin tappers’ household.
The results of the study indicated that the expenditure of resin tappers’ household reached to Rp 2,366,459 per annum and 58,08% of it was food and beverage expenditure. The expenditure allocations were affected significantly by tappers’ age, food and beverage expenditure, and farm land size. The tappers’ age, food and beverage expenditure had a positive effect whereas farm land size had a negative effect on the household expenditure.
Faculty of Forestry, Universitas Gadjah Mada
2007-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1538
Jurnal Ilmu Kehutanan; Vol 1, No 1 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1539
2015-11-19T03:26:22Z
jikfkt:ART
"070113 2007 eng "
2477-3751
0126-4451
dc
Pengaruh Variasi Penambahan Ragi dan Lamanya Waktu Fermentasi terhadap Hasil Fermentasi Etanol dari Serbuk Gergajian Kayu Ulin (Eusideroxylon zwageri T et B)
Jauhari, Ahmad
Jurusan Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Lambung Mangkurat
Sari, Noor Mirad
Jurusan Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Lambung Mangkurat
Array
Effect of Variation yeast addition and Duration of Fermentation on the Amount of Ethanol Produced from Sawdust of Ulin Wood (Eusideroxylon zwageri T et B)
The research was aimed to assess the influence of different levels of yeast addition and duration of fermentation on the amount and percentage of ethanol produced from sawdust of ulin wood as raw material.
Method used in this experiment was chemical hydrolysis of cellulose by using nitric acid (HNO3) as chemical agent. This substrate was inoculated into yeast cell (khamir) to convert glucose into ethanol. The amount of ethanol (ml) was obtained from distilled water (ml) multiplied by the azeotropic value of ethanol (95,5%), while the value ethanol (%) obtained was from the amount of ethanol (ml) divided by the amount of distilled water (ml) multiplied by 100 percent.
The study used a factorial design of 3 x 3 with 3 replications and the parameters used were A factor (amount of yeast) consisting of 5, 10, and 15 grams, respectively, and B factor (duration of fermentation) consisting of 1, 3, and 5 days, respectively. Significant differences of ANOVA at test levels of 5% and 1% will be continued by interaction test between the two factors to assess the influence of each factor on the amount and percentage of ethanol.
Results indicated that the amount of yeast applied, duration of fermentation and interaction between the two gave very significant effects on the amount of ethanol (ml) and its percentage (%). Following the treatment on ulin wood sawdust, the lowest yield of ethanol was found at A1B1 treatment (5 g, 1 day) with. 1.69 ml, while the highest at A3B3 treatment (15 g, 5 day) with 5.19 ml. In terms of ethanol percentage, the lowest was found at A1B1 treatment with 9.4% and the highest at A3B2 treatment with 29.9%.
Faculty of Forestry, Universitas Gadjah Mada
2007-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1539
Jurnal Ilmu Kehutanan; Vol 1, No 1 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1540
2015-11-19T03:26:22Z
jikfkt:ART
"070113 2007 eng "
2477-3751
0126-4451
dc
Sertifikat Lestari PT. Diamond Raya Timber: Aset atau Beban?
Maryudi, Ahmad
Jurusan Manajemen Hutan, Fakultas Kehutanan Universitas Gadjah Mada
Array
Sustainable Certificate of PT Diamond Raya Timber: Asset or Liability?
Several environmental non-government organizations and green parties pursue various strategies to promote sustainable management of forest resource. Due to the increasing environment awareness of some segments of timber users, they have established a certification body and developed a set of criteria and indicators, against which the performance of participating forest companies will be assessed. Early experiences in Indonesia showed that certification received warm welcome from several forest companies, as there is no question that they saw the attraction of being certified. However, it appears that their enthusiasm was dampened by the experience of a certified company. Certification might have been seen as more of a liability than an asset as the economic benefits from market access became less clear, while the costs became more apparent. The use of rigid standards might result in “negative” responses from forest companies. More proactive approaches might encourage the companies to join certification.
Faculty of Forestry, Universitas Gadjah Mada
2007-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1540
Jurnal Ilmu Kehutanan; Vol 1, No 1 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1541
2015-11-19T03:26:22Z
jikfkt:ART
"070113 2007 eng "
2477-3751
0126-4451
dc
People Attitude Toward Promotion of Agroforestry Practices in Buffer Zone Area of Mt. Elgon National Park, Uganda
Mukadasi, Buyinza
Department of International Environment and Development Studies, Norwegian University of Life Sciences
Wambede, Nabalegwa
Department of Geography, Kyambogo University KAMPALA
Array
Agroforestry is a historical practice in Uganda where people raised trees, crops and animals together traditionally on the same unit of farmland. This study was conducted to assess the attitude of people regarding the contribution of agroforestry practices in socio-economic development in the buffer zone area of Mutushet and Kortek, Mt. Elgon National Park, Uganda.
Primary data were collected through formal household interviews with the use of a structured questionnaire administered to five percent households selected randomly in the Village Environmental Committees (VECs). In addition, key informant interviews and informal group discussions were also held. Altogether 146 households were interviewed. Data were analyzed using Chi-square test.
Results show that the attitude of people towards contribution of agroforestry practices is independent of VECs, ethnic group, settlement period, and family size and depends on occupation, literacy level, distance from National Park boundary, damage caused by wild animals, land holding size and number of livestock holding. The important policy recommendation drawn from these findings is that intensive extension and motivation programs should be launched in those areas where the majority of people have unfavourable attitude towards agroforestry practices.
Faculty of Forestry, Universitas Gadjah Mada
2007-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1541
Jurnal Ilmu Kehutanan; Vol 1, No 1 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1542
2015-11-19T03:26:22Z
jikfkt:ART
"070113 2007 eng "
2477-3751
0126-4451
dc
Epidemi Penyakit Tumor pada Sengon (Paraserianthes falcataria) di Jawa Timur, Indonesia
Wiryadiputra, Soekadar
Pusat Penelitian Kopi dan Kakao Indonesia, Jember
Array
Gall Rust Disease Epidemic on sengon (Paraserianthes falcataria) in East java, Indonesia
In the early of 2005 at one of the coffee and cocoa estates in the district of Banyuwangi, East Java, an epidemic outbreak of gall disease on albizia (Paraserianthes falcataria) with heavy infestation level occurred. Arthropod pest initially was suspected as the causing agent of the gall. However, intensive observations in the field and laboratory revealed that the gall was caused by the rust fungus of Uromycladium tepperianum. It was a new outbreak of the disease reported in Indonesia.
Observation at one division of the estate showed that the extent of albizia trees infected by the pathogen reached to more than 50%. There was an indication that environmental factors especially rainfall and humidity strongly increased the disease intensity and sporulation of the fungus. Results on the fungicide trial conducted in the field indicated that spraying of the mixed solution of Carbendazim (Delsene MX 80 WP) and Flusilazol (Nustar 400 EC) at the concentration of 1 g and 0.3 ml formulation per liter of water respectively was very effective in suppressing the infestation. These mixed fungicides could suppress the disease infestation to 60.1% compared with untreated trees.
Faculty of Forestry, Universitas Gadjah Mada
2007-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1542
Jurnal Ilmu Kehutanan; Vol 1, No 1 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1550
2017-07-09T07:22:14Z
jikfkt:ART
"130125 2013 eng "
2477-3751
0126-4451
dc
Pola Aktivitas Harian dan Interaksi Banteng dan Rusa dalam Pemanfaatan Kawasan Padang Rumput Sadengan di Taman Nasional Alas Purwo, Banyuwangi, Jawa Timur
Subeno, Subeno
Jurusan Konservasi Sumberdaya Hutan
Fakultas Kehutanan Universitas Gadjah Mada
Array
Daily Activities Pattern and InteractionBetween Banteng and Deerin Sadengan Grazing a Area in Alas Purwo National Park, Banyuwangi, East Java
This research was aimed to compare the pattern of daily activities between banteng and deer, and their interaction on using feeding ground in Alas Purwo National Park, Banyuwangi, East Java. Methods used in this research were scan sampling, focused on groups of banteng and deer and focal animal sampling for four chosen individuals from each group. The observations began at 06.00 until 18.00. Daily activities recorded were resting, moving, feeding and drinking. Data analysis was done through arrangement of an ethogram to show daily activity and the time budget, and descriptive analysis to portray daily activity and interaction between banteng and deer. The results show that there are differences in the time used for resting and feeding between banteng and deer. Banteng used feeding ground more for resting (93,2%) and moving (5,7%). While deer used more for feeding (36,6%) and resting (61,8% ). Among chosen individuals of banteng and deer time variation in daily activities was apparent. Adult female of banteng has the highest time for resting (10,6 hours). It also occurred in adult female of deer (8,4 hours). Individual of deer which has the highest time for feeding is offspring with duration of 6,1 hours. Interaction between banteng and deer on using feeding ground tended toward symbiosis of commensalisms, in which they use it together without fighting. They too will vocalize together whenever other species wants to use the feeding ground.
Faculty of Forestry, Universitas Gadjah Mada
2007-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1550
Jurnal Ilmu Kehutanan; Vol 1, No 2 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1551
2017-07-09T07:22:14Z
jikfkt:ART
"130125 2013 eng "
2477-3751
0126-4451
dc
Dendrogram Zonasi Pertumbuhan Mangrove Berdasarkan Habitatnya di Kawasan Rehabilitasi Pantai Utara Jawa Tengah Bagian Barat
Poedjirahajoe, Erny
Jurusan Konservasi Sumberdaya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Array
Dendrogram Zoning of Mangrove Growth Based on Its Habitat in the Rehabilitation Area on the North Coasts, West Region of Central Java
The growth of rehabilitated mangrove, although planted at the same time, shows differences in terms of density and height growth. Such condition is visible in the North Shore of Brebes, Tegal and Pemalang Regency.
The research result shows that mangrove growth planted in 2001 on the North Shore of Brebes, Tegal and Pemalang Regency is not apart from several factors, among others are its habitat physical-chemical factors. The result of regression correlation analysis shows that the habitat factors which play an important role in the vegetation density are salinity, temperature and plankton population. Meanwhile, the most dominant factor which determines the vegetation height growth is salinity and phosphor. The combination role based on its habitat shows that mangrove growth in Brebes Regency on proximal (1P) and medial (1M) zone and the one in Pemalang Regency on proximal zone (3P) has the shortest cluster, so that those research locations have similarity on vegetation growth and its habitat factors. Meanwhile, the proximal (2P) zone in Tegal Regency is similar with the medial (2M) zone. Mangrove growth on distal zone in Tegal Regency has less good growth parameter and habitat factors compared to that of in Brebes and Pemalang for containing more sand.
From the research result, it can be concluded that the existence of habitat factors salinity, plankton population and phosphor have to be taken into consideration if a mangrove area will be rehabilitated/planted especially using Rhizophora mucronata seedlings. In order to reach the maximum achievement, one thing which has to be taken into consideration is the habitat clustering of the planted area, especially in Brebes, Tegal and Pemalang Regency area.
Faculty of Forestry, Universitas Gadjah Mada
2007-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1551
Jurnal Ilmu Kehutanan; Vol 1, No 2 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1552
2017-07-09T07:22:14Z
jikfkt:ART
"130125 2013 eng "
2477-3751
0126-4451
dc
Pengaruh Pola Susunan Laminasi Balok Bambu Tali (Gigantochloa apus Kurz) terhadap Kerapatan, Delaminasi dan Keteguhan Patah
Mahdie, Muhammad Faisal
Fakultas Kehutanan, Universitas Lambung Mangkurat
Rinaldi, Andy
Alumni Fakultas Kehutanan, Universitas Lambung Mangkurat
Array
Effect of Lamination Pattern of Tali Bamboo (Gigantochloa apus Kurz) Beam on Density, Delamination, And Rupture Strength
Bamboo is a potential species as its price is relatively less expensive than wood logs while it also represents a fast growing plant and is easy to plant. In general bamboos in South Kalimantan have not been exploited optimally. Its utilization for construction purposes is very limited. This study aims to identify the effects of lamination pattern on the density, delamination and rupture impregnability (Modulus of Rupture, MoR) of laminated bamboo blocks, with the combinations of a (reed wall- reed wall), b (reed wall-husk), and c (husk- husk and reed wall-reed wall). The results showed that lamination patterns affected the density, delamination and rupture impregnability of the laminae produced. The average density (kg/cm3) is 0.5321, 0.6923, and 0.6746 for treatments a, b, and c respectively. Delamination percentage (%) is 6.55, 16.65, and 21.1, while the rupture impregnability level (kg/cm2) is 228.99, 152.09,and 171.97 for treatments a, b, and c respectively. Delamination percentage of less than 10% suggets that the laminae produced can be used for building construction. that It is concluded that lamination pattern of reed wall-reed wall gave the best performance of bamboo lamina with the average density of 0.5321 kg/cm3, the delamination percentage of 6.55% , and the rupture impregnability level of 228.99 kg/cm2.
Faculty of Forestry, Universitas Gadjah Mada
2007-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1552
Jurnal Ilmu Kehutanan; Vol 1, No 2 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1553
2017-07-09T07:22:14Z
jikfkt:ART
"130125 2013 eng "
2477-3751
0126-4451
dc
Aktivitas Manusia dan Distribusi Banteng (Bos Javanicus D’alton 1832) di Taman Nasional Alas Purwo
Imron, Muhammad Ali
Laboratorium Satwa Liar, Jurusan Konservasi Sumberdaya Hutan, Fakultas Kehutanan Universitas Gadjah Mada
Sinaga, Jefri Oloan
Mahasiswa Jurusan Konservasi Sumberdaya Hutan, Fakultas Kehutanan, Universitas Gadjah Mada
Array
Human Activities and Distribution of Banteng (Bos Javanicus D’alton 1832) in Alas Purwo National Park
This study aims to comprehend whether human activities contribute to the presence of banteng (Bos sundaicus d’Alton 1836) in the Alas Purwo National Park (APNP). We laid continuous strip line transects from centre of human activities to the direction of core area of APNP. Three locations were selected: Sadengan grazing area, Giri Salaka Hinduism praying area, and Kutorejo village; representing low to high human disturbance respectively. We collected both direct and indirect presence of banteng as well as human activities within 20 metre strip lines with 10 metre width. Data were compiled each 100 metres and analyzed with means comparison to observe difference among locations. Correlation analyses were used to assess the relation between distance from centre of human activities, human activities and banteng presence. Regression analysis was used when significant correlations found.
Our non parametric test showed that human disturbances are significantly different among sites (Kruskal Wallis Test; df 2 = 6.220, p< 0.05). In similar tendency but different manner, it is showed that the different levels of human disturbance conveyed significant difference in number of banteng’s tracks (Kruskal Wallis Test; df 2 = 18.888, p< 0.05). The distance from centre of human activities is negatively related to number of human tracks (Spearman rho; r2= -0.307 N= 64, p<0.05*) and also to number of banteng’s tracks (Spearman rho, r2= -0.728 N= 30, p<0.05**). The regression analysis showed that number of human tracks explained 18.6% of total variation on number of Banteng’s tracks, while distance from centre of human activities explained 59%.
Faculty of Forestry, Universitas Gadjah Mada
2007-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1553
Jurnal Ilmu Kehutanan; Vol 1, No 2 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1554
2017-07-09T07:22:14Z
jikfkt:ART
"130125 2013 eng "
2477-3751
0126-4451
dc
Tingkat Kesukaan Rusa Bawean (Axis kuhlii) terhadap Jenis-Jenis Tumbuhan Bawah di Suaka Margasatwa dan Cagar Alam Pulau Bawean
Subrata, Sena Adi
Jurusan Konservasi Sumberdaya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Jauhar, Muhammad Faddel
Alumni Fakultas Kehutanan Universitas Gadjah Mada
Array
Level of Food Preference of Bawean Deer (Axis kuhlii) on Food Species in Wildlife Sanctuary and Nature Reserve of Bawean Island
This research has a background on the importance of food preference of Rusa Bawean (Axis kuhlii). This information can be used to ensure the adequacy of preferred food availability within their habitat. This paper aimed to estimate food preference of Rusa Bawean employing faecal analysis. The technique was selected because it is safe for the animal and is easy in data analysis and interpretation. To achieve the aim, quasi experimental design was applied to 30 vegetation plots and 60 faecal samples. Data was collected during January 2005 and June 2006 in the area of Wildlife Sanctuary and Nature Reserve of Bawean Island. Data was analyzed with chi-square test and food selection index. Result shows Rusa Bawean have preferences on some of food species, and they do not select their food species randomly according to its abundance. Preferred food species include Kabak-kabakan alas (Brachiaria distachya), Talioar (Panicum cordayum), Gadung (Dioscorea hispida), Andudur (Caryota mitis), Rombok putih (Merremia peltata), Pele (Urena lobata) and Kabak-kabakan merah (Ischaemum timorense). Whereas avoided food species include Lating-latingan (Scleria hebecarpa), Ancucu (Pericampylus glaucus), Lambu Merah (Paspalum conjugatum), Alang-alang (Imperata cylindrica), Padi-padian (Centotheca lappacea), Lente-lentean (Fimbristylis dichotoma), Taliata (Lygodium circinnatum ) dan Kayu sape (Symplocos adenophylla).
Faculty of Forestry, Universitas Gadjah Mada
2007-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1554
Jurnal Ilmu Kehutanan; Vol 1, No 2 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1555
2017-07-09T07:22:14Z
jikfkt:ART
"130125 2013 eng "
2477-3751
0126-4451
dc
Pengaruh Ekstrak Tembakau terhadap Serangan Rayap Kayu Kering Cryptotermes cynocephalus Light pada Bambu Apus (Gigantochloa apus Kurz)
Hadikusumo, Sutjipto A
Jurusan Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada
Array
Effect of Tobacco Extracts on Apus Bamboo (Gigantochloa apus Kurz) resistance against Drywood Termite Cryptotermes cynocephalus Light (Gigantochloa apus Kurz) Attacks
Bamboo is one of community forest products and people use it for many purposes. Due to insect attack such as termite, the life time of bamboo product is short. To avoid chemical pollution in bamboo preservation process, tobacco extract was used.
Tobacco was extracted in water, in the amounts of 100, 150 and 200 g in 1 l of water, at temperature of 70-80°C for 3 hours. Bamboo trees were cut, the bottom parts were soaked in tobacco extract solution for 1, 3 and 5 days. Samples were cut into 5 cm x 3 cm x bamboo thickness at the bottom, middle and upper parts of the bamboo tree. After being air dried, each sample was exposed to 50 dry wood termites in a small glass tube for two months.
The results showed that bamboo preservation by diffusion with high concentration of tobacco extract (200 g tobacco extracted in 1 l of water) resulted in 61% termite mortality.
Faculty of Forestry, Universitas Gadjah Mada
2007-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1555
Jurnal Ilmu Kehutanan; Vol 1, No 2 (2007)
eng
Copyright (c) 2007 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1556
2015-11-19T03:35:01Z
jikfkt:ART
"130118 2013 eng "
2477-3751
0126-4451
dc
Kajian Awal terhadap Potensi Kawasan Konservasi Taman Buru Gunung Masigit Kareumbi, Jawa Barat dalam Upaya Pengembangan Ekowisata
Deni, Deni
Departemen Konservasi Sumberdaya Hutan Fakultas Kehutanan Universitas Kuningan
Array
Preliminary Study of Potentiality of Hunting Park of Mt. Masigit KareumbiConservation Area, West Java for Ecotourism Development
Masigit Kareumbi Hunting Park, with all its uniqueness, specificity, beauty, natural phenomena, landscape and ecosystem types is the basis of capital whose existence required to be continuously explored and analyzed in order to develop ecotourism development. Ecotourism potential of Masigit Kareumbi Hunting Park have not been optimally managed to develop as ecotourism product to improve the life quality of surrounding local communities. This research was conducted to provide information on potential development of Masigit Kareumbi Hunting Park. Field survey was performed to determine the selected locations that can strategically be developed as natural tourism objects. The results of the study showed that Masigit Kareumbi Hunting Park had the diversity potencies of flora, fauna, landscape and ecosystem types potential to be developed for ecotourism products. These potencies should be optimized for the hunting park as well as to increase income of local community.
Faculty of Forestry, Universitas Gadjah Mada
2010-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1556
Jurnal Ilmu Kehutanan; Vol 4, No 1 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1557
2015-11-19T03:35:01Z
jikfkt:ART
"130118 2013 eng "
2477-3751
0126-4451
dc
Studi Kesesuaian Lahan untuk Penentuan Kawasan Lindung di Hutan Lindung Konak Kabupaten Kepahiang Provinsi Bengkulu
Senoaji, Gunggung
Jurusan Kehutanan, Fakultas Pertanian, Universitas Bengkulu
land suitability; forest protection; land protection area
Study of Land Suitability for Protected Area Selection in Konak Forest Protection, Kepahiang Regency, Bengkulu
The study aims to determine land suitability of the area into a forest protection by using field physical factors i.e. rainfall intensity, soil type, slope, and altitude. The research is conducted in Konak Forest Protection, Kepahiang, Bengkulu. Basic method used in this research was survey, with sampling and measurement in the field. The results shows the average value of forest protected areas: slope is 0-8% with value of 20, the type of land is podsolic (sensitive to erosion) with value of 60, and rainfall intensity is under 13.6 mm per day, with value of 10, and altitude is 500 meters above sea level. The total value of the factors is 90, far below the standard value of the protected forest which should be more than 174. This means that utilization for other functions, such as recreation area, city garden or land cultivation, will be more appropriate and useful than if only defined as forests protection.
Faculty of Forestry, Universitas Gadjah Mada
2010-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1557
Jurnal Ilmu Kehutanan; Vol 4, No 1 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1558
2015-11-19T03:35:01Z
jikfkt:ART
"130118 2013 eng "
2477-3751
0126-4451
dc
Sifat Anatomi dan Sifat Fisika Kayu Mindi (Melia azedarach Linn) dari Hutan Rakyat di Yogyakarta
Praptoyo, Harry
Jurusan Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada
mindi wood; wood; characteristics; anatomical properties; physical properties
Anatomical and Physical Properties of Mindi Wood (Melia azedarach Linn) from Community Forest in Yogyakarta
Information about mindi wood characteristics is very limited while utilisation of this wood on our society is very extensive. Better knowledge on anatomical and physical wood properties of mindi wood optimizes its utilization. Therefore, this study aims to identify anatomical (macroscopic and microscopic) and physical (moisture content, specific gravity and dimensional changes) wood properties of mindi taken from community forests around Yogyakarta. The macroscopic structural characteristics results showed that annual ring appeared clearly at transversal surface, having single vessel, vasicentric and diffuse parenchyma, rough texture, straight fiber direction, and no resin canal. Cell proportion of wood showed that fibers occupy more than 44%, followed by vessel (20%), parenchyma (19%) and rays (15%). Wood fiber dimension showed fiber length of 0.83 mm, fiber diameter of 14.57µ, and cell wall thickness of 2.50µ. Physical wood properties showed that mindi has 31% moisture content and 0.416 of basic specific gravity. Wood shrinkage from green to kilndry on longitudinal was 3.94 %, tangensial 5.74 %, and radial 2.60 %, with T/R ratio 2.38. Based on T/R ratio value, mindi wood is not recommended for wood construction due to its low dimensional stability. Furthermore, mindi wood also has high longitudinal wood shrinkage and low specific gravity indicating juvenility.
Faculty of Forestry, Universitas Gadjah Mada
2010-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1558
Jurnal Ilmu Kehutanan; Vol 4, No 1 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1559
2015-11-19T03:35:01Z
jikfkt:ART
"130125 2013 eng "
2477-3751
0126-4451
dc
Ecological and Socio-Economic Contribution of Mt. Elgon Forest Park, Eastern Uganda
Mukadasi, Buyinza
Forestry and Nature Conservation, Makerere University
forest use; degradation; participatory resource valuation
This paper explores the ecological and socio-economic contribution of Mt. Elgon forest park, eastern Uganda. An effort was taken to evaluate the importance of Mt. Elgon forest park resources to the local people by using the local plant knowledge to value the forest park resources. An integrated approach of participatory rural appraisal (PRA), Participatory Resource Valuation (PRV), household survey, group discussions and forest walks were conducted during the months of June to December, 2008 in Mutushet and Kortek Parishes, Kapchorwa District. Using random sampling methods, 120 respondents were selected and interviewed. Ten forest uses were identified with the highest dependence being in the supply of timber for income and domestic building poles, the latter having the highest average annual household value of UGx. 67919 (US$37). The forest use most valued in both Mutushet and Koterk was medicine with an average annual household value of UGx. 60,371 (US$ 33) and UGx. 75,464 (US$ 42) respectively. The forest provision of medicine, domestic building materials, soil conservation, bush meat, charcoal and timber was more valued in Koterk, while provision of firewood, honey and pasture were more valued in Mutushet. The forest’s provision of food was valued equally in the two areas with an average annual value of UGx. 30,186 per household. Forest park resources accounted for 55% of the household income. Participatory valuation approaches are ecommended for estimation of forest park resources’ value in a non-cash economy.
Faculty of Forestry, Universitas Gadjah Mada
2010-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1559
Jurnal Ilmu Kehutanan; Vol 4, No 1 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1560
2015-11-19T03:35:01Z
jikfkt:ART
"130125 2013 eng "
2477-3751
0126-4451
dc
Allometric Equations for Estimating Above Ground Biomass of Sengon (Paraserianthes falcataria) in The Community Forest of Bateh Village, Magelang
Purwanto, Ris Hadi
Department of Forest Management, Forestry Faculty, UGM
Azim, Muhammad Tafakur
Alumnus of Dept. of Forest Management, Forestry Faculty, UGM
allometric equations; biomass; (Paraserianthes falcataria); community forests
The above ground biomass of Sengon (Paraserianthes falcataria) in the community forest of Bateh Village were estimated by developing allometric equations. To establish the allometric equations, 400 sample trees were measured to determine the relationships between tree height (H) and stem diameter at breast height (D). Eighteen trees of various sizes were cut to measure the above ground biomass (stem, branch and leaves). The results showed that a diameter of 1.3m above the ground (D) alone was a good predictor of tree height (H). When D was combined with H, r2 was improved somewhat for stem, branch and leaves biomass. The relationships among measured tree dimensions drew a simple linear in log-log scale diagrams with r2 over 0.9699, suggesting the growth patterns of tree dimensions were closely interdependent, whereas the allometric equations between D and H was approximated by the hyperbolic relation with r2 over 0.9141. The individual tree equations appear to be applicable over a wide area of sengon in the community forest of Bateh Village, Magelang, Central Java.
Faculty of Forestry, Universitas Gadjah Mada
2010-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1560
Jurnal Ilmu Kehutanan; Vol 4, No 1 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1561
2015-11-19T03:35:01Z
jikfkt:ART
"130125 2013 eng "
2477-3751
0126-4451
dc
Penafsiran Volume Pohon Pinus merkusii melalui Foto Udara (Studi Kasus BKPH Majenang, KPH Banyumas Barat)
Sahid, Sahid
Jurusan Manajemen Hutan Fakultas Kehutanan Universitas Gadjah Mada
Array
Interpretation of Stock Volume of Pinus merkusii using Aerial Photographs (Case Study in BKPH Majenang, West Banyumas FMU
The study aims to compile and analyse the growing stock volume of Pinus merkusii by using stand parameter measured through aerial photographs. The study was conducted by using black-white panchromatic aerial photographs produced in 2005 and the scale was 1 : 20,000. The study was conducted in Pinus merkusii taping plots in the Majenang BKPH, under the forest districts of west Banyumas, Perum Perhutani using tree height, crown diameter and number of trees per hectare as parameters. Data analysis was done to define the relationship among these parameters in regression equation. The steps of the study were defining measurement plots in aerial photographs, measurement of stand parameters in the aerial photographs and field observation. Data analysis was performed using micro computer. As a result, the regression equation for each location as follows: V = 72,415 – 0,231 N + 35,242 H – 24,454D – 0,923 (N x D), with the determination coefficient was 0,789 and the significance of 95%. Where: V = growing stock volume (m3), N = the number of trees per hectare, H = tree height (m) and D = crown diameter (m). It was concluded that number of tree per hectare, tree height and crown diameter were good predictors for standing stock volume of Pinus merkusii.
Faculty of Forestry, Universitas Gadjah Mada
2010-01-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1561
Jurnal Ilmu Kehutanan; Vol 4, No 1 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1562
2016-08-05T08:58:30Z
jikfkt:ART
"130118 2013 eng "
2477-3751
0126-4451
dc
Sifat Anti Cendawan Trichophyton mentagrophytes dan Candida albicans dari Zat Ekstraktif Kayu Pelanjau (Pentaspadon motleyi)
Yusro, Fathul
Program Studi Ilmu dan Teknologi Hasil Hutan, Departemen Teknologi Hasil Hutan IPB
Syafii, Wasrin
Departemen Teknologi Hasil Hutan, Fakultas Kehutanan IPB
Pribadi, Eko Sugeng
Bagian Mikrobiologi Medik, Departemen Ilmu Penyakit Hewan dan Kesmavet, Fakultas Kedokteran Hewan IPB
Extractives; Pentaspadon motleyi Hook.f; antifungal; Trichophyton mentagrophytes; Candida albicans
Trichophyton mentagrophytes and Candida albicans Antifungal Activity of Palanjau (Pentaspadon metleyi) Wood Extractives
Pelanjau wood (P. motleyi) extractives traditionally used as medicine for skin infection such as scabies (tinea) and rash caused by fungal T. mentagrophytes and C. albicans. The aim of this research was to identify the effectiveness of pelanjau wood extractives on growth inhibitory of fungal T. mentagrophytes and C. albicans, isolate and identify extract compounds which have antifungal properties. Extraction and fractionation process yielded 7,04% of ethanol extract consisting of 0,28%, 1,28%, 1,19% and 4,29% of n-hexane, diethyl ether, ethyl acetate and residue fractions, respectively. Antifungal activity of pelanjau wood extract more effective on C. albicans growth inhibition than T. mentagrophytes fraction ethyl acetate at (0,03 and 0,06 mg/ml of MIC and MFC, respectively). Isolation of ethyl acetate fraction was resulted dominant compound EA6a and EA6c. NMR and GC MS analysis of compound EA6a indicate 2-Hidroxy octadecanoid acid, Hexadecanoic acid, Ethyl oleate, Octadecanoic acid, Vanilin and phenol,2-methoxy-4-(1-propenyl) as the possibly main component belonged to fatty acid and phenol group. Compound EA6c indicate Phenol, 4-(1,1 dimetylpropyl), Nonylphenol isomer, Phenol,4-(1,1,2,2-tetrametylbutyl), Nonyl-phenol mix isomer dan 4-Nonylphenol as the possibly main component in belong to phenol group.
Faculty of Forestry, Universitas Gadjah Mada
2010-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1562
Jurnal Ilmu Kehutanan; Vol 4, No 2 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1563
2017-07-09T07:25:29Z
jikfkt:ART
"130118 2013 eng "
2477-3751
0126-4451
dc
Studi Kenyamanan untuk Aktivitas di Lanskap Hutan Kota UGM Studi Kasus: Klaster Agro UGM
Irwan, Siti Nurul Rofiqo
Jurusan Konservasi Sumber Daya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Kaharuddin, Kaharuddin
Jurusan Konservasi Sumber Daya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Array
A Study of Comfort for Activities in Urban Forest Landscape of UGM; Study Case: Agro Cluster UGM
The phenomenon of global warming has caused discomfort activity in urban area. Greening in open space of Gadjah Mada University campus has been developed as urban forest landscape that supporting good environment produced high comfort for activity and enhancing urban conservation. The research objectives were to observe the comfort for activity in urban forest landscape, to observe the canopy coverage of urban forest and to reveal the effect of tree canopy coverage to the comfort for activity. Data collection was carried out by visual observation, questioner, micro climate measurement, and hemispherical images of the tree canopy coverage. Data were analyzed by descriptive statistics. The tree canopy coverage was calculated by the Sky View Factor (SVF) of hemispherical images. Research results showed that activity types in the urban forest landscape were study (10%), sitting (37%), meeting (39%), others (14%) at spread of sitting areas. Some factors that affect the comfort for activity in urban forest landscape were aesthetic, lower temperature, fresh air, inspirited area, and listened bird voice. The respondents (82%) said that the urban forest landscape was comfort for activity at whole time of 07.00 - 17.00 by the condition of local climate presented by air temperature at 29.7 - 32.6°C, normal humidity at 61.5 -74.1% and breeze wind velocity at 0.6 - 2.8 m/s. Tree canopy of urban forest landscape had covered more than 50% identified by Sky View Factor (SVF 0.026-0.446). The tree canopy coverage of urban forest created tree shaded areas for the activities which showed thermally comfort because of microclimate controlled by urban forest.
Faculty of Forestry, Universitas Gadjah Mada
2010-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1563
Jurnal Ilmu Kehutanan; Vol 4, No 2 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1564
2016-08-05T09:00:54Z
jikfkt:ART
"130118 2013 eng "
2477-3751
0126-4451
dc
Penentuan Tingkat Kompetisi Tajuk Tegakan Jati Hasil Uji Keturunan Umur 11 Tahun di KPH Ngawi
Sadono, Ronggo
Jurusan Manajemen Hutan Fakultas Kehutanan Universitas Gadjah Mada
Silalahi, Meifrida Lasmaria
Alumni Jurusan Manajemen Hutan Fakultas Kehutanan Universitas Gadjah Mada
superior tree; reference angle; competition zone; competition index; vertical structure
Determination of the Competition Level for Growing Space of Teak Canopy from 11-year- old Progeny Test in KPH Ngawi
The increasing demand of teak wood should be followed by the increasing of teak forest productivity through intensive silviculture, especially growing space manipulation. The main objective of this research was to determine the growing space competition.
The material was measurement data from eleven year progeny test located at the compartment 49a, RPH Sidowayah, BKPH Kedunggalar, KPH Ngawi. The growing space competition was calculated using Hegyi’s competition index. Superior trees were selected to determine competition zone of the subject tree and this result was proposed to calculate the competition index of all trees. Based on the correlation between competition index and tree height, vertical structure was then classified using k-means cluster.
Based on 300 superior trees, the competition zone could be determined using reference angle of 66°. The competition index was vary in between 0.00 and 4.23 with average value of 1.18. The correlation between the index and the tree height was found to be low with r = -0.227. Based on this correlation, the vertical structure was classified into four level namely dominant, co-dominant, medium, and suppressed respectively.
Faculty of Forestry, Universitas Gadjah Mada
2010-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1564
Jurnal Ilmu Kehutanan; Vol 4, No 2 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1565
2016-08-05T09:02:08Z
jikfkt:ART
"130118 2013 eng "
2477-3751
0126-4451
dc
Keberhasilan Okulasi Jati (Tectona grandis L.f.) Hasil Eksplorasi di Gunung Kidul
Indrioko, Sapto
Fakultas Kehutanan Universitas Gadjah Mada
Faridah, Eny
Fakultas Kehutanan Universitas Gadjah Mada
Widhianto, Aan Yuli
Alumni Fakultas Kehutanan Universitas Gadjah Mada
grafting; teak; exploration; ortet; Gunung Kidul
Grafting Success Story of Teak (Tectona grandis L.f.) from Exploration Material in Gunung Kidul
Teak exploration as planting material source of superior genotype is necessary for hedge orchard establishment for forest communities in order to produce the planting material by themselves. The objective of this study is to identify the success and growth of teak grafting resulted from exploration in Gunung Kidul region.
The exploration aimed to collect teak ortet (mother tree). The ortets would be used as materials for hedge orchard, as the cutting source for community forest plantation. The study was conducted in Gunung Kidul region (for exploration) and in the Laboratorium on Intensive Silviculture, Silviculture Department, Faculty of Forestry UGM. In the laboratory, the first three months was to examine grafting compatibility, and the second three months to monitor the growth of teak grafting. The experiment in the laboratory was performed with Completely Randomized Design (CRD), with treatment of 16 clones and 10 treeplot replication each, making total of 160 clones.
The study resulted in the following: 1) from the exploration, there were 52 clones having good genotypes; 2) from the 52 good-genotype clones, there were 16 clones having good compatibility; 3) in the period of 3 months, the best height growth was shown by clone number 6 with 27 cm; the best diameter growth by clone number 5 with 0.252 cm, and in term of leaf number, the best was shown by clone number 15 with 9.2 blades. In general clone number 6 showed the best compatibility and growth, with sprout life percentage of 37.03%; height growth of 2.7 cm; diameter growth of 0.114 cm and leaf number of 9.2 blades.
Faculty of Forestry, Universitas Gadjah Mada
2010-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1565
Jurnal Ilmu Kehutanan; Vol 4, No 2 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1566
2017-07-09T07:25:29Z
jikfkt:ART
"130118 2013 eng "
2477-3751
0126-4451
dc
Informasi dari Feses dan Jejak Kaki Rusa Sambar (Cervus unicolor) serta Implikasinya pada Akurasi Penaksiran Populasi
Suba, Rachmat Budiwijaya
Laboratorium Keanekaragaman Hayati, Fakultas Kehutanan Universitas Mulawarman
Boer, Chandradewana
Pusat Penelitian Hutan Tropis Universitas Mulawarman (PPHT Unmul)
Irman, Irman
Alumni Fakultas Kehutanan Universitas Mulawarman
Array
Information from Feces and Foot Tracks of Sambar Deer(Cervus unicolor), and Its Implication on PopulationEstimation
This study aims to investigate Sambar Deer (Cervus unicolor) ecology from the encounter of pellet piles groups and tracks in the study area. This study was carried out in Swanslutung village, one of the villages in the Paser District, East Kalimantan, where the hunting pressure is still relatively high and local people still depend on hunting for bush-meat of Sambar Deer. Further discussion addresses to find accurate and reliable scheme of population etimate. Average density estimate for the study area, based on the groups of pellet piles count, was 3.01 + 0.17 individuals/km2. Tracks can give information about sex and age classes, some of essential parts to study population dynamic of Sambar Deer. Dispersion of pellet piles groups and tracks can be used in tracking to study home range and territories of the species.
Faculty of Forestry, Universitas Gadjah Mada
2010-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1566
Jurnal Ilmu Kehutanan; Vol 4, No 2 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1567
2017-07-09T07:25:29Z
jikfkt:ART
"130118 2013 eng "
2477-3751
0126-4451
dc
Media Kompos Serbuk Gergaji Kayu Sengon dan Pupuk Lepas Lambat untuk Meningkatkan Pertumbuhan Semai Pinus merkusii di KPH Banyumas Timur
Hardiwinoto, Suryo
Jurusan Budidaya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Saputro, Nur Adin Eko
Alumni Jurusan Budidaya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Nurjanto, Handojo Hadi
Jurusan Budidaya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Widiyatno, Widiyatno
Jurusan Budidaya Hutan Fakultas Kehutanan Universitas Gadjah Mada
Array
Effects of Composted Sawdust of Falcata Media and Slow Release Fertilizer to Promote Pinus merkusii Seedling growth in Banyumas Timur FMU
Physical and chemical properties of the potting media, especially porosity and nutrient availability, are required to produce good quality seedlings of pine (Pinus merkusii Jungh et de Vries). Composted sawdust of sengon (Paraserianthes falcataria) wood is a potential material to be used for growing media of pine seedlings. However, since this material contains low nutrients, addition of a slow release fertilizer is required to meet the nutrient demand of seedling growth. The objective of this research was to determine the effects of wood sawdust compost and slow release fertilizer on the growth of pine seedlings. The experiment was arranged in a completely randomized design with two factors and four replications. The first factor was the rate of sawdust compost and the second factor was the rate of slow release fertilizer. Height and root-collar diameter were measured at 6 months of age. As the results, sawdust compost and slow release fertilizer gave a significant effect on height and diameter growths. However, the effect of sawdust compost on seedling growth depended on the rate of fertilizer. Combination treatment that gave the best seedlings growth was 100% sawdust compost + 0% soil (and 12 g fertilizer /1.5 liter media). The seedlings applied with this treatment had the mean height of 8.72 cm and diameter of 2.24 mm, which were significantly greater than the control with the mean height and mean diameter of 1.87 cm and 1.15 mm respectively.
Faculty of Forestry, Universitas Gadjah Mada
2010-07-11 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1567
Jurnal Ilmu Kehutanan; Vol 4, No 2 (2010)
eng
Copyright (c) 2010 Jurnal Ilmu Kehutanan
oai:ojs.journal.ugm.ac.id:article/1829
2013-04-30T07:28:07Z
jikfkt:ART
oai:ojs.journal.ugm.ac.id:article/1830
2013-04-30T07:28:07Z
jikfkt:ART
oai:jurnal.ugm.ac.id:article/1851
2016-08-29T14:54:11Z
jikfkt:ART
"110710 2011 eng "
2477-3751
0126-4451
dc
Seleksi Pohon untuk Sarang Kuntul Kerbau (Bubulcus ibis) di Dusun Wisata Ketingan Kab. Sleman Daerah Istimewa Yogyakarta
Kosasih, Eko
Staf Balai Taman Nasional Lorentz, Kabupaten Jayawijaya, Papua
Subrata, Sena Adi
Staf Pengajar Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Used resources; available resources; Bubulcus ibis
Penelitian seleksi pohon untuk sarang Kuntul kerbau (Bubulcus ibis) di desa Ketingan, Kabupaten Sleman, Yogyakarta bertujuan untuk menyediakan informasi dasar dalam manajemen populasi. Survei keberadaan sarang Kuntul kerbau dilakukan bersama dengan identifikasi ketersediaan jenis pohon. Pengukuran tingi pohon, ukuran tajuk, kerapatan tajuk dan jarak dari gangguan manusia juga dilakukan untuk masing-masing pohon. Uji Kai-kuadrat menunjukkan bahwa Kuntul kerbau memilih beberapa jenis pohon untuk bersarang seperti Gnetum gnemon L., Cassia siamea Lamk. Artocarpus heterophyllus Lamk., Callophyllum inophyllum L., Melia azedarach L., Antidesma bunius (L.) Spreng., dan Dysoxylum gaudichaudianum (Juss.) Miq. Tinggi pohon, tinggi tajuk, diameter dan jarak dari gangguan manusia menunjukkan perbedaan nyata antara pohon yang digunakan dan tidak digunakan untuk sarang tetapi diameter setinggi dada dan kerapatan tajuk pohohn tidak menunjukkan perbedaan nyata. Manajemen habitat Kuntul kerbau diperlukan dalam pengendalian populasi untuk konservasi jenis burung ini.
Kata kunci : penggunaan sumberdaya, ketersediaan sumberdaya, seleksi habitat, Bubulcus ibis
Tree Selection for Nest of Cattleengret (Bubulcus ibis) in Ketingan Tourisme Village, Sleman Regency, Yogyakarta
Abstract
Habitat selection of Bubulcus ibis in Ketingan Village, Sleman Regency, Yogyakarta was investigated to provide basic information for population management. Presence of Bubulcus ibis nest was surveyed along with identification available tree species. Tree height, canopy size and openness, and distance from human disturbance were also measured for each tree. The Chi Square test showed that bubulcus ibis selected several species as nest trees such as Gnetum gnemon L., Cassia siamea Lamk., Artocarpus heterophyllus Lamk., Calophyllum inophyllum L., Melia azedarach L., Antidesma bunius (L.) Spreng., and Dysoxylum gaudichaudianum(Juss.) Miq. Tree height, canopy height, canopy diameter and the distance from human disturbance showed a significant difference between used and non-used trees for the nest, however diameter breast high (DBH) and canopy openness of trees did not show significant differences. Habitat management of Bubulcus ibis should be improved by controlling its population that needed for the conservation of this bird species.
Faculty of Forestry, Universitas Gadjah Mada
2011-07-10 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1851
Jurnal Ilmu Kehutanan; Vol 5, No 2 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1852
2017-09-27T03:08:58Z
jikfkt:ART
"110710 2011 eng "
2477-3751
0126-4451
dc
Rekonstruksi Hutan Purba di Kawasan Karst Gunungsewu dalam Periode Sejarah Manusia
Faida, Lies Rahayu Wijayanti
Bagian Konservasi Sumberdaya Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Sutikno, Sutikno
Fakultas Geografi, Universitas Gadjah Mada, Yogyakarta
Fandeli, Chafid
Bagian Konservasi Sumberdaya Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Sunarto, Sunarto
Fakultas Geografi, Universitas Gadjah Mada, Yogyakarta
Array
Penelitian ini dilakukan di kawasan karst Gunungsewu yang terletak di wilayah kabupaten Gunungkidul, ai Kanigoro hingga Wediombo. Ada dua tujuan dalam penelitian ini, yaitu (1) menemukenali sejarah flora yang menghuni karst Gunungsewu dan (2) merekonstruksi profil hutan-purba berdasarkan periode sejarah manusia. Pendekatan Paleoetnoforestri digunakan metode dasar untuk rekonstruksi hutan, yang berpijak pada hukum uniformitas dan pendekatan analogi. Analisis polen dan pentarikhan radio karbon menjadi alat untuk rekonstruksi hutan selama periode sejarah kebudayaan manusia pada kala Holosen. Perolehan data di analisis secara komparatif dan asosiatif untuk mendapatkan jawaban secara kausatif, sehingga dapat ditarik kesimpulan induktif tentang kondisi hutan purba. Umur lapisan pengendapan polen dinyatakan dengan BP (Before the Present). Pernyataan umur dengan BP ini biasa digunakan dalam mempelajari sejarah kebumian, dan secara Internasional ditetapkan tahun 1950 sebagai titik awal. Untuk mempelajari sejarah kebudayaan manusia digunakan skala Sebelum Masehi-Masehi (SM-M), yang didasarkan pada kelahiran Kristus sebagai titik awal dalam kalender Masehi. Penelititan ini menghasilkan varisai tiga tipe flora dari jaman prasejarah hingga saat ini, yaitu tipe hutan bagian bawah pada 16.894±440 hingga 9.296±140 tahun BP (18.844-11.246 SM), tipe hujan tropika pada 9.296±140 hingga 1.753±90 tahun BP (11.246-3.703 SM), dan tipe hutan monsun pada 1.753±90 tahun BP hingga tarikh modern (3.703 SM - 1950 M). Kelompok flora Euphorbiaceae merupakan kelompok flora yang masa penghuniannya paling lama, yaitu ditemukan pada 16.894±440 tahun BP hingga sekarang, sedangkan kelompok Moraceae yang saat ini dikenal sebagai flora identitas kawasan karst ditemukan pada 9.296±440 tahun BP. Rekonstruksi profil hutan purba pada jaman prasejarah manusia menunjukkan bahwa hutan pegunungan bagian bawah pernah menghuni kawasan karst sejak sebelum periode Keplek, kemudian memasuki periode Keplek hingga Ngrijangan berubah dihuni oleh hutan hujan tropis, dan pada periode Klepu berubah menjadi tipe monsun. Tipe monsun ini terus berlangsung hingga jaman sejarah, bahkan sampai dengan saat ini. Ciri kebudayaan prasejarah yang subsistem dapat menjelaskan, bahwa bukan faktor antropogenik yang menyebabkan bukan tipe flora, merupakan karena perubahan iklim yang dipicu oleh berakhirnya zaman es yang menandai berakhir kala Pleistoten.
Kata kunci: Analisis polen, hutan purba pentarikhan karbon, zaman prasejarah, situs palentologi
Reconstruction of Paleoforest in Gunungsewu Karst Area in the Period of Human History
Abstract
This research was carried out in Gunungsewu Karst area, Gunungkidul District from Kanigoro to Wediombo. The main objectives of this research are (1) to identify floristic history and (2) to reconstruct the palaeoforest profiles in the area. Palaeoecobotanical approach is used as the basis for the reconstruction of palaeoforest. Descriptive-explanatory methods were used to explore, interpret, and reconstruct floristic tracks from pollen analysis, radiocarbon dating, vegetation analysis, and also human cultural history. Explanatory approach was used to describe collected data, to compare, to find association, and to explain the research finding. Hypothetical tests were done by deductive-inductive logics, using general theories for basic foundation to be verified by facts from the fields. This research resulted in three types of flora from Prehistoric times to the present, that is tropical mountainous forest of 16,894±440 - 9,296±140 years BP, tropical rainforests in 9,296±140 - 1,753±90 years BP, and monsoonal forests in 1,753±90 years BP until now. The Euphorbiaceae was the oldest flora occupied the area, existed between 16,894±440 years BP until now, while the Moraceae which is known as the karstic floral identity began to be found since 9,296±140 years BP. Reconstruction of palaeoforest in human prehistory provides information that the tropical mountain forests had inhabited the area before the era of Keplek, then entering the era of Keplek until Ngrijangan the tropical rainforest occupied this area. In the era of Klepu, the forest has been turned into the monsoon type and this type persists through history until now. Cultural traits of prehistoric subsistence can explain that change in the types of flora is not caused by anthropogenic factors, but due to climate change triggered by the ice age expiration that marked the end of the Pleistocen.
Faculty of Forestry, Universitas Gadjah Mada
2011-07-10 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1852
Jurnal Ilmu Kehutanan; Vol 5, No 2 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1853
2017-09-27T03:08:58Z
jikfkt:ART
"110710 2011 eng "
2477-3751
0126-4451
dc
Pertumbuhan Bulbil Iles-Iles (Amorphophallus muelleri Blume) Berbagai Ukuran pada Beberapa Jenis Media Tanam
Sumarwoto, Sumarwoto
Fakultas Pertanian UPN "Veteran" Yogyakarta
Maryana, Maryana
Fakultas Pertanian UPN "Veteran" Yogyakarta
Array
Iles-iles atau porang menghasilkan bulbil berbagai macam ukuran, dan biasanya oleh petani yang digunakan sebagai bibit hanya yang berukuran besar saja. Dalam percobaan ini semua bulbil, mulai yang berukuran kecil, sedang dan besar ditumbuhkan pada beberapa jenis media tanam dengan tujuan untuk memperoleh bulbil yang pertumbuhannya paling baik dan media paling cocok untuk pertumbuhan awal dari bahan tanam berupa bulbil. Disamping itu studi ini juga menguji adanya interaksi dari kedua faktor yang diujikan yaitu antara ukuran bulbil dan jenis media tanam yang dicobakan. Percobaan dilaksanakan di kebun Fakultas Pertanian di Kampus Condongcatur, pada ketinggian tempat 115 mdpl di mulai pada musim hujan tahun 2010/2011. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok dua faktor dengan tiga ulangan. Faktor pertama adalah ukuran bulbil (U) terdiri atas tiga taraf: U1 kecil (bobot ± 1,5 gram), U2 sedang (bobot ± 5 gram), U3 sedang (bobot ± 10 gram). Faktor kedua jenis media tanam terdiri atas tiga taraf: M1 (tanah + serasah), M2 (tanah + pukan sapi), dan M3 (tanah + pukan ayam). Hasil percobaan menunjukkan bahwa bulbil yang berukuran sedang dan besar sama baik jika digunakan sebagai bibit, sedangkan bulbil yang kecil dapat digunakan sebagai bibit jika telah melalui pemeliharaan khusus terlebih dahulu. Media tanam berupa tanah yang dicampur dengan pukan ayam memberikan hasil yang terbaik daripada perlakuan lainnya. Pada uji interaksi, tampak terjadi interaksi kedua factor pada beberapa parameter, di antaranya pada diameter kanopi daun, diameter batang semu, diameter umbi dan bobot basah umbi.
Kata kunci: Iles-iles (Amorphophallus muelleri), bulbil (umbi daun), media tanam
Growth of Different Sizes of Bulbil Iles-iles (Amorphophallus muelleri Blume) on Several Planting Media Types
Abstract
Iles-iles or porang produces various sizes of bulbils, and farmers usually use only large ones. In this study, all sizes of bulbil: small, medium and large were grown on several planting media types. The purpose of this experiment is to obtain the best bulbil growth and the most suitable media for the initial growth of plant material in the form of bulbil. In addition, this study aims to test the interaction of both factors, bulbil size and type of planting media on bulbils produced. The experiment was done in the Faculty of Agriculture UPN "Veteran" Yogyakarta experimental field in Condongcatur, at 115 m asl, at the beginning of rainy season of 2010/2011. The experiment was done with two-factors and three replications constructed in Randomized Block Design. The first factor was the size of the bulbil (U) consisting of three levels: U1 small (± 1.5 gram), U2 medium (± 5 gram), and U3 large (± 10 gram). The second factor is the type of planting media which consists of three levels: M1 (soil + litter), M2 (soil + cow manure), and M3 (soil + chicken manure).The results showed that medium size and large size bulbil are good to be used as seeds, while the small one can be used as seed only if it has been maintained in special treatment. M3 planting medium (soil + chicken manure) has given the best result compared to the other 2 treatments. Results of interaction test showed that there were interactions of both factors on some parameters including diameter leaf canopy, pseudo-stem diameter, root diameter and fresh weight of bulb.
Faculty of Forestry, Universitas Gadjah Mada
2011-07-10 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1853
Jurnal Ilmu Kehutanan; Vol 5, No 2 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1854
2016-08-30T07:37:06Z
jikfkt:ART
"110710 2011 eng "
2477-3751
0126-4451
dc
Kajian Ekosistem Mangrove Hasil Rehabilitasi pada Berbagai Tahun Tanam untuk Estimasi Kandungan Ekstrak Tanin di Pantai Utara Jawa Tengah
Poedjirahajoe, Erny
Bagian Konservasi Sumberdaya Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Widyorini, Ragil
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Mahayani, Ni Putu Diana
Bagian Konservasi Sumberdaya Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Mangrove; ecosystem; tannin extract
Penelitian ini dilakukan di kawasan rehabilitasi mangrove Pantai Utara Pemalang dan Rembang, Dari dua lokasi tersebut masing-masing di pilih tanam mangrove yang sama. Setiap tahun tanam dibagi dalam tiga zona dari arah laut ke darat. Kondisi ekosistem mangrove dikaji melalui pendekatan terhadap pengukuran kerapatan, rata-rata tinggi dan diameter, ketebalan lumpur, salinitas dan kandungan bahan organik pada setiap zonasi dan setiap tahun tanam. Untuk memperkirakan kandungan ekstrak tanin, pada setiap tahun tanam diambil 3 sampel vegetasi (dalam satu zona diambil satu sampel), kemudian dikelupas kulitnya, ditimbang dan dilakukan analisis laboratorium. Kandungan ekstrak tanin dalam satu tahun tanam dapat diestimasi dengan cara menghubungkan dengan nilai kerapatannya. Uji varian untuk dua sifat yang berbeda, dilakukan untuk melihat signifikasi kerapatan tanaman pada setiap tahun tanam pada dua lokasi rehabillitasi mangrove. Hasil penelitian menunjukkan bahwa estimasi kandungan ekstrak tanin di Pemalang dan Rembang pada tahun tanam 2002 rata-rata menunjukkan angka yang lebih tinggi daripada tahun tanam 2003 dan 2006. Pada tahun 2002 di Pemalang, estimasi ekstrak tanin sebesar 105,93 kg/ha sedangkan di Rembang mencapai 159,23 kg/ha. Pada tahun tanam 2006 mangrove di Pemalang mempunyai kandungan ekstrak tanin sekitar 80,90 kg/ha, sedangkan di Rembang sekitar 143,36 kg/ha.
Kata kunci: Mangrove, ekosistem, ekstrak tanin.
A Study of Rehabillitated Mangrove Ecosystem in Different Planting Year to Estimate Tannin Extract Content in Northern Coast of Central Java
Anstract
The research was conducted in the mangrove plantation areas of Pemalang and Rembang North coasts. From those two areas, mangrove vegetations with the same three plantation ages were chosen which were then divided into three zones from the sea. Tree density, height and diameter, the depth of sediment, water salinity and the content of organic matter were measured and assessed for each mangrove zones and plantation ages. In order to estimate the content of tannin extract of a mangrove tree, three mangrove trees of each plantation age were taken as samples. The wood of the trees were then peeled off, measured the weight and taken to the laboratory to analyze their tannin extract content. The content of tannin extract of the whole mangrove areas was obtained by multiplying the average of tannin extract content per tree with the vegetation density of those two mangrove areas. Varians analysis was employed to find out the significant different of the density three plantation ages of two mangrove rehabilitation areas. The results showed that for plantation years of 2002, the tannin extract content at both mangrove plantation areas of Pemalang and Rembang in averages was estimated to have a higher amount than those of plantation year 2003 and 2006. Respectively, the tannin extract content of plantation year of 2002 in Pemalang and Rembang were estimated to have 105.93 kg/ha and 159.23 kg/ha tannin extract. Mangrove vegetation with plantation year of 2006 in Pemalang contained 80.90 kg/ha, while for Rembang is 146.36 kg/ha.
Faculty of Forestry, Universitas Gadjah Mada
2011-07-10 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1854
Jurnal Ilmu Kehutanan; Vol 5, No 2 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1855
2017-09-27T03:08:58Z
jikfkt:ART
"110710 2011 eng "
2477-3751
0126-4451
dc
Kajian Ekonomi Biokraft Campuran Batang dan Limbah Cabang Mangium pada Berbagai Kondisi Pemasakan Pulp
Silsia, Devi
Fakultas Pertanian, Universitas Bengkulu, Bengkulu
Yahya, Ridwan
Fakultas Pertanian, Universitas Bengkulu, Bengkulu
Mucharromah, Mucharromah
Fakultas Pertanian, Universitas Bengkulu, Bengkulu
Antonio, Jerry
Fakultas Pertanian, Universitas Bengkulu, Bengkulu
Array
Pemberian jamur P. chrysosporium pada serpih campuran batang dan cabang mangium sebelum dipulping (biopulping) mampu meningkatkan efisiensi penggunaan bahan kimia pemasak, menghemat penggunaan energi serta memperbaiki kualitas dari limbah cair pulp yang dihasilkan. Sebelum diaplikasikan dalam industri pulp maka metode ini harus dikaji secara ekonomi. Penelitian ini bertujuan untuk menentukan proses biokraft yang menguntungkan untuk diaplikasikan pada industri pulp. Dalam penelitian ini dilakukan perhitungan terhadap seluruh biaya yang dikeluarkan (capitalized cost) per ton pulp yang dihasilkan dari metode biokraft dengan modifikasi pemasakan pengurangan bahan kimia, pengurangan energi dan kombinasi pengurangan bahan kimia dan energi. Hasil yang diperoleh dibandingkan dengan biaya yang dikeluarkan pada proses kraft konvensional. Hasil penelitian menunjukkan bahwa metode biokraft dengan modifikasi pengurangan energi layak diaplikasikan pada indusri pulp karena memiliki CC/ton pulp terkecil yaitu Rp. 50.952.915,15 /ton pulp sepanjang kenaikan biaya operasi biopulping dalam rentang 5-30%.
Kata kunci: Biokraft, A. mangium, analisis ekonomi, pulp.
An Economic Study of Biokraft From Mixed of Trunk and Branch Wastes of Mangium on Several Pulping Process Conditions
Abstract
Addition of P. chrysosporium fungus on chip mixture of mangium trunk and branch before pulping process could increase the efficiency of chemical used, save energy consumption and improve the quality of effluent. Before application in the pulp industry, it should be made sure that biokraft method of mangium trunk and branches mixture is economically feasible. This study aims to determine the proper biokraft process applied to the pulp industry. In this study, costs incurred from biokraft modified cooking methods (chemical reduction, energy reduction and the combination of chemicals and energy reduction) were calculated, capitalized and then compared with the cost incurred from conventional kraft process.The results showed that biokraft method with modifications on energy reduction was economically feasible to be applied in pulp industry because it has the smallest CC/ton of pulp (Rp. 50,952,915.15 /ton of pulp) on condition that an increase of biopulping operating cost is in the range of 5-30%.
Faculty of Forestry, Universitas Gadjah Mada
2011-07-10 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1855
Jurnal Ilmu Kehutanan; Vol 5, No 2 (2011)
eng
Copyright (c) 2011 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/1856
2016-08-30T07:40:17Z
jikfkt:ART
"110710 2011 eng "
2477-3751
0126-4451
dc
Potensi Produksi Arang dari Hutan Rakyat Desa Bangunjiwo, Kecamatan Kasihan, Bantul, Daerah Istimewa Yogyakarta
Purwanto, Ris Hadi
Bagian Manajemen Hutan, Fakultas Kehutanan UGM, Yogyakarta
Ginting, Nius Abdi
Alumni Fakultas Kehutanan UGM, Yogyakarta
Charcoal production; woody perennial; community forests
Asam jawa (Tamarindus indica) dan mahoni (Swietenia macrophylla) yang banyak tumbuh di hutan rakyat Desa Bangunjiwo merupakan calon ideal yang patut diajukan sebagai bahan baku arang karena keduanya termasuk golongan kayu keras yang memiliki kualitas arang baik dan harga jual dari kedua jenis arang tersebut mempunyai daya tarik untuk menambah penghasilan. Informasi tentang produksi arang dari jenis-jenis tanaman berkayu yang tumbuh di hutan rakyat diestimasi melalui penyusunan persamaan allometrik yang bisa dipakai untuk tegakan pohon yang masih berdiri. Untuk menyusun persamaan allometrik, 30 sampel potongan kayu log jenis asam jawa dan 29 sampel potongan kayu log jenis mahoni dibuat arang dengan tungku pembakaran tradisional untuk menentukan hubungan antara volume log kayu perkakas (Vkp) dengan produksi arangnya (Pa). Bahan baku pembuatan arang berupa log kayu perkakas dari hutan rakyat baik dari bagian batang maupun cabang yang mempunyai batas diameter 7 cm. Hasil penelitian menunjukan bahwa volume log kayu perkakas mempunyai hubungan yang sangat kuat dengan produksi arangnya (asam jawa: Pa = 185,6180 (Vkp)0,9455 , n = 30, r2 = 0,9559; mahoni: 321,2263(Vkp)1,0725 , n = 29, r2 = 0,9459; campuran = 235,0601 (Vkp)1,0008 , n = 59, r2 = 0,9465). Potensi produksi arang di hutan rakyat diestimasi berdasarkan persamaan allometrik tersebut. Potensi produksi arang di hutan rakyat Desa Bangunjiwa sebesar 12,067 ton/ha, sebanding dengan nilai uang Rp 21.117.250,00 /ha yang dikontribusikan dari hutan rakyat sebagai pendapatan daerah setempat.
Kata kunci: Produksi arang, tanaman berkayu, hutan rakyat.
Potentials of Charcoal Productions from Community Forest in Bangunjiwo Village, Kasihan Sub Regency, Bantul, Yogyakarta
Abstract
Asam jawa (Tamarindus indica) and mahoni (Swietenia macrophylla) which predominantly grow on the community forests of Bangunjiwo Village are an ideal candidate as raw matterial of charchoal production because they're hard wood makes good quality charchoal and income from its charchoal are an attractive source of supplemental revenue. Information on its charchoal production are needed, but this information is currently lacking. The potential of charcoal production of woody perennial in the community forests were estimated by developing allometric equations for standing trees. To establish the equations 30 sample logs of tamarind and 29 sample logs of mahoni were made charcoal by traditional kiln to determine the relationships between the mechantable timber volume/log (Vkp) and its charcoal production (Pa). The raw material of charcoal production from the merchantable timber volume in the community forests was the ligneous material contained in the bole and branches which both with a diameter of at least 7 cm. The results showed that the merchantable timber volume was strongly related to the charcoal production (tamarind: Pa = 185.6180 (Vkp)0.9455, n = 30, r2 = 0.9559; mahoni: 321.2263 (Vkp)1.0725, n = 29, r2 = 0.9459; mixed: = 235.0601 (Vkp)1.0008, n = 59, r2 = 0.9465). The potential of charcoal production in the community forests was then estimated based on the allometric equations. The potential of charcoal production in these community forests was 12.067 ton/ha, equal to Rp 21.117.250,00 /ha which contributing the forest to the regional income.
Faculty of Forestry, Universitas Gadjah Mada
2011-07-10 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/1856
Jurnal Ilmu Kehutanan; Vol 5, No 2 (2011)
eng
Copyright (c) 2011 Jurnal Ilmj Kehutanan
oai:ojs.journal.ugm.ac.id:article/2052
2013-06-19T07:54:17Z
jikfkt:ART
oai:ojs.journal.ugm.ac.id:article/3302
2014-01-29T05:15:52Z
jikfkt:ART
oai:jurnal.ugm.ac.id:article/3305
2017-07-09T07:28:45Z
jikfkt:ART
"140129 2014 eng "
2477-3751
0126-4451
dc
Akselerasi Pertumbuhan Cendana (Santalum album) dengan Aplikasi Unsur Hara Makro Ensensial pada Tiga Jenis Tanah
Faridah, Eny
Bagian Silvikultur, Fakultas Kehutanan UGM, Yogyakarta
Supriyo, Haryono
Bagian Silvikultur, Fakultas Kehutanan UGM, Yogyakarta
Wibisono, M Gunawan
Bagian Silvikultur, Fakultas Kehutanan UGM, Yogyakarta
Afiani, Kristinawati Dwi
Alumni Fakultas Kehutanan UGM
Hartanti, Dian
Alumni Fakultas Kehutanan UGM
Array
Cendana (Santalum album Linn.) merupakan satu dari pilihan penting untuk digunakan dalam program rehabilitasi lahan-lahan kritis di Indonesia. Upaya untuk mempercepat tingkat pertumbuhannya menjadi sangat penting karena pertumbuhannya yang lambat mengganggu tingkat keberhasilan program rehabilitasi hutan. Mempertimbangkan permasalahan tersebut, studi ini dilakukan dengan tujuan mendapatkan formulasi pendekatan untuk mempercepat pertumbuhan cendana melalui aplikasi unsur hara makro esensial yang dibutuhkan cendana pada tiga tipe tanah, dalam bentuk pupuk biologi seperti biofosfo dan biosulfo. Secara spesifik, penelitian ini bertujuan untuk: 1) Pengaruh jenis media tanah (Grumusol (Vertisol), Mediteran (Alfisol) dan Regosol (Entisol)) terhadap pertumbuhan semai cendana, 2) Pengaruh jenis dan dosis pupuk (biosulfo, biofosfo, dan NPK) terhadap pertumbuhan semai cendana, dan 3) Pengaruh jenis media tanah, jenis serta dosis pupuk terhadap ketersediaan hara pada tanah dan jaringan daun tanaman. Penelitian dilakukan di Lab. Silvikultur Intensif, Klebengan, Fakultas Kehutanan UGM dengan menggunakan anakan cendana umur enam bulan. Desain Rancangan Acak Lengkap (RAL) digunakan dengan perlakuan berupa 3 tipe tanah (Grumusol (Vertisol), Mediterran (Alfisol) dan Regosol (Entisol)), 3 tipe pupuk (biosulfo, biofosfo, dan NPK), serta 5 dosis pupuk (0; 2,5; 5; 7,5 dan 10 g) dengan 5 ulangan untuk setiap unit eksperimen. Parameter yang diukur meliputi tingkat pertumbuhan tanaman (pertumbuhan tinggi & diameter, panjang akar) dan tingkat kandungan hara pada tanah dan jaringan daun tanaman. Hasil penelitian menunjukkan bahwa tanah Mediteran secara positif mempengaruhi semua parameter pertumbuhan diikuti oleh Regosol dan Grumusol, sementara aplikasi jenis dan dosis pupuk yang berbeda tidak memberikan pengaruh yang nyata terhadap semua parameter pertumbuhan. Tanah Mediteran memiliki kandungan N dan K paling tinggi dibandingkan dengan jenis tanah Regosol dan Grumusol, sementara tanah Regosol memiliki kandungan P-tersedia yang tertinggi diikuti dengan Mediteran dan Grumusol. Interaksi antara tanah Grumusol dengan pupuk biofosfo dan biosulfo menghasilkan kadar P-tersedia tanah yang terendah. Untuk kurun waktu 3 bulan, pemberian pupuk biofosfo, biosulfo dan NPK pada dosis yang berbeda meningkatkan kadar P, S dan N jaringan daun tanpa tren perubahan yang jelas.
Kata kunci: cendana, akselerasi pertumbuhan, pupuk biologi, tipe tanah
An Acceleration of Cendana (Santalum album) Growth Using Addition of Essential Macro Nutrients n on Three Types of Soil
Abstract
Sandalwood is one of important alternatives to use for rehabilitation programs of critical land areas in Indonesia. Therefore, due to its slow growth which held up forest rehabilitation program, attempts to accelerate its growth rate are crucially necessary. Considering that problem, the study is aimed to formulate an approach to accelerate cendana’s growth through the application of essential macro nutrients needed by cendana grown in three types of soil in the form of biofertilizers such as biofosfo and biosulfo. In a specific way, the study aimed to analyze 1) the effect of soil types ((Grumusol (Vertisol), Mediteran (Alfisol) dan Regosol (Entisol)) on growth of sandalwood, 2) the effect of fertilizer types and dosages on growth of sandalwood, and 3) the effect of soil type, and fertilizer types and dosages on nutrient content of soil and plants’ leaves. The research was conducted in Lab. of Intensive Silviculture, Klebengan, the Faculty of Forestry GMU using cendana seedlings of 6 months old. Research was applied using Completely Randomized Design (CRD) with treatments of 3 soil types (Grumusol (Vertisol), Mediterran (Alfisol) and Regosol (Entisol)), 3 fertilizer types (biosulfo, biofosfo, and NPK), and 5 fertilizer dosages (0, 2.5, 5, 7.5 and 10 g) with 5 replications for each experiment unit. Parameters assessed were plant growth rate (height & diameter growth, root length), and nutrient level of soil media and plant leaves. The results showed that Mediterran soil positively affected all growth parameters (height, diameter, root length) followed by Regosol dan Grumusol, while application of different fertilizers and dosages did not give significant effects on all plant growth parameters. Mediteran soil contained the highest N and K followed by Regosol and Grumusol, while Regosol contained the highest available P followed by Mediteran and Grumusol. Interaction between Grumusol and biofosfo/biosulfo, which resulted in lowest growth of all parameters, contained the lowest soil P level, indicating the role of phosphate on plant growth. During the 3-month period, the application of biofosfo, biosulfo dan NPK at different dosages increased leaf P, S and N level with no clear trend.
Faculty of Forestry, Universitas Gadjah Mada
2012-01-29 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/3305
Jurnal Ilmu Kehutanan; Vol 6, No 1 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/3306
2017-07-09T07:28:45Z
jikfkt:ART
"140129 2014 eng "
2477-3751
0126-4451
dc
Aktivitas Antioksidan Ekstrak Metanol Kayu Mangifera indica L., Mangifera foetida Lour, dan Mangifera odorata Griff.
Lukmandaru, Ganis
Jurusan Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Vembrianto, Kristian
Alumni Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Gazidy, Anisa Alfiana
Alumni Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Array
Ekstrak dari kayu dan kulit batang tiga spesies mangifera, yaitu mangga (Mangifera indica L.), pakel (Mangifera foetida Lour), dan kweni (Mangifera odorata Griff.) telah diuji aktivitas antioksidannya (AAO). Tiap bagian batang tersebut diekstrak dengan metanol (MeOH) dan ekstrak kasarnya kemudian difraksinasi secara bertingkat dengan pelarut n-heksana, etil asetat (EtOAc) dan n-butanol untuk memperoleh 4 fraksi berbeda. Sifat anti oksidan dari ekstrak MeOH dan hasil fraksinasinya ditentukan melalui uji 1,1-diphenyl-2-picryl-hydrazyl (DPPH). Penelitian ini menunjukkan bahwa ekstrak MEOH dari gubal pakel serta kulit kweni secara nyata memberikan AAO tertinggi jika dibandingkan dengan antioksidan standar (asam galat dan katekin) dengan nilai IC50 sekitar 3-10 ppm. Dari beberapa faksi yang dipisahkan pada ekstrak MeOH di bagian-bagian tersebut, fraksi terlarut EtOAc secara nyata menunjukkan AAO tertinggi. Uji identifikasi metabolit sekunder dengan reaksi kimia secara kualitatif mengindikasikan bahwa alkaloid dan tanin berperan pada hasil pengujian AAO. Kadar fenolat total (KFT) dari tiap ekstrak juga ditentukan berdasarkan metoda Folin-Ciocalteu. Baik pada bagian ekstrak kasar maupun hasil fraksinasi, hanya korelasi yang lemah didapatkan apabila antara nilai AAO dan KFT dihubungkan.
Kata kunci : Mangifera, ekstraktif, antioksidan, uji DPPH, kadar fenolat
Antioxidant Activity of Methanol Extracts from Mangifera indica L., Mangifera foetida Lour, and Mangifera odorata Griff.Woods
Abstract
Wood and bark extracts of three mangifera species, mangga (Mangifera indica L.), pakel (Mangifera foetida Lour), and kweni (Mangifera odorata Griff.) were examined for its antioxidant activity (AOA). Each stem part was extracted with methanol (MeOH) and the crude extract was then sequentially partitioned with n-hexane, ethyl acetate (EtOAc) and n-butanol to obtain four different fractions. The antioxidant properties of the MeOH extracts and their fractions were determined by 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. This study demonstrated that the MEOH extracts from the sapwood of pakel as well as the bark of kweni significantly exhibit the strongest AOA when compared to standard antioxidants (gallic acid and catechin) at approximately 3-10 ppm in IC50 values. Among the fractions separated from the methanol extracts of those parts, EtOAc soluble fractions significantly exhibited the highest AOA properties. Qualitative phytochemical tests of EtOAc soluble fractions indicated that alkaloid and tannin could contribute to the AOA results. Total phenolic contents (TPC) of each extract were also evaluated by Folin-Ciocalteu method. Both in the crude extracts and fractions stage, only weak correlation is found between the AOA and TPC levels.
Faculty of Forestry, Universitas Gadjah Mada
2012-01-29 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/3306
Jurnal Ilmu Kehutanan; Vol 6, No 1 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/3307
2017-07-09T07:28:45Z
jikfkt:ART
"140129 2014 eng "
2477-3751
0126-4451
dc
Evaluasi Kegiatan Rehabilitasi Hutan dan Lahan Menggunakan Analisa Multikriteria (Studi Kasus Di Desa Butuh Kidul Kecamatan Kalikajar, Kabupaten Wonosobo, Jawa Tengah
Jatmiko, Aris
Alumni Fakultas , Universitas Gadjah Mada, Yogyakarta
Sadono, Ronggo
Bagian Manajemen Hutan, Fakultas , Universitas Gadjah Mada, Yogyakarta
Wijayanti Faida, Lies Rahayu
Bagian Konservasi Sumberdaya Hutan, Fakultas , Universitas Gadjah Mada, Yogyakarta
Array
Rehabilitasi hutan dan lahan (RHL) merupakan upaya untuk memulihkan, mempertahankan, dan meningkatkan fungsi hutan dan lahan.Tujuan akhir program ini adalah tetap terjaganya daya dukung, produktivitas serta peranan hutan dan lahan dalam mendukung sistem penyangga kehidupan. Evaluasi RHL diperlukan dalam upaya mengetahui tingkat keberhasilan RHL, menekan risiko kegagalan dan meningkatkan kemungkinan keberhasilan. Penelitian ini bertujuan untuk menetapkan perangkat kriteria dan indikator keberhasilan RHL, serta menggunakan perangkat kriteria dan indikator tersebut untuk menilai keberhasilan RHL di Desa Butuh Kidul Kecamatan Kalikajar Kabupaten Wonosobo, Jawa Tengah. Evaluasi RHL dilakukan dengan analisis multikriteria menggunakan metode Analytical Hierarchy Processes. Proses evaluasi dimulai dari penetapan kriteria dan indikator, kemudian diikuti dengan pemberian bobot yang melibatkan pakar, masyarakat serta stakeholder. Langkah selanjutnya adalah pemberian skor pada tiap indikator; dan perhitungan skor total tingkat keberhasilan RHL di desa Butuh Kidul Kecamatan Kalikajar Kabupaten Wonosobo, Jawa Tengah. Penelitian ini menghasilkan empat kriteria yang digunakan untuk mengevaluasi kegiatan RHL yaitu kriteria prasyarat, produksi, ekologi, dan sosial ekonomi. Dari perbandingan berpasangan yang dilakukan oleh tim pakar diperoleh bobot untuk kriteria tersebut masing-masing sebesar : 0,05; 0,21; 0,43; dan 0,31. Berdasarkan bobot tersebut maka keberhasilan RHL di Desa Butuh Kidul Kecamatan Kalikajar Kabupaten Wonosobo mempunyai skor terbobotkan sebesar 0,80, dalam rentang skor 0,33-1. Persentase tingkat keberhasilan kegiatan RHL adalah sebesar 70,55 %, termasuk dalam predikat “sedang” sehingga masih perlu diadakan penyempurnaan kegiatan RHL di masa yang akan datang.
Kata Kunci : Evaluasi rehabilitasi hutan dan Lahan, analisis multikriteria, kriteria dan indikator
Evaluation using Multi-criteria Analysis of Forest and Land Rehabilitation Program in Butuh Kidul Village, Kalikajar Sub District, Wonosobo Regency, Central Java
Abstract
Forest and land rehabilitation program aims to restore, maintain, and improve forest and land function. The ultimate goal of this program is sustainability of forest-land capacity and productivity as supporting life system. Evaluation to this program is a necessity in determining the success of land and forest rehabilitation, reducing the risks and increasing the potential success. This research was carried out to set up the criteria and indicators and to test them against the performance of forest and land rehabilitation in Butuh Kidul Village, Kalikajar Sub District, Wonosobo District, Central Java. Multicriteria analysis using Analytical Hierarchy Process (AHP) was adopted in this study. Evaluation process was began by formulating a set of criteria and indicators, followed by exercising judgment and scoring by experts, people, and other stakeholders under AHP framework. The results showed that there were four key criteria to evaluate the success of Forest and Land Rehabilitation, namely: (i) prerequisite, (ii) production, (iii) ecology, and (iv) socio-economic criteria. From experts judgment comparison, the weighed preferences were, respectively : 0,05; 0,21; 0,43; and 0,31. Based on these figures, the comparative value of Forest and Land Rehabilitation in Butuh Kidul Village, Kalikajar Sub District, Wonosobo District, Central Java was 0,80 in the range of 0,33-1. The percentage of success rate was 70,55 %, or the “moderate”, indicating that RHL in this case may still be enhanced.
Faculty of Forestry, Universitas Gadjah Mada
2012-01-29 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/3307
Jurnal Ilmu Kehutanan; Vol 6, No 1 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/3310
2017-07-09T07:28:45Z
jikfkt:ART
"140129 2014 eng "
2477-3751
0126-4451
dc
Karakteristik Spektra Absorbansi NIR (Near Infra Red) Spektroskopi Kayu Acacia mangium WILLD pada 3 Umur Berbeda
Karlinasari, Lina
Fakultas Kehutanan, Institut Pertanian Bogor, Bogor
Sabed, Merry
Fakultas Kehutanan, Universitas Tanjungpura, Kalimantan Barat
J. Wistara, Nyoman
Fakultas Kehutanan, Institut Pertanian Bogor, Bogor
Purwanto, Aris
Fakultas Teknologi Pertanian, Institut Pertanian Bogor, Bogor
Wijayanto, Hari
Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Bogor
Array
Penelitian mengenai pengujian nondestruktif metode near infrared (NIR) spektroskopi di Indonesia masih sangat terbatas. Penelitian ini bertujuan untuk menentukan karakteristik spektra NIR spektroskopi (panjang gelombang 700 nm – 2500 nm) kayu Acacia mangium dari 3 umur yaitu 5, 6, dan, 7 tahun. Kayu mangium diperoleh dari daerah Maribaya, Parung Panjang, Bogor. Sampel contoh uji spektra terdiri dari bentuk solid atau padatan dan bentuk serbuk kayu. Hasil penelitian menunjukkan spektra absorban NIR sampel padatan kayu lebih tinggi dibandingkan bentuk sampel serbuk. Umur pohon untuk jenis kayu yang sama tidak memberikan informasi perbedaan pola spektra absorbansi NIR yang nyata untuk setiap lokasi panjang gelombangnya. Penelitian lebih lanjut dapat dilakukan untuk menentukan model pendugaan sifat kimia, fisis dan mekanis kayu menggunakan analisis statistik metode analisis multivariasi.
Kata kunci: NIR spektroskopi, Acacia mangium, kayu solid, serbuk kayu
Characteristics of Absorbency Spectra of NIR (Near Infra Red) Spectroscopy of Acacia mangium Willd Wood from Three Different Age
Abstract
Research on non-destructive test of near infrared (NIR) spectroscopy method was still limited in Indonesia. The aim of this study was to determine near infrared (NIR) spectroscopy (wavelength range within 780 nm -2500 nm) characteristic of wood species of Acacia mangium. The samples were selected from three different ages e.g. 5 year, 6 years, and 7 years grown in Maribaya area of Parung Panjang Distric. The NIR testing samples used were solid wood and ground wood. This study resulted that there was visually no significant difference of absorbance spectra NIR patterns based on wood ages. NIR absorbance spectra had same trend for both solid and ground wood samples in a range of wavelength, although those were in different values. The NIR absorbance spectra values of solid wood samples seemed higher than ground wood samples. Further research is needed to develop predicting model of NIR spectroscopy to determine wood properties of chemical, physical and mechanical properties using multivariate analysis method.
Faculty of Forestry, Universitas Gadjah Mada
2012-01-29 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/3310
Jurnal Ilmu Kehutanan; Vol 6, No 1 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/3312
2017-07-09T07:28:45Z
jikfkt:ART
"140129 2014 eng "
2477-3751
0126-4451
dc
Penentuan Indeks Kepadatan Tegakan Sengon di Hutan Rakyat (Kecamatan Kranggan dan Pringsurat Kabupaten Temanggung)
Sadono, Ronggo
Bagian Manajemen Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Umroni, Aziz
Alumni Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Array
Indeks kepadatan tegakan (SDI) berpengaruh pada produktifitas tegakan. Hutan rakyat memiliki karakteristik kepadatan tegakan yang berbeda dengan hutan tanaman seumur. Kajian SDI selama ini belum pernah dilakukan di hutan rakyat. Penelitian ini bertujuan untuk menentukan indeks kepadatan tegakan di hutan rakyat dengan pendekatan persamaan yang dikembangkan oleh Reineke. Sampel yang digunakan berjumlah 62 plot berdasarkan variasi kepadatan, pola pengelolaan dan kelerengan lahan. Analisis alometri digunakan untuk menggambarkan hubungan antara jumlah pohon per hektar (N/ha) dengan diameter pada rata-rata luas bidang dasar (dlbds ). Hasil penelitian menunjukkan bahwa persamaan SDI yang dikembangkan oleh Reineke dapat digunakan di hutan rakyat dengan penyesuaian nilai referensi diameter. Berdasarkan nilai koefisien alometri dan referensi diameter pada rata-rata luas bidang dasar sebesar 20 cm, maka dapat diajukan persamaan SDI untuk hutan rakyat sebagai berikut :
SDI = N (20/dlbds ) -1,153
Kata kunci: Indeks kepadatan, hutan rakyat, alometri
Determination of Sengon Stand Density Index in the Community Forests (Kranggan and Pringsurat Sub District, Temanggung District)
Abstract
Stand Density Index (SDI) reflects stand productivity. Research on density index in community forest is very rare. The objective of this research was to determine stand density index in community forest by implementing Reineke’s density index. There were 62 sample plots established representing density variation, management pattern, and land terrain. Stem diameter of saplings, poles and trees was measured in every plot. Allometry analysis was employed to draw the relation between the number of stem per hectare (N) and stem diameter at the average of basal area (dlbds ). The result showed that the Reineke’s density index could be applied with an adjustment in the reference stem diameter. Based on the accepted allometry coefficient and the minimum stem diameter at the average basal area of 20 cm, the equation of stand density index for community forest is proposed as follows:
SDI = N (20/dlbds ) -1,153
Faculty of Forestry, Universitas Gadjah Mada
2012-01-29 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/3312
Jurnal Ilmu Kehutanan; Vol 6, No 1 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/3313
2017-07-09T07:28:45Z
jikfkt:ART
"140129 2014 eng "
2477-3751
0126-4451
dc
Pengaruh Konsentrasi Asam Sitrat dan Suhu Pengempaan terhadap Kualitas Papan Partikel Pelepah Nipah
Widyorini, Ragil
Bagian Teknologi Hasil Hutan Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Prayitno, Tibertius Agus
Bagian Teknologi Hasil Hutan Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Yudha, Ari Puspa
Alumni Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Setiawan, Bhaktiar Adi
Alumni Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Wicaksono, Budi Hari
Alumni Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Array
Papan partikel tanpa perekat sintesis atau binderlessboard merupakan alternatif produk ramah lingkungan yang potensial dikembangkan di Indonesia. Kelemahan produk tersebut diantaranya adalah kestabilan dimensinya yang relatif rendah. Alternatif perbaikan produk bisa dilakukan dengan menambahkan bahan pengaktif komponen kimia. Asam sitrat memiliki tiga gugus karboksil dan diharapkan dapat membentuk ikatan ester dengan gugus hidroksil pada permukaan kayu. Penelitian menggunakan asam sitrat relatif baru dan belum banyak dikembangkan, oleh karena itu penelitian ini ditujukan untuk pengembangan produk biokomposit dengan menggunakan asam sitrat sebagai bahan pengikat. Bahan yang digunakan adalah pelepah nipah dengan ukuran partikel (halus dan kasar), konsentrasi asam sitrat (0% dan 10%), dan suhu pengempaan (180ºC dan 200°C). Pengujian sifat fisika dan mekanika dilakukan berdasarkan Japanese Industrial Standard untuk papan partikel (JIS A 5908). Penambahan asam sitrat memperlihatkan kenaikan sifat fisika (penyerapan air) dan mekanika papan partikel. Perbedaan ukuran partikel mempengaruhi sifat mekanika papan partikel dimana ukuran partikel kasar memberikan nilai mekanika yang lebih baik dibandingkan dengan ukuran partikel halus. Kualitas papan partikel optimum diperoleh pada kondisi pengempaan 180ºC, penambahan asam sitrat 10% dari partikel ukuran kasar dengan nilai pengembangan tebal 2,4%, penyerapan air 41%, kekuatan rekat internal 0,2 MPa, modulus patah 5,5 MPa, dan modulus elastisitas 1,6 GPa.
Kata kunci: asam sitrat, pelepah nipah, konsentrasi asam sitrat, suhu pengempa
Effect of Citric Acid Concentration and Pressing Temperature on the Quality of Particleboard from Nypa Frond
Abstract
Binderlessboard is one of the potential eco friendly products that can be developed in Indonesia. However, its boards usually have low in dimensional stability. Addition of the chemical agent, such as citric acid, that can improve the dimensional stability is needed. Citric acid has three hydroxyl groups that can be ester-linked with hydroxyl groups from wood. Researches on citric acid and its utilization are relatively limited. This research focused on the development of particleboard using citric acid as bonding agent. Nypa frond was used as raw material with two different sizes of particles, namely fine and coarse particles. Addition of citric acid of 10% air-dried particles was done for improving the dimensional stability. Pressing temperature was set at 180ºC dan 200°C during 15 minutes. Physical and mechanical properties were done according to Japanese Industrial Standard JIS A 5908. Addition of citric acid could improve physical and mechanical properties of the boards. Coarse particles provided the particleboards with better mechanical properties compared to fine particle. Boards that made from coarse particle and 10% citric acid at pressing temperature of 180ºC have optimum properties, i.e. thickness swelling 2.4%, water absorption 41%, internal bond strength 0.2 MPa, modulus of rupture 5.5 MPa, dan modulus of elastisity 1.6 GPa.
Faculty of Forestry, Universitas Gadjah Mada
2012-01-29 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/3313
Jurnal Ilmu Kehutanan; Vol 6, No 1 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/5735
2017-07-09T07:30:04Z
jikfkt:ART
"150122 2015 eng "
2477-3751
0126-4451
dc
Kombinasi Boraks dan Asam Borat sebagai Bahan Penghambat Api dan Antirayap Pada Kayu Meranti Merah
Santoso, Mahdi
Jurusan Kehutanan, Fakultas Pertanian Universitas Palangkaraya
Hadikusumo, Sutjipto A.
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan Universitas Gadjah Mada
Aziz, Abdul
Fakultas Kehutanan Universitas Negeri Papua
Array
Kayu mempunyai sifat yang mudah terbakar dan sebagian besar mempunyai keawetan alami yang rendah. Perbaikan kualitas kayu dilakukan untuk mengatasi kelemahan tersebut, salah satunya dengan mengimpregnasikan bahan kimia yang bersifat menghambat api dan beracun terhadap organisme perusak kayu. Tujuan penelitian ini adalah melihat kemampuan boraks:asam borat (1:1) untuk meningkatkan ketahanan kayu meranti merah terhadap api dan rayap kayu kering dan mengetahui proses pengawetan yang efektif. Penelitian ini menggunakan kayu meranti merah (Shorea spp) berukuran 6 x 15 x 500 cm. Waktu pengawetan adalah 1, 2, dan 3 jam serta konsentrasi bahan pengawet 7% dalam 5 ulangan. Metode pengawetan menggunakan metode sel kosong dengan tekanan 12 kg/cm2 . Pengujian ketahanan terhadap api mengacu pada ASTM E 69-02 prosedur B, pengujian ketahanan terhadap rayap kayu kering mengacu pada metode rayap makan tanpa pilihan. Parameter yang diamati ialah absorpsi, retensi aktual, intensitas bakar, suhu pembakaran maksimal, lama pembaraan, mortalitas rayap kayu kering, pengurangan berat contoh uji, derajat kerusakan dan kondisi fisik sampel setelah uji bakar. Hasil penelitian menunjukkan bahwa kombinasi boraks:asam borat (1:1) memiliki efektivitas yang tinggi untuk meningkatkan ketahanan kayu meranti merah terhadap api dan rayap kayu kering. Proses pengawetan yang paling efektif adalah lama penekanan 2 jam dengan absorpsi 331 kg/m3 ; retensi aktual 28,8 kg/m3 ; intensitas bakar 10,9%; suhu pembakaran maksimal 140ºC; lama pembaraan 1,03 menit; mortalitas rayap kayu kering 100%; pengurangan berat contoh uji 0,002%; serta derajat kerusakan kategori ringan.
Katakunci: penghambat api, anti rayap, boraks, Shorea spp, Cryptotermes cynocephalus
Borax and Boric Acid Combination As Fire Retardant and Anti-termite Agents on Red Meranti Wood
Abstract
Woods have properties which are easy to be ignited by fire and most of them have a low natural durability. Therefore, it is required to improve the quality of wood by impregnating the fire-retardant and anti-termites possessed chemicals. The aim of this research was to investigate the effect of impregnation duration by combination of borax:boric acid ( 1:1) against the fire and termites. This study used red meranti wood (Shorea spp) with the dimension of 6 x 15 x 500 cm. The pressure times were 1, 2, and 3 hours as the concentration of borax:boric acid was 7% in 5 replications. Empty cell method was applied as preservation method by 12 kg/cm2 of pressure. Testing the fire resistance referred ASTM E 69-02 B and anti-termite evaluation was conducted by no-choice feeding method. Observed parameters were absorption, actual retention, burn intensity, maximum combustion temperature, glowing time, termite mortality, mass loss, the degree of damage and visual observation. The results showed that the combination of borax: boric acid (1: 1) could improve the quality of red meranti samples against the fire and termite attacks. The most effective impregnation process were 2 hours of pressing time to obtain the 331 kg/ m3 of absorption; actual retention of 28.8 kg/ m3; burnt intensity of 10.9%; maximum combustion temperature of 140ºC; glowing time of 1.03 minutes, termite mortality of 100%; mass loss of 0.002%; and mild degrees of damage category.
Faculty of Forestry, Universitas Gadjah Mada
2012-07-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/5735
Jurnal Ilmu Kehutanan; Vol 6, No 2 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/5736
2017-07-09T07:30:04Z
jikfkt:ART
"150122 2015 eng "
2477-3751
0126-4451
dc
Utilization of Carbonized Wood from Tropical Fast-Growing Trees for Functional Materials
Sulistyo, Joko
Department of Forest Products Technology, Faculty of Forestry, Universitas Gadjah Mada, Yogyakarta
Hata, Toshimitsu
Research Institute for Sustainable Humanosphere, Kyoto University, Japan
Marsoem, Sri Nugroho
Department of Forest Products Technology, Faculty of Forestry, Universitas Gadjah Mada, Yogyakarta
Array
Pembangunan hutan tanaman dari jenis-jenis cepat tumbuh di kawasan tropis menimbulkan limbah biomassa kayu yang sebagian saat ini digunakan untuk kayu bakar dan sebagian lain digunakan untuk produksi arang dengan tujuan penggunaan yang terbatas. Pengembangan material-material fungsional untuk berbagai aplikasi teknik dengan memanfaatkan arang kayu dari jenis pohon cepat tumbuh harus mempertimbangkan struktur mikro dan struktur pori dalam arang kayu yang berhubungan dengan kondisi karbonisasi. Ulasan ini meliputi kemajuan penelitian-penelitian saat ini pada karbonisasi kayu dari pohon cepat tumbuh tropis, mekanisme perkembangan struktur mikro dan struktur pori dalam arang kayu selama karbonisasi, pemanfaatan yang tepat dari struktur mikro dan porositas dalam arang kayu untuk pengembangan material-material fungsional serta usaha dan peningkatan pengembangan material-material fungsional menggunakan arang kayu dari pohon cepat tumbuh tropis.
Katakunci: arang kayu, material fungsional, pohon cepat tumbuh, karbonisasi
Utilization of Carbonized Wood from Tropical Fast-Growing Trees for Functional Materials
Abstract
Establishment of fast-growing tree species plantations in tropical areas generate wood biomass residue in which some of them are currently utilized for heating fuel and some others are used for charcoal production with limited purposes. The development of functional materials for engineering applications utilizing carbonized wood from fast-growing trees species have to consider the microstructure and pore structure in carbonized wood which has a relationship to the carbonization conditions. This review covers the current researches on progress in the carbonization of wood from tropical fast-growing trees, mechanism of the microstructure and pore structure development in carbonized wood during carbonization, proper utilizations of the microstructure and porosity in carbonized wood for the development of functional materials and efforts and enhancing the development of functional materials using carbonized wood from tropical fast-growing trees.
Faculty of Forestry, Universitas Gadjah Mada
2012-07-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/5736
Jurnal Ilmu Kehutanan; Vol 6, No 2 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/5737
2017-07-09T07:30:04Z
jikfkt:ART
"150203 2015 eng "
2477-3751
0126-4451
dc
Analisis Transisi Lahan di Kabupaten Gunungkidul dengan Citra Penginderaan Jauh Multi Temporal
Wardhana, Wahyu
Bagian Manajemen Hutan, Fakultas Kehutanan UGM Yogyakarta
Mahasiswa S3 Program Studi Ilmu Lingkungan UGM
Sartohadi, Junun
Tim Promotor Program Studi Ilmu Lingkungan Pasca Sarjana UGM
Rahayu, Lies
Tim Promotor Program Studi Ilmu Lingkungan Pasca Sarjana UGM
Kurniawan, Andri
Tim Promotor Program Studi Ilmu Lingkungan Pasca Sarjana UGM
Array
Kabupaten Gunungkidul dulu terkenal tandus kering gersang pada tahun 1940-1970-an tetapi kini telah menjadi hijau kembali. Proses ini disebut dengan proses transisi. Penelitian ini memberikan bukti empirik melalui alat bantu analisis perubahan spasial dan penginderaan jauh yang hasilnya kemudian digunakan untuk memodelkan proses tahapan transisi sebagaimana model menurut Mather (1992) dan Hosunuma (2002). Tahapan transisi saat ini menurut model tersebut adalah menuju tahap akhir dari proses pertumbuhan. Yang unik dari proses transisi di wilayah ini adalah model penutupan/penggunaan lahan yang dominan dengan bentuk pemukiman/pekarangan, sawah tadah hujan dan tegalan/ladang (sesuai SNI 7645-2010). Model ini dapat dikatakan merupakan model penyusun ekosistem baru yang terjadi dalam proses transisi yang berbeda dari model penutupan sebelumnya yang berupa hutan campuran sebagaimana dijelaskan oleh Nibbering (1991). Model ini merupakan bentuk kompromi sosial-ekologis hasil proses rehabilitasi saat itu yang dilakukan baik oleh masyarakat maupun oleh Pemerintah Daerah dengan program INPRES Penghijauan dari Pemerintah Pusat saat itu. Pembelajaran yang menarik dari proses transisi adalah kembalinya lahan bervegetasi menjadi sebuah ekosistem baru di Gunungkidul melalui dominasi penutupan/penggunaan lahan pemukiman (pekarangan), sawah tadah hujan dan tegalan/ladang. Bentuk-bentuk ini merupakan proses kompromi yang menjadi faktor keberhasilan rehabilitasi yang dilakukan saat itu.
Katakunci: Gunungkidul, transisi hutan, rehabilitasi, perubahan spasial, penginderaan jauh
Analysis on the Land Transition in Gunungkidul using Multi Temporal Remote Sensing
Abstract
Gunungkidul was well known as barren area during 1940-1970 but now becomes fully vegetated. This process called the transition process. This study provided empirical evidences by spatial changes and remote sensing analysis and then the results were used for modelling of the transition phases according to Mather (1992) and Hosunuma (2002). According to the model, the current transition phase is close to the final stage of the growth process. A unique phenomenon of the transition process of re-vegetation is that the regions dominated by settlement/yard, rain fed and upland/fields (in accordance to SNI 7645-2010). This model could be categorize as model of new ecosystem in the transition process, which is different from the previous one. The previous model was in the form of mixed forest as described by Nibbering(1991). This model is a compromise form of socio-ecological aspect as a result of the rehabilitation process, which was conducted by either the public or the Local Government based on Greening Program of the Central Government according to Presidential Instruction. Interested learning from the process of re-vegetation transition is that the formations of re-vegetation lead to a new ecosystem in Gunungkidul through the dominance of settlement, rain field and upland.
Faculty of Forestry, Universitas Gadjah Mada
2012-07-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/5737
Jurnal Ilmu Kehutanan; Vol 6, No 2 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/5738
2017-07-09T07:30:04Z
jikfkt:ART
"150203 2015 eng "
2477-3751
0126-4451
dc
Perlindungan Ruang Jelajah Banteng dalam Kesenjangan Sistem Kawasan Konservasi di Kabupaten Banyuwangi Propinsi Jawa Timur
Hermawan, Muchammad Taufik Tri
Baiquni, Muhammad
Imron, Muhammad Ali
Array
Kawasan konservasi memiliki peranan yang penting dalam konservasi keanekaragaman hayati. Namun banyak keanekaragaman hayati yang belum terlindungi dalam sistem kawasan konservasi yang ada. Tulisan ini memaparkan kesenjangan sistem kawasan konservasi terhadap perlindungan ruang jelajah banteng (Bos javanicus) yang ada di wilayah Kabupaten Banyuwangi bagian selatan serta strategi untuk pemenuhannya. Penelitian dilakukan di wilayah antara kawasan Taman Nasional Meru Betiri dan Taman Nasional Alas Purwo, Kabupaten Banyuwangi, Propinsi Jawa Timur. Kajian dilakukan dengan menggunakan pendekatan analisis kesenjangan (gap analysis) yang dikembangkan oleh Scott dkk (1987). Persebaran banteng dipetakan dan ditumpang susunkan dengan kawasan konservasi yang ada menggunakan aplikasi perangkat lunak ArcGIS 10.1. Kebijakan publik dan mekanisme pasar yang terkait dengan perlindungan kawasan dan keanekaragaman hayati dikaji untuk melihat peluang bagi perlindungan ruang jelajah banteng yang tidak terlindungi dalam sistem kawasan konservasi yang ada. Ruang jelajah banteng di wilayah Banyuwangi bagian selatan mencakup juga wilayah di luar kawasan Taman Nasional Alas Purwo dan Taman Nasional Meru Betiri. Bukti kehadiran banteng dijumpai di wilayah kelola Perum Perhutani KPH Banyuwangi Selatan dan juga wilayah pemukiman masyarakat. Alokasi kawasan lindung dalam RTRW Kabupaten Banyuwangi 2012-2032 meskipun sudah merupakan perluasan dari cakupan kawasan konservasi namun masih tidak mencukupi bagi perlindungan ruang jelajah banteng di Kabupaten Banyuwangi. Upaya konservasi keanekaragaman hayati berbasis mekanisme pasar lebih berpotensi untuk melindungi penggunaan ruang jelajah banteng di kawasan antara Taman Nasional Alas Purwo dan Taman Nasional Meru Betiri.
Katakunci: Kesenjangan kawasan konservasi, ruang jelajah Banteng, Banyuwangi, Rencana Tata Ruang Wilayah, Kawasan Bernilai Konservasi Tinggi
Protection of Banteng Home-range within the Protection Areas Sistem Gaps in the Banyuwangi Regency - East Java Province
Abstract
Protected areas hold an important role in biodiversity protection. However, various biodiversity are still unprotected in the existing protected areas system. This paper explains the protected areas system gap for banteng (Bos javanicus) home range in the south area of Banyuwangi district and options of its fulfillment. This research was done in area between Meru Betiri National Park and Alas Purwo National Park, Banyuwangi District, East Java. Study was done using gap analysis, developed by Scott et al. (1987). Banteng home range area was mapped and overlayed with protected area distribution using ArcGis 10.1. Public policy and market mechanism related to area protection and biodiversity was reviewed to perceive opportunity to protect banteng home range areas outside of existing protected areas. Banteng home range also consisted area outside Alas Purwo National Park and Meru Betiri National Park. Evidence of banteng presence could be seen in KPH Banyuwangi Selatan concession and settlement area. In Banyuwangi district spatial plan of 2012-2032 protection areas allocation is advanced from the protected areas, but are still not enough to protect banteng homerange. The HCVF scheme based on market mechanism are more potential to protect banteng home range in areas between Alas Purwo National Park and Meru Betiri National Park.
Faculty of Forestry, Universitas Gadjah Mada
2012-07-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/5738
Jurnal Ilmu Kehutanan; Vol 6, No 2 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/5777
2017-07-09T07:30:04Z
jikfkt:ART
"150203 2015 eng "
2477-3751
0126-4451
dc
Prakiraan Kelayakan Finansial Pembangunan Tegakan Jati Plus PERHUTANI (JPP) di Kesatuan Pemangkuan Hutan Randublatung
Riyanto, Slamet
Array
Pasca keberhasilan penelitian dan pengujian bahan pertanaman yang dihasilkan dari pemuliaan tanaman jenis jati, Perum Perhutani telah menetapkan bahan pertanaman dengan materi genetik unggul yang disebut dengan Jati Plus Perhutani (JPP) digunakan dalam skala operasional menggantikan bahan pertanaman jati yang sudah ada sebelumnya. JPP diharapkan memiliki produktivitas lebih tinggi sehingga pada umur daur yang pendek dapat menghasilkan volume kayu yang sama dengan jati daur panjang yang selama ini menyusun tegakan. Pembangunan tegakan JPP merupakan kegiatan investasi dengan menggunakan sejumlah faktor produksi untuk menghasilkan manfaat di waktu mendatang dan oleh karenanya diperlukan evaluasi finansial untuk mengetahui apakah kegiatan tersebut memberikan harapan keuntungan komersial (commercial profitability). Penelitian ini bertujuan untuk mengevaluasi proyek pembangunan tegakan JPP dari aspek finansial dengan menggunakan model daur berkelanjutan atau yang dikenal dengan Model Faustmann atau Nilai Harapan Lahan. Panjang daur tegakan jati dianalisis pada umur 20 tahun sebagaimana rancangan JPP sebagai tanaman jati berdaur pendek. Estimasi volume kayu tebangan penjarangan dan tebangan akhir daur menggunakan rekonstruksi model pertumbuhan dan hasil tegakan jati yang dikembangkan oleh Suprijadi (2010) yaitu kemiripan model pertumbuhan JPP dengan model pada tabel tegakan jati WvW Bonita V dan model pertumbuhan jati daur pendek di Costarica yang dikembangkan oleh Perez (2005). Hasil penelitian menunjukkan bahwa pembangunan tegakan jati berdaur pendek dengan menggunakan bahan pertanaman JPP secara finansial layak untuk dilaksanakan. Nilai Harapan Lahan dari sebidang lahan yang ditanami dengan tegakan JPP adalah sebesar Rp 10.162,656/Ha. Analisis kepekaan menunjukkan bahwa profitabilitas pembangunan JPP relatif kuat terhadap perubahan yang tidak dikehendaki di masa mendatang seperti penurunan produksi, harga produk dan kenaikan biaya pembangunan tegakan.
Katakunci: jati plus Perhutani, daur pendek, keuntungan komersial, daur berkelanjutan, nilai harapan lahan
The Estimation of Financial Feasibility of the Development of Superior Teak Stand in The Forest Management Unit of Randublatung
Abstract
After the success of teak plant breeding research, Perum Perhutani had set material plantation with superior genetic called Jati Plus Perhutani (JPP) to be used in operational scale. Combined with intensively silvicultural treatment, JPP was expected and assumed to be high productivity stand so that the in the short rotation could produce the merchantable volume equal to volume of woods from long rotation teak plantation. Stand development was an investment activity by employing a number of factors of production to generate a number of benefits in the future. Therefore the financial evaluation was required to determine whether the investment could provide commercial profitability to its owner. The main objective of this study was to evaluate financial performance of development of short rotation teak stand (JPP) by using continuous rotation model called Faustmann Formula or Land Expected Value. Estimation of harvested merchantable volume from thinning and final clear cutting used growth and yield model reconstruction developed by Suprijadi (2010). The model was based on the assumption of similarity between growth and yield depicted in normal table of teak (WvW Table 1932) in site class V and growth and yield model of short rotation of teak plantation in Costarica developed by Perez (2005). The result of this study showed that plantation of the JPP was financially feasible to be implemented as indicated in the Land Expected Value of Rp 10.162.656/Ha. Sensitivity analysis also showed that the profitability of development of JPP stand relatively robust against unexpected changes in the future such as decreasing in production and price and increasing in costs. At all scenarios in the sensitivity analysis, the development of JPP stand was still feasible.
Faculty of Forestry, Universitas Gadjah Mada
2012-07-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/5777
Jurnal Ilmu Kehutanan; Vol 6, No 2 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/5778
2017-07-09T07:30:04Z
jikfkt:ART
"150203 2015 eng "
2477-3751
0126-4451
dc
Potensi Biomasa dan Simpanan Karbon Jenis-jenis Tanaman Berkayu di Hutan Rakyat Desa Nglanggeran, Gunungkidul, Daerah Istimewa Yogyakarta
Purwanto, Ris Hadi
Bagian Manajemen Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Rohman, Rohman
Bagian Manajemen Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Maryudi, Ahmad
Bagian Manajemen Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Yuwono, Teguh
Bagian Manajemen Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Permadi, Dwiko Budi
Bagian Manajemen Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Sanjaya, Makmun
Alumni Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Array
Selain menghasilkan kayu perkakas dan kayu bakar, hutan rakyat sebagaimana hutan pada umumnya juga berfungsi sebagai penyimpan karbon, sehingga memainkan peran yang sangat penting di dalam siklus karbon global (the global carbon cycle). Penelitian ini dilakukan untuk (a) mengetahui jenis-jenis tanaman berkayu mulai dari tingkat tiang (poles: D = 10 cm) di hutan rakyat Desa Nglanggeran, (b) mengetahui karakteristik pertumbuhan tanaman berkayu penyusun hutan rakyat meliputi pertumbuhan diameter batang setinggi dada, tinggi, kerapatan pohon dan luas bidang dasarnya, dan (c) mengetahui kandungan biomasa dan karbon. Hasil penelitian ini menunjukkan ada 25 jenis tanaman berkayu yang ditanam dan dikembangkan oleh masyarakat petani hutan rakyat di Desa Nglanggeran yang sebagian besar menanam dan mengembangkan jenis tanaman mahoni. Rata-rata diameter batang setinggi dada untuk jenis-jenis tanaman berkayu mulai tingkat tiang (poles: dbh = 10 cm) adalah 20,8 cm (kisaran: 17,0 - 27,3 cm), dan tinggi rata-rata 15,0 cm (kisaran: 11,6 - 20,6 cm). Jumlah pohon per hektar 162 pohon yang terdiri dari jenis mahoni (67 pohon/ha), akasia (38 pohon/ha), sonokeling (25 pohon/ha), jati (9 pohon/ha), sengon (3 pohon/ha) dan jenis lainnnya (20 pohon/ha). Rata-rata luas bidang dasar 4,918 m2 /ha. Rata-rata simpanan biomasa sebesar 38,106 ton/ha yang terdiri dari jenis mahoni 23,119 ton/ha, akasia 7,036 ton/ha, sonokeling 3,440 ton/ha, jati 1,614 ton/ha, sengon 0,464 ton/ha dan jenis lainnya 2,434 ton/ha. Bila diasumsikan 50 % berat biomasa adalah karbon maka rata-rata simpanan karbon di hutan rakyat Desa Nglanggeran sebesar 19,053 ton/ha yang terdiri dari jenis mahoni 11,560 ton/ha, akasia 3,518 ton/ha, sonokeling 1,720 ton/ha, jati 0,807 ton/ha, sengon 0,232 ton/ha dan jenis lainnya 1,217 ton/ha. Penelitian tentang potensi biomasa dan simpanan karbon hutan di hutan rakyat memberi peluang hutan rakyat dalam menyambut era perdagangan karbon.
Katakunci: potensi biomasa, simpanan karbon, jenis-jenis tanaman berkayu, hutan rakyat
Biomass Potentials and Carbon Storage of Wooden Plants in the Community Forest of Nglanggeran Village, Gunungkidul Regency, Yogyakarta
Abstract
Community forests, like any other forests, do not only produce timber and fire-woods but they also function as carbon storage, and therefor they play a very important role in the global carbon cycle. This research aims were (a) determining the types of perennial woods (diameter at breast height, D = 10 cm which grown on community forest of Ngalaggeran Village, (b) determining the growth characteristics of vegetations which make up the community forest, including diameter at breast height, height of trees, tree density and basal area, and (c) determining the biomass and carbon storage in the community forests of Nglanggeran Village.The research used the allometric method to assess the biomass of mahagony, acacia, sonokeling, teak, sengon and the others. The research result showed that there were 25 species of perennial woods, which cultivated by the community forest’s farmers in Nglanggeran Village, most of which is mahagony. The average of stem diameter at breast was 20.8 cm (range between 17.0 and 27.3 cm), and the average height was 15.0 cm (range between 11.6 and 20.6 cm). The tree density per hectare was 162, consisting mostly of mahagony (67 trees per hectare) acacia (38 trees per hectare), sonokeling (25 trees per hectare), teak (9 trees per hectare), sengon (3 trees per hectare) and the others (20 trees per hectare). The average of basal area was 4.918 m2 per hectare. The average biomass was 38.106 tons per hectare which include mahagony 23.119 tons per hectare, acacia 7.036 tons per hectare, sonokeling 3.440 tons per hectare, teak 1.614 tons per hectare, sengon 0.464 ton per hectare and others 2.434 tons per hectare. If it is assumed that 50% of biomass weight is carbon, then the average carbon storage at Nglanggeran Village community forest is 19.053 tons per hectare, which include mahagony 11.560 tons per hectare, and the others 1.217 tons per hectare. The research about forest biomass and carbon stock in a community forest provides a chance of the community forest in preparing to face the carbon trading era.
Faculty of Forestry, Universitas Gadjah Mada
2012-07-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/5778
Jurnal Ilmu Kehutanan; Vol 6, No 2 (2012)
eng
Copyright (c) 2012 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/6133
2017-07-09T07:30:40Z
jikfkt:ART
"150423 2015 eng "
2477-3751
0126-4451
dc
Perilaku dan Jelajah Harian Orangutan Sumatera (Pongo abelli Lesson, 1827) Rehabilitan di Kawasan Cagar Alam Hutan Pinus Jantho, Aceh Besar
Sofyan, Hadi
Balai Besar Konservasi Sumberdaya Alam Aceh
Pudyatmoko, Satyawan
Fakultas Kehutanan Universitas Gadjah Mada
Imron, Muhammad Ali
Fakultas Kehutanan Universitas Gadjah Mada
Array
Mekanisme adaptasi dari Orangutan Sumatera yang direintroduksi merupakan informasi yang sangat penting bagi kesuksesan program rehabilitasi. Tujuan utama penelitian ini untuk mengeksplorasi perilaku dan jelajah harian dari Orangutan Sumatera rehabilitan di stasiun reintroduksi Orangutan Sumatera kawasan Cagar Alam Hutan Pinus Jantho, Aceh Besar. Metode yang digunakan adalah Instantaneous sampling. Data perilaku dalam penelitian ini dikelompokkan berdasarkan ethogram yang mengadopsi dari Standar Pengambilan Data Orangutan. Perilaku harian yang dilakukan Orangutan Sumatera rehabilitan meliputi tiga perilaku utama yaitu istirahat (47,32 %), makan (37 %), bergerak (14,75 %), sosial (0,52 %) dan bersarang (0,41 %). Sebagian besar perilaku Orangutan rehabilitan tidak menunjukkan perbedaan berdasarkan jenis kelamin dan masa reintroduksi. Rata-rata daya jelajah hariannya dari semua individu Orangutan yang diamati berkisar antara 0,7 sampai 26,2 ha. Interaksi dengan manusia pada masa sebelumnya, khususnya pada periode perkembangan Orangutan, dapat mempengaruhi perilaku Orangutan dan mungkin dapat mempengaruhi kesuksesan dalam beradaptasi dengan kondisi di alam.
Katakunci: perilaku, Orangutan, daya jelajah harian, cagar alam Jantho
Daily Behavior and Range of Rehabilitated Orangutan in the Hutan Pinus Jantho Nature Reserve, Aceh Besar
Abstract
Adaptation mechanism of reintroduced Sumatran Orangutan is crucial information for successful rehabilitation program. The main objective of this research was to investigate daily behaviors and range of
eight rehabilitated Orangutans in the reintroduction station of Nature Reserve Pine Forest Jantho, Aceh Besar. Data collection was conducted through instantaneous sampling to explore daily behavior and range. The daily activities data were grouped based on ethogram by adopting the standard of Orangutan‘s data collection. The result showed that the proportion of daily behavior of Orangutan Sumatera are 47.32 % resting, 37 % feeding, 14.75 % moving, 0.52 % social interaction and 0.41% nesting activities. There was no different behavior between sex classes and duration of rehabilitation. The average daily range of all focal individuals is 0.7-26.2 ha. Previous interaction with humans, especially during early developmental period, may affect in behaviour of rehabilitated Orangutan Sumatera and probably also influence the adaptation success in the wild.
Faculty of Forestry, Universitas Gadjah Mada
2013-01-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/6133
Jurnal Ilmu Kehutanan; Vol 7, No 1 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/6134
2017-07-09T07:30:40Z
jikfkt:ART
"150423 2015 eng "
2477-3751
0126-4451
dc
Akumulasi dan Distribusi Logam Berat pada Vegetasi Mangrove di Pesisir Sulawesi Selatan
Setiawan, Heru
Balai Penelitian Kehutanan Makassar
Array
Tumbuhan mangrove mempunyai fungsi ekologis yaitu dapat menyerap, mengangkut dan menimbun materi yang bersifat toksik yang berasal dari sekitar lingkungan tempat tumbuhnya, salah satunya adalah logam berat. Penelitian ini bertujuan untuk mengetahui akumulasi dan distribusi logam berat jenis Timbal (Pb), Tembaga (Cu) dan Kadmium (Cd) pada vegetasi mangrove di perairan pesisir Sulawesi Selatan. Sampel vegetasi mangrove diambil dari empat lokasi, yaitu sekitar Pantai Tanjung Bunga Makassar, Muara Sungai Tallo Makassar, Teluk Pare-Pare dan Teluk Bone. Distribusi logam berat pada vegetasi mangrove dibagi dalam lima jaringan yaitu, akar napas, akar kawat, daun muda, daun tua dan ranting. Kandungan logam berat dalam sampel diukur dengan menggunakan alat Atomic Absorption Spectrophotometric(AAS). Hasil penelitian menunjukkan, akumulasi Pb terbesar berasal dari sampel vegetasi mangrove di Muara Sungai Tallo yaitu 36,1 ppm, akumulasi Cu terbesar dari Pantai Tanjung Bunga Makassar 42,8 ppm, dan akumulasi Cd terbesar dari Muara Sungai Tallo yaitu 29,3 ppm. Distribusi logam berat pada jaringan vegetasi mangrove yang paling tinggi, untuk Pb terdapat pada akar kawat yaitu 9,5 ppm, akumulasi logam berat Cd tertinggi terdapat pada jaringan daun muda yaitu 3,1 ppm, sedangkan akumulasi logam berat Cu yang tertinggi terdapat pada jaringan akar kawat yaitu 10,1 ppm. Secara umum, jenis Api-api (Avicennia marina) merupakan jenis mangrove yang paling besar menyerap logam berat dengan kandungan Pb sebesar 24,2 ppm, Cd sebesar 30, 9 ppm dan Cu sebesar 71,2 ppm.
Katakunci: logam berat, mangrove, perairan pesisir, Sulawesi Selatan
Accumulation and Distribution of Heavy Metals in Mangrove Vegetation of the Coastal of South Sulawesi
Abstract
Mangroves have ecological functions to absorb, transport and stockpile toxic materials, e.g., heavy metal from surrounding environment. This research aimed to know the accumulation and distribution of heavy metals, i.e. Lead (Pb), Cuprum (Cu) and Cadmium (Cd) in mangrove vegetation of South Sulawesi. Vegetation samples were collected from four research location, which were Tanjung Bunga Makassar, Tallo River Makassar, Pare-Pare Bay and Bone Bay. Distribution of heavy metals in mangrove tissues was devided into five areas: pneumatophora, cable root, young leaves, old leaves and twig. Heavy metal content in the samples was measured using Atomic Absorption Spectrophotometric (AAS). The results showed that the highest accumulation of Pb was derived from the sample in Tallo River with 36.1 ppm. The highest accumulation of Cu was derived from Tanjung Bunga Makassar with 42.8 ppm. The highest accumulation of Cd was derived from Tallo River with 29.3 ppm. The distribution of heavy metals in mangrove showed that the highest accumulation of Pb was found in the cable roots with 9.5 ppm. The highest concentration of Cd was found in the young leaf with 3.1 ppm. The highest concentration of Cu was found in the cable roots with 10.1 ppm. Generally, Avicennia marina is mangrove species that has the highest concentration of heavy metals with Pb 24.2 ppm, Cd 30.9 ppm and Cu 71.2 ppm.
Faculty of Forestry, Universitas Gadjah Mada
2013-01-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/6134
Jurnal Ilmu Kehutanan; Vol 7, No 1 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/6135
2017-07-09T07:30:40Z
jikfkt:ART
"150423 2015 eng "
2477-3751
0126-4451
dc
Studi Vegetasi dan Cadangan Karbon di Kawasan Hutan dengan Tujuan Khusus (KHDTK) Senaru, Bayan Lombok Utara
Idris, Muhamad Husni
Program Studi Kehutanan Universitas Mataram
Latifah, Sitti
Program Studi Kehutanan Universitas Mataram
Lesmono Aji, Irwan Mahakam
Program Studi Kehutanan Universitas Mataram
Wahyuningsih, Endah
Program Studi Kehutanan Universitas Mataram
Indriyatno, Indriyatno
Program Studi Kehutanan Universitas Mataram
Ningsih, Rima Vera
Program Studi Kehutanan Universitas Mataram
Array
Penelitian pada Kawasan Hutan Dengan Tujuan Khusus (KHDTK) (Hutan Pendidikan) ± 225,7 ha di Desa Senaru, Kabupaten Lombok Utara bertujuan untuk mengetahui potensi vegetasi dan cadangan karbon tersimpan. Tutupan alami KHDTK Senaru berubah akibat pemanfaatan kayu 1993, penanaman sengon dan mahoni 1996, penanaman gaharu 1998-2001, dan saat ini pemanfaatan dengan sistem agroforestri. Populasi dalam penelitian ini adalah areal KHDTK Senaru yang dikelola intensif oleh masyarakat (± 120 ha), yang ditentukan secara sengaja. Sampel dengan intensitas 1% dan terbagi dalam 30 plot ukuran 20x20 m ditentukan secara random sampling. Analisis data meliputi analisis vegetasi, cadangan karbon atas permukaan tanah dan karbon tanah. Hasil penelitian menunjukkan bahwa terdapat 32 spesies. Pada tingkat semai, pancang, tiang dan pohon ditemukan masing-masing 10, 8, 17 dan 20 spesies. Dua spesies dengan Index Nilai Penting (INP) tertinggi untuk semai dan pancang adalah kopi dan kakao, dengan INP pada tingkat semai sebesar 120,3 dan 34,2 dan pada tingkat pancang sebesar 146,1 dan 92,5. Dadap dan sengon memiliki INP tertinggi pada tingkat tiang dan pohon, dengan INP pada tingkat tiang sebesar 77,9 dan 48,7, dan pada tingkat pohon sebesar 87,1 dan 79,9. Cadangan karbon rata-rata 126,41 ton/ha, yang terdiri atas karbon tingkat pancang (3,36 ton C/ha), tiang (9,32 ton C/ha), pohon (70,61 ton C/ha), tumbuhan bawah tegakan (0,13 ton C/ha), seresah (0,29 ton C/ha) dan tanah (42,7 ton C/ha). Hasil penelitian dapat menjadi masukan dalam pengembangan model pengelolaan KHDTK Senaru dan bahan evaluasi di masa mendatang, dan secara umum dapat menambah informasi sumberdaya hutan yang sudah ada saat ini.
Katakunci: hutan, vegetasi, cadangan karbon, Senaru Lombok
A Study on the Vegetation and Carbon Stocks of the Special Purpose Forest (KHDTK) of Senaru Village, Northern Lombok
Abstract
Study was conducted in Forest for Special Purpose (Education Forest) ±225.7 ha in Senaru Village, North Lombok. The study was aimed to determine the potential of vegetation and carbon stocks. Land cover of study area was changed due to the timber management in 1993, planting mahogany and sengon in 1996, planting Aquilaria spin 1998-2001, and currently the implementation of agroforestry. Population for this study was the area of education forest intensively utilized by farmer (±120 ha). Sampling was determined by means of random with the intensity of 1% and distributed into 30 plots of 20x20m. Data analysis included analysis of vegetation, above ground carbon and soil carbon stock. The result shows that 32 species were found. There were 10, 8, 17 and 20 species of vegetation for seedlings, saplings, poles and trees, respectively. The first two highest Important Value Index (IVI) for seedling and saplings were Coffea sp and Theobroma sp, where the IVI for seedling was 120.3 and 34.2, while for saplings were 146.1 and 92.5. Erytrhina sp and Pharaseriantes sp were the two highest IVI for poles and trees, where the IVI for poles was 77.9 and 48.7, while for trees was 87.1 and 79.9, respectively. Carbon stock of study area was 126.41 ton C/ha, which was differentiated into carbon stock for saplings (3.36 ton C/ha), pole (9.32 ton C/ha), trees (70.61 ton C/ha), understory (0.13 ton C/ha), litter (0.29 ton C/ha) and soil (42.7 ton C/ha). The results of this study could be an input in develoving a model of Senaru educational forest as wells as future evaluation. Besides, it could enrich the existing information about forest resources.
Faculty of Forestry, Universitas Gadjah Mada
2013-01-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/6135
Jurnal Ilmu Kehutanan; Vol 7, No 1 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/6136
2017-07-09T07:30:40Z
jikfkt:ART
"150423 2015 eng "
2477-3751
0126-4451
dc
Pemilihan Jenis Pohon untuk Pengembangan Hutan Kota di Kawasan Perkotaan Yogyakarta
Mukhlison, Mukhlison
Fakultas Kehutanan Universitas Gadjah Mada
Array
Hutan kota memiliki beberapa manfaat, di antaranya adalah meningkatkan kualitas udara di wilayah perkotaan dan keindahan. Pemilihan jenis pohon yang tepat guna pengembangan hutan kota akan mendukung fungsi hutan kota untuk mengurangi pencemaran di wilayah perkotaan. Penelitian ini bertujuan untuk (1) mengetahui tipe hutan kota dan jenis pohon penyusunnya, (2) mengevaluasi kecocokan jenis pohon penyusun hutan kota, dan (3) menyusun arahan pemilihan jenis pohon yang memiliki kesesuaian tempat tumbuh dan efektif dalam pengendalian pencemaran udara. Penelitian ini menggunakan metode survei dan identifikasi untuk mengetahui tipe hutan kota dan jenis pohon penyusunnya. Penilaian kecocokan jenis pohon didasarkan tempat tumbuh dan studi pustaka. Hasil penelitian menunjukkan bahwa tipe hutan kota di Kawasan Perkotaan Yogyakarta adalah konservasi jenis, rekreasi dan perlindungan dengan bentuk mengelompok dan jalur. Jenis pohon penyusun hutan kota di Kawasan Perkotaan Yogyakarta terdiri atas 112 jenis, 70 jenis di antaranya sesuai dengan persyaratan silvikultural, manajemen dan estetika, sementara terdapat 22 jenis pohon yang memiliki kesesuaian tempat tumbuh dan efektif dalam mengendalikan pencemaran udara.
Katakunci: hutan kota, pemilihan jenis pohon, pencemaran udara, Kota Yogyakarta
Tree Species Selection for Urban Forest Development in Yogyakarta City
Abstract
Urban forest provides two important services for humans i.e., improving air quality and aesthetics. Therefore, tree species selection should consider tolerance of trees to pollutants in urban areas and aesthetic point of view. The aims were to (1) determine the typology of the urban forest and its constituent species, (2) to evaluate the suitability of tree species in the urban forest, and (3) to develop guidance for selection of tree species that based on habitat suitability and and effective to control air pollution. A survey method by identification typology of the urban forest and forest tree species was carried out in Yogyakarta city. The suitability of each tree species in the urban forest was assessed by habitat evaluation and from literature study. The results show that urban forest types in Yogyakarta consist of species conservation, recreation, and protection. The shapes of the urban forest are clumped and lines. There are 112 tree species, which are 70 species fulfill the requirement of for silviculture, management and aesthetics and 22 species met the habitat suitability and effectivness to control air pollution.
Faculty of Forestry, Universitas Gadjah Mada
2013-01-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/6136
Jurnal Ilmu Kehutanan; Vol 7, No 1 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/6137
2017-07-09T07:30:40Z
jikfkt:ART
"150423 2015 eng "
2477-3751
0126-4451
dc
Uji Ekstrak Etanol Kumis Kucing (Orthosiphon sp.) sebagai Pengawet Alami Kayu
Azis, Abdul
Jurusan Kehutanan Fakultas Kehutanan Universitas Negeri Papua
Prayitno, T.A.
Bagian Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada
Hadikusumo, Sutjipto A
Bagian Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada
Santoso, Mahdi
Jurusan Kehutanan Fakultas Pertanian Universitas Palangka Raya
Array
Pemanfaatan tumbuhan belum banyak dilakukan sebagai bahan alami pengawet kayu padahal jumlah dan jenisnya cukup melimpah. Penelitian ini bertujuan untuk mengetahui efektifitas ekstrak etanol tumbuhan kumis kucing (Orthosiphon sp.) pada konsentrasi ekstrak terhadap pelarut 1:12, 1:8 dan 1:4 terhadap mortalitas rayap kayu kering (Cryptotermes sp.), pengurangan berat dan derajat kerusakan contoh uji (kertas saring) dalam rangka aplikasinya sebagai pengawet alami kayu. Penelitian dilakukan dengan mengimpregnasi ekstrak etanol campuran daun dan ranting kumis kucing pada kertas saring lalu diumpankan pada rayap kayu kering. Data penelitian dianalisis dengan analisis varian. Analisis varian menunjukkan bahwa perlakuan konsentrasi berpengaruh sangat nyata terhadap mortalitas rayap kayu kering. Hasil penelitian menunjukkan bahwa ekstrak etanol kumis kucing pada konsentrasi 1:4 menunjukkan efektifitas paling tinggi (mortalitas rayap kayu kering sebesar 65 % dan pengurangan berat contoh uji 2,71 %) dan terendah ditunjukkan oleh kontrol atau konsentrasi 0 (mortalitas rayap sebesar 1 % dan pengurangan berat 37,86 %). Konsentrasi ekstrak juga mempengaruhi besar derajat kerusakan. Semakin tinggi konsentrasi maka semakin rendah derajat kerusakan yang terjadi. Derajat kerusakan pada perlakuan dengan konsentrasi terendah (1:12) hingga tertinggi (1:4), serangan rayapnya dapat digolongkan sebagai berat hingga ringan. Ekstrak etanol tumbuhan kumis kucing konsentrasi 1:4 berpotensi sebagai bahan alami pengawet kayu karena dapat mengurangi degradasi bahan selulosa oleh rayap kayu kering.
Katakunci: Orthosiphon sp., Cryptotermes sp., ekstrak daun, anti rayap, pengawet alami.
Ethanol Extracts Test of Kumis Kucing (Orthosiphon sp.) Leaves as Natural Preservative of Wood
Abstract
The utilization of plants as a natural preservative agent of wood has not much been explored although the amount and kind of plants are relatively abundant. This study aims to determine the effectiveness of the extract of kumis kucing (Orthosiphon sp.) plant at the extract concentration to solvent of 1:12 , 1:8 and 1:4 against the dry wood termites (Cryptotermes sp.). The tested parameters were termite mortality, mass loss, and degree of damage of the test samples (filter paper). Research was carried out by impregnating the ethanol extract of the leaves and twigs mixtures in the filter papers and then the papers were fed to dry-wood termites. Data were analyzed by analysis of variance. The analysis of variance showed that treatment concentration has a highly significant effect to the mortality levels of the termites. Further, at the concentration of 1:4, the extract exhibited the highest efficacy (mortality of 65 % and mass loss of 2.71 %) and the lowest levels were shown by the controls or 0 (zero) concentration (mortality of 1 % and mass loss of 37.86 %). The concentration of the extract also affected the degree of damage. The higher the concentration, the lower the degree of damage that occurred. The degree of damage due to termite attacks at the treatment from the lowest (1:12) to the highest (1:4) concentration could be classified as heavy to light. Thus, ethanol extract of the kumis kucing at concentration of 1:4 is potent for wood preservatives because it could reduce the degradation of cellulosic materials due to dry wood termites.
Faculty of Forestry, Universitas Gadjah Mada
2013-01-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/6137
Jurnal Ilmu Kehutanan; Vol 7, No 1 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/6138
2017-07-09T07:30:40Z
jikfkt:ART
"150423 2015 eng "
2477-3751
0126-4451
dc
Studi Komponen Kimia Kayu Eucalyptus pellita F. Muell dari Pohon Plus Hasil Uji Keturunan Generasi Kedua di Wonogiri, Jawa Tengah
Fatimah, Siti
Bagian Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada
Susanto, Mudji
Balai Besar Penelitian Bioteknologi dan Pemuliaan Tanaman Hutan Yogyakarta
Lukmandaru, Ganis
Bagian Teknologi Hasil Hutan Fakultas Kehutanan Universitas Gadjah Mada
Array
Eucalyptus pellita F. Muell (E. pellita) merupakan salah satu jenis tanaman cepat tumbuh yang sedang dikembangkan melalui program pemuliaan. Pengembangan jenis ini sudah memberikan hasil yang cukup memuaskan dari sifat pertumbuhan genetika pada uji keturunan generasi pertama dan kedua. Penelitian ini bertujuan untuk mengetahui kandungan kimia kayu, mengelompokkan dan memeringkatkan pohon plus berdasarkan komponen kimia untuk mendukung program pengembangan uji keturunan generasi berikutnya, khususnya kayu untuk pulp dan kertas. Bahan yang digunakan adalah sampel yang berasal dari 61 pohon plus E. pellita umur 9 tahun yang ditanam di uji keturunan generasi kedua Wonogiri dan berasal dari 6 provenan berbeda. Pengambilan sampel dilakukan dengan sistem bor riap pada pangkal pohon setinggi 90 cm dari permukaan tanah. Hasil bor riap digiling hingga diperoleh serbuk kayu dengan ukuran 40-60 mesh. Pengujian sifat kimia kayu mengacu pada standar ASTM. Pengujian tersebut mencakup kadar ekstraktif etanol-toluena dan air panas melalui ekstraksi berurutan, kemudian kadar holoselulosa, alfa-selulosa dan lignin. Analisis data menggunakan analisis deskriptif dan gerombol. Hasil analisis menunjukkan kisaran kadar ekstraktif etanol-toluena dan air panas secara berurutan adalah 1,87 - 10,92 % dan 0,64 - 10,00 %. Kisaran kadar holoselulosa, alfa-selulosa dan lignin adalah 72,89 - 79,91 %, 41,84 - 54,85 % dan 22,12 - 36,61% secara berurutan. Koefisien variasi yang tinggi diamati pada parameter kadar ekstraktif (30,78 - 82,91 %). Berdasarkan hasil pemeringkatan sederhana yang dilakukan melalui analisis deskriptif dan gerombol diperoleh 13 individu pohon plus terbaik sebagai bahan baku pulp.
Katakunci: Eucalyptus pellita, kimia kayu, selulosa, analisis gerombol, seleksi pohon
A Study on Chemical Composition of Eucalyptus pellita F. Muell Wood from Progeny Test Second Generation Tree in Wonogiri, Central Java
Abstract
Eucalyptus pellita F. Muell (E. pellita) is one of the fast growing species, which is being developed through tree breeding program. The development of this species had produced good results in the genetic growth characteristics in the first and second generation of progeny trials. The objectives of this research were determining the variation of wood chemical components, clustering and rating the plus trees to support the development program in next generation of the progeny trial, especially in pulp and paper purposes. The materials were the 61 plus trees of E. pellita trees 9-years-old from second generation of progeny trial, Wonogiri in six different provenances. The sampling used the increment borer system at 90 cm from the surface. Materials from the increment borer were milled to 40 - 60 mesh of wood powder. The wood chemical properties were tested according to ASTM standards. It included ethanol-toluene and hot-water solubles by sequential extraction as well as holocellulose, alpha-cellulose and lignin contents. Data analysis used descriptive and clustering analysis. The results showed that the range values of ethanol-toluene extractives and hot water content respectively were 1.87 - 10.92 % and 0.64 - 10.00 %. The range values of holocellulose, alpha-cellulose and lignin contents were 72.89 - 79.91 %, 41.84 - 54.85 % and 22.12 - 36.61 %, respectively. The high values of coefficient of variation were observed in extractive content levels (30,78 - 82,91 %). Based on the simple rating, which was resulted from descriptive and cluster analysis, it gave the best 13 individuals of plus trees for pulp and paper purposes.
Faculty of Forestry, Universitas Gadjah Mada
2013-01-03 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/6138
Jurnal Ilmu Kehutanan; Vol 7, No 1 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:ojs.journal.ugm.ac.id:article/6665
2015-09-03T05:33:06Z
jikfkt:ART
oai:jurnal.ugm.ac.id:article/7514
2017-09-03T07:31:03Z
jikfkt:ART
"130708 2013 eng "
2477-3751
0126-4451
dc
Kandungan Unsur Hara Daun Pinus Merkusi Jungh. et de Vriese dan Sifat-sifat Tanah di Tegakan dengan Produksi Getah yang Bervariasi
Supriyo, Haryono
Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Prehaten, Daryono
Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Array
Secara ekonomi, peranan tegakan Pinus dari tahun ke tahun meningkat dari nilai getahnya dan telah menjadi produk unggulan di Perum PERHUTANI. Di beberapa KPH produksi getah antara petak satu dengan petak lainnya mempunyai variasi yang cukup besar, padahal berasal dari bibit yang sama. Penelitian ini bertujuan untuk mencari sifat tanah dan iklimnya yang berakibat pada kandungan hara daun yang diduga sebagai penyebab perbedaan produksi getah. Penelitian dilakukan di Ngablak dengan produksi getah rendah (<4 g/pohon/3 hari), sehingga sudah tidak disadap lagi dan RPH Grabag dengan produksi getah lebih tinggi (<4 g/pohon/3 hari), sehingga sudah tidak disadap lagi dan RPH Grabag dengan produksi getah lebih tinggi (>>15 g/pohon/3 hari), kedua RPH terletak di KPH Kedu Utara. Penelitian dilakukan dengan membuat profil tanah pada masing-masing petak dengan 3 ulangan. Sampel daun segar diambil dengan memanjat pohon dengan memotong rantingnya, daun dan dianalisis unsur hara makro dan mikro. Hasil menunjukkan bahwa pada pinus di Ngablak terletak pada elevasi rata-rata 1.213 m dpl dan di Grabag pada elevasi 908 m dpl. Ketebalan solum di Ngablak hanya 60 cm, warna tanahnya lebih cerah (yellowish red) dan di dalam profil tanah terdapat banyak batu-batu yang keras, sedangkan di Grabag mempunyai solum > 90 cm, warna tanah lebih kelam (dark brown) dan tidak ada bahan kasar di dalamnya. Biomassa sersah, tinggi dan diameter di Ngablak hanya 1.317 ton/ha, 19,3 m dan 20,8 cm, sedangkan di Grabag 6.857 ton/ ha, 31,6 m dan 20,8 cm. Kandungan Mg dan Mn di Ngablak 0,14 ppm dan 86 ppm, sedangkan di Grabag 0,27 ppm dan 283 ppm. Kandungan unsur hara C, N, P, K, Ca, Na, Fe, Cu dan Zn relatif tidak begitu berbeda.
Katakunci: Pinus merkusii, produksi getah, unsur hara, elevasi, sifat tanah
Nutrient Content of Pinus merkusi Jungh. et de Vriese Leaf and Its Soil Properties under Varied Resin Production Levels of Stands
Abstract
Economically, the role of pine stands increased because of the value of the resin. The resin has been a flagship product of Perum PERHUTANI. In some areas, resin production varied among compartments. The variation is quite large even the trees were from the same seed origins. This study aimed to study the soil properties and climate, which results in variation of leaf nutrient content. Those were predicted as the cause of differences in the production of resin. The study was conducted in both RPH Ngablak (lower resin production, (<4 g/tree/3 d) and RPH Grabag (higher resin production, (>15 g/tree/3 d), which are located in KPH Kedu Utara. Soil samples were taken in each compartment with three replications. Fresh leaf samples were collected and analyzed for the macro and micro nutrients. The results showed that the pine in Ngablak lies at an elevation of about 1,213 m, while in Grabag it lies on 908 m above sea level. The thickness of the soil’s solum in Ngablak was only 60 cm. The soil was brighter in colors (yellowish red) and many hard stones were found in soil’s profile. Whereas in Grabag the solum was > 90 cm, dark in color (dark brown) and no coarse material in the soil’s profile. Litter biomass, trees height and diameter in Ngablak were only 1,317 tons/ha, 19.3 m and 20.8 cm, respectively. While in Grabag, the litter biomass, trees height and diameter were accounted for 6,857 tons/ha, 31.6 m and 20.8 cm, respectively. The leaf content of Mg and Mn in Ngablak were 0.14 ppm and 86 ppm, respectively, while in Grabag were accounted for 0.27 ppm and 283 ppm, respectively. Nutrient content of C, N, P, K, Ca, Na, Fe, Cu and Zn in both areas were no significant different.
Faculty of Forestry, Universitas Gadjah Mada
2013-07-08 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/7514
Jurnal Ilmu Kehutanan; Vol 7, No 2 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/7515
2017-09-27T03:08:40Z
jikfkt:ART
"130708 2013 eng "
2477-3751
0126-4451
dc
Normalitas Tegakan Berbasis Resiko untuk Pengaturan Kelestarian Hasil Hutan Tanaman Jati di Perum Perhutani
Rohman, Rohman
Jurusan Manajemen Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Warsito, Sofyan P
Jurusan Manajemen Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Purwanto, Ris Hadi
Jurusan Manajemen Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Supriyatno, Nunuk
Jurusan Manajemen Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
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Hutan tanaman jati yang dikelola oleh Perum Perhutani, dalam berbagai keadaan termasuk kondisi yang relatif aman, selalu memiliki resiko kerusakan yang menyebabkan menurunnya kualitas kelas hutan produktif ke arah tidak produktif. Penelitian ini bertujuan untuk mengetahui standar kenormalan hutan tanaman jati yang mempertimbangkan resiko kerusakan sebagai dasar pengaturan kelestarian hasil. Penelitian ini dilaksanakan di KPH Randublatung Perum Perhutani Divisi Regional Jawa Tengah. Resiko kerusakan (casualty per cent) didekati dari angka kerusakan tegakan berdasarkan data seri selama 4 jangka perencanaan mulai jangka 1983/1992 sampai jangka 2013/2022. Normalitas tegakan didekati dari luas tegakan yang harus dibangun, sedemikian sehingga diperoleh hasil tahunan yang realtif sama dengan mempertimbangkan casualty per cent. Hasil penelitian menunjukkan bahwa luas hutan normal ideal tanpa mempertimbangkan resiko kerusakan di KPH Randublatung dengan luas untuk produksi 27.359,4 ha dan daur 60 tahun adalah sebesar 456,0 ha per tahun. Dengan mempertimbangkan casualty per cent, luas hutan normal berbasis resiko di KPH Randublatung sebesar 229,5 ha per tahun atau 50,3% dari luas normal ideal. Untuk memperoleh hasil tahunan yang realtif sama seluas 229,5 ha, struktur luas hutan yang harus dibangun mulai KU I, KU II, KU III, KU IV, KU V, dan KU VI berturut-turut sebesar 6.875 ha; 5.784 ha; 4.711 ha; 3.997 ha; 3.232 ha dan 2.761 ha.
Katakunci: casualty per cent, hutan normal, Perum Perhutani, hutan tanaman jati
Risks-based Stand Normality for Sustainable Yield Forest Plantation in Perum Perhutani
Abstract
In any situation, either secure or insecure, teak forest plantations encounter high risks due to ecological and social disturbances, causing degradation and decrease their normality in terms of areas and standing stock. This research aimed to determine the normality standard of teak forest plantations under risks as a basis for better sustained yield regulation. This research was conducted in forest management unit (FMU) of Randublatung, state-owned forest company (Perhutani), located at Central Java. The risk of forest damages, called casualty per cent, was calculated using a series of age class structures based on a 10-year periodic forest inventory for four sequential planning periods:1983/1992, 1993/2002, 2003/2012,to 2013/2022. The normal forest was determined based on the stands area basis, which was defined based on the final cutting area that already incorporates casualty per cent, in such a way that each year the newly planted forests areas have relatively the same number. The results showed that without casualty per cent, the normal forest built every year in FMU Randublatung was 456 ha/year for a 60-year rotation cycle. However, by incorporating the damage risks (casualty per cent), the normal forest area in KPH Randublatung should be built only 229.5 ha/year or just 50.3% of the current planning. Furthermore, in order to obtain this annual harvesting, the normal forests should have age classes structures from age class I, II, III, IV, V, and VI, in such a way that their areas equal to 6,875 ha, 5,784 ha, 4,711 ha, 3,997 ha, 3,232 ha, and 2,761 ha, respectively.
Faculty of Forestry, Universitas Gadjah Mada
2013-07-08 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/7515
Jurnal Ilmu Kehutanan; Vol 7, No 2 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/7516
2017-09-03T07:09:14Z
jikfkt:ART
"130708 2013 eng "
2477-3751
0126-4451
dc
Pengawetan Kayu Gubal Jati Secara Rendaman Dingin dengan Pengawet Boron untuk Mencegah Serangan Rayap Kayu Kering (Cryptotermes cynocephalus Light.)
Sumaryanto, Afif
Alumni Fakultas Kehutanan Universitas Gadjah Mada
Hadikusumo, Sutjipto Achmad
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Lukmandaru, Ganis
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Array
Pada penggunaan kayu jati umur muda, umum diketahui bahwa bagian gubal banyak diserang oleh rayap kayu kering karena keawetan alaminya yang rendah. Asam borat dan boraks merupakan salah satu pengawet yang mengandung bahan aktif boron yang murah, mudah didapat, tidak berbau, dan tidak mengubah warna kayu. Bahan yang digunakan adalah bagian gubal papan jati yang diperoleh dari tebangan jati hutan rakyat di Kecamatan Kali Bawang, Kulon Progo. Penelitian ini menggunakan rancangan acak lengkap yang disusun secara faktorial dengan dua faktor yaitu faktor jenis bahan pengawet yaitu asam borat dan boraks (konsentrasi 5 %) dan faktor lama perendaman (12, 24, 36, dan 48 jam). Rayap yang digunakan untuk pengujian keawetan contoh uji pada penelitian ini adalah rayap kayu kering (Cryptotermes cynocephalus Light.) Hasil penelitian menunjukkan kisaran hasil rerata nilai pada parameter absorbsi sebesar 33,09 – 70,77 kg/m3 , nilai retensi sebesar 3,81 – 10,77 kg/m3 , kedalaman penetrasi 2,34 – 3,86 mm, mortalitas rayap sebesar 46,33 – 53 % selama 2 minggu dan 82,67 – 94,33 % selama 4 minggu pengumpanan, pengurangan berat sampel sebesar 0,56 – 0,57 gram, serta derajat kerusakan sebesar 30,34 – 31,27 %. Hasil analisis sidik ragam menunjukkan bahwa terdapat interaksi antara faktor jenis bahan pengawet dan lama perendaman yang berpengaruh nyata terhadap mortalitas rayap. Faktor jenis bahan pengawet berbeda sangat nyata terhadap absorbsi dan penetrasi. Faktor lama perendaman berbeda sangat nyata terhadap absorbsi, retensi, penetrasi. Pemberian bahan pengawet mampu mengurangi kehilangan berat sampai sekitar 70 % serta memberi persentase kematian rayap yang lebih tinggi (87-92 %) dibandingkan gubal tanpa perlakuan.
Katakunci: Tectona grandis L.f., gubal, pengawetan kayu, boraks, rendaman dingin, Cryptotermes cynocephalus Light
Preservation of Teak Sapwood by Cold Soaking Using Boron Against Drywood Termite (Cryptotermes cynocephalus Light.) Attacks.
Abstract
The utilization of younger teakwood has a disadvantage, which is the sapwood is more susceptible to dry wood termites as it has less natural durability. Boric acid and borax are inexpensive preservatives, which contain boron as the active material. Those preservatives are also easy to be obtained as well as do not produce smells and the wood discoloration. The experiment materials were the sapwood parts from teak boards obtained from the felled trees in the community forest of Kali Bawang, Kulon Progo. A complete randomized block design was arranged in a factorial with two factors, which were the type of preservatives (boric acid and borax in 5% concentration) and duration of cold soaking (12, 24, 36, and 48 hours). To examine the durability of sample, dry wood termites (Cryptotermes cynocephalus Light) were used. The results showed that the average values of absorption, retention, and depth of penetration were 33.09 to 70.77 kg/m3, 3.81 to 10.77 kg/m3, and 2.34 to 3.86 mm, respectively. The average values of termite mortality during 2 weeks and 4 weeks were 46.33 to 53 %, 82.67 to 94.33 %. Weight reduction and degree of the damage were, 560 to 570 mg, and 30.34 to 31.27 %, respectively. By analysis of variance, there was an interaction between the type of preservatives and the duration of cold soaking factors, which affected significantly the termite mortality. Type of preservative affected significantly the absorption and penetration. Further, the duration of cold soaking affected significantly the level of absorption, retention and penetration. The application of preservatives could reduce the mass loss of specimens until 70 % as well as to give higher levels of mortality rate (87-92 %) compared to that of untreated one.
Faculty of Forestry, Universitas Gadjah Mada
2013-07-08 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/7516
Jurnal Ilmu Kehutanan; Vol 7, No 2 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/7529
2017-09-03T07:21:01Z
jikfkt:ART
"130708 2013 eng "
2477-3751
0126-4451
dc
Studi Mutu Kayu Jati di Hutan Rakyat Gunungkidul I. Pengukuran Laju Pertumbuhan
Marsoem, Sri Nugroho
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Yogyakarta
Array
Kabupaten Gunungkidul menyimpan potensi sebagai penyedia kayu jati sebagai bahan baku industri dari hutan rakyatnya. Penelitian ini bertujuan untuk mengetahui besarnya laju pertumbuhan dan riap pohon jati di hutan rakyat di Kabupaten Gunungkidul serta dihubungkan dengan faktor hujan. Tempat tumbuh yang diamati yaitu Panggang, Playen dan Nglipar. Pengamatan dilakukan selama 3 tahun, yaitu periode I (Oktober 2009-September 2010), periode II (Oktober 2010-September 2011), dan periode III (Oktober 2011-September 2012). Pengukuran diameter pohon dilakukan setiap akhir bulan pada 3 kelas diameter pohon, yaitu besar, menengah dan kecil, dengan ulangan 5 pohon tiap kelasnya. Hasil pengamatan menunjukkan rerata riap diameter tertinggi sebesar 2,21 ± 0,52 cm/tahun diamati di Panggang untuk kelas diameter besar sedangkan nilai terendah sebesar 0,33 ± 0,19 cm/tahun diamati di Nglipar yaitu untuk kelas diameter kecil. Kelas diameter besar memberikan nilai riap yang tertinggi. Pertumbuhan saat periode I hampir semua menunjukkan tertinggi pada semua tempat tumbuh dan kelas diameter. Secara umum, pengukuran riap bulanan menunjukkan adanya pertumbuhan minim dan minus antara Mei-September, puncak pertumbuhan antara Nopember-Februari. Korelasi Pearson antara riap dan curah/hari hujan untuk semua data menunjukkan korelasi sangat nyata antara riap bulanan dengan curah hujan (r = 0,24) atau hari hujan (r = 0,28). Korelasi data berdasarkan faktor tempat tumbuh memperoleh derajat korelasi tertinggi (r = 0,67) yang diamati di Playen khususnya di periode II. Rendahnya derajat korelasi secara umum mengindikasikan beberapa faktor lain perlu diperhitungkan untuk mengetahui kecenderungan pertumbuhan pohon hutan rakyat Gunungkidul.
Katakunci: Tectona grandis, laju pertumbuhan, riap, Gunungkidul, curah hujan
A Study of Teakwood Quality Grown in Community Forests in Gunungkidul, I. Measurement of Growth-Rate
Abstract
Gunungkidul regency has a potentiality to be a producer of teak wood as raw materials for industrial purposes. This study aimed to find out the growth-rate and increment levels of teak trees from community forests in Gunungkidul regency and to correlate it with the rainfall factor. Three observed sites were Panggang, Playen and Nglipar. The observation was conducted during 3 years, i.e. 1st period (October 2009-September 2010), 2nd period (October 2010-September 2011), and 3rd period (October 2011-September 2012). The measurements of diameter were performed on trees in 3 diameter classes (high, middle, small) every in the end of the month by 5 replications of each class. The results were the highest average of diameter increment were 2.21 + 0.52 cm/year observed in Panggang for high diameter class as the lowest level was 0.33 + 0.19 cm/year observed in Nglipar for small diameter class. High diameter class showed the highest increment values. Most of the growth-rate levels of 1st period were the highest in every sites and diameter classes. Generally, the measurement of monthly increment showed the minimum or minus growth between May and September, the highest increment peaks were measured during November – February. Pearson’s correlation for all the data between the rates of increment and rainfall (r = 0.24) or rainy day (r = 0.28) were significant. Data correlation on the basis of gowth-sites showed the highest degree which were observed in Playen, especially in the 2nd period. The weak correlation generally indicates the other factors should be considered to discover the trend of the growth of teak trees in the community forests of Gunungkidul regency.
Faculty of Forestry, Universitas Gadjah Mada
2013-07-08 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/7529
Jurnal Ilmu Kehutanan; Vol 7, No 2 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/7530
2017-09-03T07:22:34Z
jikfkt:ART
"130708 2013 eng "
2477-3751
0126-4451
dc
Pengaruh Pakan dan Bahan Peluruh Serisin terhadap Filamen Terurai Kokon Ulat Sutera Emas Cricula trifenestrata Helf
Frans, Terry M
Program Studi Ilmu Kehutanan, Fakultas Pertanian Universitas Sam Ratulangi Manado
Array
Tujuan penelitian untuk melihat pengaruh pakan dan bahan peluruh serisin, terhadap filamen terurai kokon ulat sutera emas Cricula trifenestrata Helf. Penelitian ini diharapkan dapat menemukan teknologi penguraian filamen pada tahap pemintalan benang, sebagai bahan baku pembuatan kain sutera. Penelitian menggunakan percobaan faktorial dalam rancangan acak lengkap (RAL) untuk melihat interaksi dari kedua faktor perlakuan yaitu jenis pakan dan jenis bahan peluruh serisin. Variabel yang diamati adalah panjang filamen terurai per kokon (cm), jumlah potongan filamen terurai per kokon (helai), dan panjang filamen perpotongan (cm/helai). Penelitian memberikan hasil bahwa kombinasi perlakuan jenis pakan daun alpukat dan bahan peluruh serisin sabun dengan abu kayu memberikan pengaruh yang terbaik terhadap rata-rata panjang filamen terurai per kokon, rata-rata jumlah potongan filamen per kokon, dan rata-rata panjang filamen perpotongan. Dengan demikian kombinasi perlakuan ini dapat disarankan dalam proses penguraian kokon.
Katakunci: sutera, Cricula trifenestrata, serisin, filamen, kokon.
Effects of Fodder and Sericin Degumming Agents on Asunder Filament of Golden Silkworm Cocoon of Cricula trifenestrata Helf
Abstract
The research aim was to obtain the effect of fodder and sericin degumming agents on asunder filament of golden silkworm cocoon of Cricula trifenestrata Helf. This study expected to find an asunder filament technology in the yarn spinning phase, as the material of silk textile. The complete random design was used to find the interaction between two treatment factors of fodder types and sericin degumming agents. The length of asunder filament per cocoon (cm), the amount of pieces of asunder filament per cocoon (sheet), and the length of filament per piece (cm/sheet) were evaluated. The combination between avocado leaf and soap sericin degumming agent with wood ashes treatment showed the best results on the average of the length of sericin emitec filament asunder per cocoon, the average amount of filament pieces per cocoon, and the average filament length per piece. Therefore, the treatment combination is recommended on the cocoon asunder process.
Faculty of Forestry, Universitas Gadjah Mada
2013-07-08 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/7530
Jurnal Ilmu Kehutanan; Vol 7, No 2 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/7531
2017-09-03T07:29:44Z
jikfkt:ART
"130708 2013 eng "
2477-3751
0126-4451
dc
Perubahan Struktur dan Komposisi Hutan Rawa Gambut Menggunakan Citra Penginderaan Jauh dan Pendekatan Ekologis di Kawasan Bekas Pengembangan Lahan Gambut Provinsi Kalimantan Tengah
Sukarna, Raden Mas
Jurusan Kehutanan, Fakultas Pertanian, Universitas Palangka Raya
Array
Pengembangan lahan gambut (PLG) satu juta hektar untuk lahan pertanian antara tahun 1995-1998 di Provinsi Kalimantan Tengah telah menyebabkan perubahan yang nyata terhadap struktur dan komposisi hutannya, dan secara langsung memberikan dampak terhadap keseimbangan fungsi ekologisnya. Perubahan hutan rawa gambut (HRG) yang relatif cepat belum sepenuhnya dapat diikuti dengan kegiatan evaluasi riil, karena luasnya kawasan dan akses yang terbatas. Penelitian ini bertujuan untuk memperkirakan perubahan struktur dan komposisi HRG antara tahun 2003-2010 menggunakan teknik penginderaan jauh dan pendekatan ekologis dikawasan bekas PLG dengan luas ± 368.000 ha. Hasil penelitian menunjukkan bahwa aplikasi citra penginderaan jauh melalui model kerapatan kanopi hutan, berhasil menentukan klasifikasi dan distribusi perubahan struktur dan komposisi HRG dan kondisi ekologisnya secara efektif. Kawasan HRG dengan kondisi ekologis alamiah dan sub alamiah telah berkurang luasnya sebesar 1,49 %, kawasan hutan semi alamiah dan transisi ke semi alamiah bertambah luasnya sebesar 3,69 %, dan kawasan hutan transisi dan non alamiah bertambah luasnya sebesar 4,39 %. Fakta ini menggambarkan bahwa kawasan HRG bekas PLG saat ini mengalami penurunan keragaman jenis-jenis endemik dengan indeks antara 0,5 - 2,5 yang mengakibatkan kurang stabilnya fungsi ekologi atau ekosistemnya.
Katakunci: hutan rawa gambut, penginderaan jauh, ekologi, struktur dan komposisi hutan
Structural and Composition Changes of Peat Swampeat Forests Using Remote Sensing and Ecological Approaches at the Abandoned Peat Development Site in Central Kalimantan Province
Abstract
Peatland project of one million hectares to agricultural land between 1995 and 1998, the so-called Mega Rice Project (MRP) in Central Kalimantan province, have significantly changed both structure and composition of peat swamp forest (PSF) as well as the balance of ecological functions. These quick changes have not been fully followed by real evaluation activities due to large area and limited access. To answer these problems, this study aimed to estimate these changes between 2003 and 2010 using remote sensing techniques and ecological approach on approximately 368,000 ha of ex-MRP area. The results showed that the application of remote sensing imagery through Forest Canopy Density (FCD) models were able to determine both forest classification and distribution effectively, including its ecological conditions. The natural and sub-natural PSF area had decreased by 1.49%, semi natural and its transition increased by 3.69%. Non natural and its transition increased by 4.39%. These facts illustrate that PSF on ex-MRP area was decreasing in term of its endemic species diversity with index between 0.5 and 2.5. Consequently, its ecological or ecosystem functions were also unstable.
Faculty of Forestry, Universitas Gadjah Mada
2013-07-08 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/7531
Jurnal Ilmu Kehutanan; Vol 7, No 2 (2013)
eng
Copyright (c) 2013 Jurnal Ilmu Kehutanan
oai:ojs.journal.ugm.ac.id:article/8195
2015-12-13T16:59:42Z
jikfkt:ART
oai:ojs.journal.ugm.ac.id:article/8357
2015-12-13T16:59:42Z
jikfkt:ART
oai:ojs.journal.ugm.ac.id:article/8546
2016-01-07T02:27:36Z
jikfkt:ART
oai:jurnal.ugm.ac.id:article/8547
2017-07-09T07:31:21Z
jikfkt:ART
"151222 2015 eng "
2477-3751
0126-4451
dc
Studi Mutu Kayu Jati di Hutan Rakyat Gunungkidul II. Pengukuran Tegangan Pertumbuhan
Marsoem, Sri Nugroho
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada
Prasetyo, Vendy Eko
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada
Sulistyo, Joko
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada
Lukmandaru, Ganis
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada
Array
Pohon dengan tegangan pertumbuhan yang tinggi dikhawatirkan akan mudah mengalami cacat seperti pecah, retak, dan pelengkungan. Penelitian ini bertujuan untuk mengetahui variasi nilai tegangan pertumbuhan pohon jati yang tumbuh di tiga tempat hutan rakyat Gunungkidul. Nilai pelepasan regangan juga dibahas dari hubungannya dengan kecepatan tumbuh dan berat jenis. Pelepasan regangan pada arah longitudinal dan tangensial ditentukan melalui metode strain-gauge. Nilai pelepasan regangan di permukaan batang berkisar antara -130,5 sampai -999,5 µå sedangkan nilai pelepasan regangan tangensial antara -103 to 1411,5 µå. Beberapa nilai pelepasan regangan longitudinal yang cukup tinggi mengindikasikan adanya kayu tarik. Selanjutnya, variasi dalam pohon untuk tegangan pertumbuhan menunjukkan tidak ada kecenderungan tertentu. Perbedaan nyata diamati dimana sampel dari Nglipar memberikan nilai paling tinggi (-628,25 + -223,73 µå). Meskipun demikian, tidak ada hubungan nyata yang diukur antara nilai pelepasan regangan dihubungkan dengan laju pertumbuhan dan berat jenis. Penyebaran nilai tegangan sisa internal dalam arah radial bervariasi diantara pohon satu dengan lainnya dimana beberapa sampel menunjukkan adanya perbedaan nilai pelepasan regangan yang drastis. Untuk itu, perlu dilakukan usaha untuk mengurangi perbedaan yang mencolok di nilai pelepasan regangan dari pusat ke permukaan batang untuk mencegah cacat yang berkaitan dengan tegangan pertumbuhan.
Katakunci: Tectona grandis, tegangan pertumbuhan, pelepasan regangan, sifat kayu, Gunungkidul
A study of teak wood quality from community forests in Gunungkidul II. Growth-stress measurement
Abstract
Trees containing large growth stresses, leads to significant losses due to split, checked and also warped. The variation of growth-stress in teak trees grown in the three community forest sites of Gunungkidul regency was observed. The released strain levels were also discussed in relation to the growth-rate and specific gravity. The strains released in the longitudinal and tangential directions were measured by the strain-gauge method. The values of longitudinal released strain at the periphery of the stem were ranged from -130.5 to -999.5 µå whereas tangential released strain were from -103 to 1411.5 µå. Some high values of longitudinal released strain indicated the presence of tension wood. Further, intra-tree variation of growth stress showed no particular tendencies among the samples. There were significant differences in the longitudinal strain as samples from Nglipar site showed the highest amounts (-628.25 + -223.73 µå). However, no significant correlation was found between the values of released strains with the growth-rate and specific gravity. The radial distributions of internal residual-stress were varied among the individuals which some trees exhibited steeper released strain gradients. Thus, it is important to reduce the gradient from pith to periphery of released-strain patterns to prevent the defect related to the growth stresses.
Faculty of Forestry, Universitas Gadjah Mada
2014-01-22 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/8547
Jurnal Ilmu Kehutanan; Vol 8, No 1 (2014)
eng
Copyright (c) 2014 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/8548
2017-07-09T07:31:21Z
jikfkt:ART
"151222 2015 eng "
2477-3751
0126-4451
dc
Analisis Kelayakan Finansial Usaha Budidaya Bambu
Khotimah, Husnul
Pusat Peningkatan Produktivitas Hutan, Badan Penelitian, Pengembangan, dan Inovasi
Kementerian Lingkungan Hidup dan Kehutanan
Jl. Gunung Batu 5, Bogor, PO Box 331
Sutiono, Sutiono
Pusat Peningkatan Produktivitas Hutan, Badan Penelitian, Pengembangan, dan Inovasi
Kementerian Lingkungan Hidup dan Kehutanan
Jl. Gunung Batu 5, Bogor, PO Box 331
Array
Budidaya bambu diperlukan untuk menambah populasi bambu yang cenderung berkurang yang disebabkan oleh beralihnya fungsi lahan yang digunakan untuk pemukiman atau diganti dengan komoditi tanaman lain yang dianggap lebih menguntungkan. Sementara itu kebutuhan bahan baku bambu terus meningkat sejalan dengan pertumbuhan penduduk dan perkembangan kemajuan ilmu pengetahuan. Budidaya bambu bermanfaat selain untuk menjaga ketersediaan suplai juga untuk meningkatkan kualitas bambu untuk memenuhi permintaan pasar. Tulisan ini mengkaji analisis finansial dari penanaman bambu. Kajian finansial dibutuhkan untuk menunjukkan bahwa upaya penanaman atau budidaya bambu ini layak atau tidak secara finansial untuk dilakukan. Data yang digunakan adalah data hasil penelitian di perusahaan perkebunan bambu PT XYZ di Lampung. Hasil penelitian menunjukkan bahwa nilai NPV (Rp 36.644.364,08) lebih besar dari nol, Net B/C (2,56) lebih besar dari satu, IRR (11 %) lebih besar dari suku bunga 6 %, serta payback period pada tahun ke-9 umur proyek 15 tahun. Berdasarkan kriteria indikator kelayakan finansial dapat disimpulkan bahwa usaha budidaya bambu layak secara finansial untuk diusahakan.
Katakunci: Hasil Hutan Bukan Kayu (HHBK), budidaya bambu, studi kelayakan, analisis finansial
Financial analysis and feasibity study of bamboo cultivation
Abstract
Bamboo cultivation is necessary to increase the population of bamboo clumps. The bamboo clumps tend to decrease due to the shift of used lands for residential or replaced by other crop comodities, which are considered more profitable. On the other hand, the need of bamboo for raw materials remain increase in line with population growth and the development of science. The important of the bamboo cultivation are to maintain the availability of its supply and to improve the quality of bamboo, which meet the market demands. This paper examined financial analysis of bamboo cultivation. Financial study was necessary to show whether the effort to cultivate bamboo is financially feasible or not. The data used were colecting from the research on bamboo plantation of PT XYZ company in Lampung. The results showed that the NPV (IDR 36,644,364.08) was greater than zero, the Net B/C ê-2.56 êwas greater than one, the IRR (11 %) was greater than the rate of 6%, and the payback period on the ninth year was less than the project life 15 years. Based on the criteria of financial study, it can be concluded that the cultivation of bamboo is financially feasible to be developed.
Faculty of Forestry, Universitas Gadjah Mada
2014-01-22 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/8548
Jurnal Ilmu Kehutanan; Vol 8, No 1 (2014)
eng
Copyright (c) 2014 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/8550
2017-07-09T07:31:21Z
jikfkt:ART
"151222 2015 eng "
2477-3751
0126-4451
dc
Sebaran Populasi dan Potensi Tanaman Ganitri ( Elaeocarpus ganitrus Roxb ) di Jawa Tengah
Rohandi, Asep
Balai Penelitian Teknologi Agroforestry Ciamis
Jl. Raya Ciamis-Banjar Km 4, Ciamis 46201
Gunawan, Gunawan
Balai Penelitian Teknologi Agroforestry Ciamis
Jl. Raya Ciamis-Banjar Km 4, Ciamis 46201
Array
Ganitri (Elaeocarpus ganitrus Roxb) merupakan jenis tanaman multiguna yang cukup potensial untuk dikembangkan. Jenis ini sudah mulai dikenal dan dibudidayakan oleh masyarakat khususnya diwilayah Jawa Tengah. Penelitian bertujuan untuk mengidentifikasi sebaran populasi dan mengetahui potensi tanaman ganitri meliputi informasi geografi dan kondisi ekologisnya. Metode yang dilakukan meliputi : (1) studi literatur dan komunikasi langsung dengan pihak terkait dan masyarakat, (2) survei lapangan untuk pengumpulan data penampilan dan produktifitas tegakan ganitri meliputi : lokasi, luas, tahun tanam, kerapatan tegakan, tinggi, diameter, bentuk batang, sistem penanaman, (3) pengumpulan data primer dan sekunder kondisi tempat tumbuh tanaman ganitri meliputi : letak geografis, ketinggian, curah hujan dan jenis tanah. Hasil penelitian menunjukkan bahwa tanaman ganitri di wilayah Jawa Tengah tersebar di hutan tanaman pada ketinggian 0-1.300 m dpl pada jenis tanah regosol, andosol, podsolik coklat, atosol dengan curah hujan 3.500-4.500 mm/tahun. Sebaran hutan tanaman ganitri tidak ditemukan di semua kabupaten, tetapi hanya terdapat di beberapa wilayah/kabupaten yang secara umum ditanam dengan beberapa tujuan yaitu terutama untuk dimanfaatkan bijinya sebagai hasil hutan bukan kayu (HHBK), selain untuk kayu pertukangan serta fungsi lindung. Sebaran hutan tanaman ganitri di Jawa Tengah ditemukan di Kabupaten Cilacap, Kebumen, Kendal, Brebes, Purworejo, Banjarnegara, Wonosobo, Banyumas, Temanggung, Semarang dan Karanganyar. Secara umum, ganitri memiliki kisaran wilayah yang cukup luas mulai dari dataran tinggi sampai dataran rendah, khususnya berada diwilayah Jawa Tengah bagian tengah dan selatan. Pengembangan tanaman ganitri untuk produksi biji dapat ditemukan di Kabupaten Cilacap,Kebumen,Purworejo, dan Banjarnegara.
Katakunci: Elaeocarpus ganitrus Roxb, hutan rakyat, Jawa Tengah, sebaran populasi, potensi
Distribution and the potential growth of ganitri ( Elaeocarpus ganitrus Roxb ) in Central Java
Abstract
Ganitri (Elaeocarpus ganitrus Roxb) is a multi-purpose species that has the potential to be developed. This species has been known and cultivated by people, particularly in the region of Central Java. The research aimed to identify the distribution of the population and to determine the potentiality of ganitri including the geographic information and ecological conditions. The methods included: (1) the study of literature and direct communication with stakeholders and public, (2) field survey for data collection of performance and productivity of ganitri stands which included : location, spacious, year of planting, stand density, height, diameter, stem form, and planting system (3) primaryand secondary data collections of the site conditions of ganitri plants which included: geographical location, altitude, rainfall, and soil type. The results showed that the ganitri in Central Java was distributed in forest plantations at an altitude of 0-1,300 m abovesea level, on the soil type of regosol, andosol, brown podzolic, latosol with rainfall of 3,500-4,500 mm/year. The distributions of ganitri plantations were found only in some/districts which planted the trees for multi-purposes, which are primarily to produce the seeds as non-timber forest products (NTFPs), to produce construction timber, and to protect the area. The distributions of forest plantations of ganitri in Central Java were found in Cilacap, Kebumen, Kendal, Brebes, Purworejo, Banjarnegara, Wonosobo, Banyumas, Temanggung, Semarang, and Karanganyar district. In general, ganitri plants had a fairly broad ecological range from the highlands to the lowlands, especially in the territory of central and southern of Central Java. Ganitri establishment for seed productions can be found in the District of Cilacap, Kebumen, Purworejo, and Banjarnegara.
Faculty of Forestry, Universitas Gadjah Mada
2014-01-22 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/8550
Jurnal Ilmu Kehutanan; Vol 8, No 1 (2014)
eng
Copyright (c) 2014 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/8572
2017-07-09T07:31:21Z
jikfkt:ART
"151222 2015 eng "
2477-3751
0126-4451
dc
Pertumbuhan Stek Cabang Bambu Petung (Dendrocalamus asper) pada Media Tanah, Arang Sekam dan Media Kombinasinya.
Adriana, Adriana
Bagian Silvikultur, Fakultas Kehutanan, Universitas Gadjah Mada
Jl. Agro No. 1, Bulaksumur, Sleman 55281
Winarni, Widaryanti W.
Bagian Silvikultur, Fakultas Kehutanan, Universitas Gadjah Mada
Jl. Agro No. 1, Bulaksumur, Sleman 55281
Prehaten, Daryono
Bagian Silvikultur, Fakultas Kehutanan, Universitas Gadjah Mada
Jl. Agro No. 1, Bulaksumur, Sleman 55281
Nawangsih, Ganis
Bagian Silvikultur, Fakultas Kehutanan, Universitas Gadjah Mada
Jl. Agro No. 1, Bulaksumur, Sleman 55281
Array
Bambu petung banyak digunakan untuk bahan konstruksi bangunan karena sifatnya yang keras dan kuat. Pembiakan secara vegetatif menggunakan rimpang (rhizome), namun memiliki kelemahan, yaitu kesulitan dalam pembongkaran rumpun bambu. Oleh karena itu digunakan stek cabang,lebih praktis, bahan stekter sedia lebih banyak, mudah diperoleh, murah, tidak merusak rumpun asal, waktu pengambilan lebih cepat, dan pembentukan rumpun lebih mudah. Media pengakaran yang umum digunakan adalah top soil, namun pengadaan top soil dalam jumlah besar sulit, sehingga perlu dicari alternatif lain yaitu dengan mencampur media top soil dengan media lain. Media yang digunakan yaitu media tanah, arang sekam dan kombinasi tanah+arang sekam (2:1). Stek cabang bambu petung dengan umur pohon induk ± 2 tahun, diameter 2-3 cm dan panjang 2 ruas. Panjang tunas pada perlakuan media tanah, arang sekam dan kombinasi tanah+arang sekam menunjukkan berbeda di antara perlakuan. Jumlah tunas terbanyak terdapat pada perlakuan media arang sekam dan kombinasi tanah+arang sekam (3 tunas). Media campuran tanah+arang sekam menunjukkan panjang tunas terpanjang (37,11 cm), dan panjang akar terpanjang (17,5 cm). Media tanah dan arang sekam menunjukkan % berakar terbesar (86,67 %).
Kata kunci: stek cabang, bambu petung, media tanah, arang sekam, pembiakan vegetatif.
Growth of branches of petung bamboo (Dendrocalamus asper) grafting in soil media, husk charcoal, and their combination
Abstract
Recently, the utilization of bamboo is more extensive, but the attention towards its regeneration is not sufficient. The use of stem or branch cuttings are more practical and having more benefits and promising because the cutting materials are more available, easier to gain, cheaper, undamaging the source clump, faster in the taking time, and easier in the clump formation. The common rooting media used is top soil (the fertile part of upper layer soil). Recently, it is quite hard to provide top soil in a large number. Thus, it is important to find an alternative source in order to decrease the use of top soil that is by mixing the top soil media with other materials. The media used were soil media, husk charcoal, and the mixture of soil and husk charcoal (2:1). The branch cuttings used were branches of petung bamboo taken from 2 years old amboo, with 2-3 cm in diameter, and 2 nodus in length. The treatment was done by giving some variations in the soil media, the husk charcoal,and the mixture of soil and huskcharcoal. The mixture of soil and huskcharcoal media gave a significant influencet o the length of sprout variable,but it did not give significant influence to the number of sprout, the length of root, and the percentage of rooting.
Faculty of Forestry, Universitas Gadjah Mada
2014-01-22 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/8572
Jurnal Ilmu Kehutanan; Vol 8, No 1 (2014)
eng
Copyright (c) 2014 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/8574
2017-07-09T07:31:21Z
jikfkt:ART
"151222 2015 eng "
2477-3751
0126-4451
dc
Potensi dan Pengembangan Jenis-Jenis Tanaman Anggrek dan Obat-obatan di Jalur Wisata Loop-Trail Cikaniki-Citalahab Taman Nasional Gunung Halimun-Salak
Hani, Aditya
Balai Balai Penelitian Teknologi Agroforestry Ciamis
Widyaningsih, Tri Sulistyati
Balai Balai Penelitian Teknologi Agroforestry Ciamis
Damayanti, Ratna Uli
Penelitian Teknologi Perbenihan Tanaman Hutan, Pakuan
Array
Taman Nasional Gunung Halimun-Salak (TNGHS) merupakan salah satu kawasan hutan hujan tropis terluas di Jawa Barat yang memiliki keanekaragamaan hayati tinggi. Jenis keanekaragaman hayati tersebut di antaranya berupa tanaman hias dan tumbuhan obat-obatan. Kedua jenis tersebut merupakan Hasil Hutan Bukan Kayu (HHBK) yang berpotensi untuk dikembangkan secara ekonomi. Penelitian ini bertujuan untuk mengidentifikasi jenis-jenis anggrek dan tumbuhan obat-obatan di kawasan TNGHS. Penelitian ini merupakan langkah awal upaya konservasi eksitu jenis-jenis tanaman hutan. Kajian dilakukan pada kawasan hutan TNGHS antara daerah Cikaniki dan Citalahab yang memiliki ketinggian 1.000-1.900 m dpl. Pengumpulan data dilakukan dengan cara eksplorasi dan identifikasi tanaman. Hasil eksplorasi menunjukkan adanya 68 jenis anggrek,sedangkan tumbuhan obat yang ditemukan sebanyak 14 jenis tumbuhan serta telah dimanfaatkan oleh masyarakat hutan untuk keperluan pengobatan secara tradisional. Potensi tanaman hias dan obat-obatan yang terdapat di TNGHS perlu dilestarikan dan dikembangkan melalui konservasi eksitu. Kegiatan tersebut dapat dijadikan sebagai media pembelajaran bagi masyarakat mengenai teknik budidaya tanaman anggrek dan obat.
Kata kunci: stek cabang, bambu petung, media tanah, arang sekam, pembiakan vegetatif
Potentials and development of orchid species and medicinal plant in Tourism Loop-Trail Cikiniki-Citalahab, Gunung Halimun-Salak National Park
Abstract
Halimun-Salak Mountain National Park (HSMNP) is one of the largest tropical rain forests in,West Java which has a high biodiversity value. Biodiversity type includes ornamental and medicinal plants. Both of these are the Non-Timber Forest Products (NTFPs) with the potentiality to be economically developed. This research aimed to identify orchide species and medicine plants in the HSMNP. This study is an initial step on ex situ conservation of forest plant species. Studies were conducted in the forest area between Cikaniki and Citalahab area in TNGHS which has an altitude of 1000-1900 m asl. Data collection was performed by exploration and identification of plants. Exploration results indicated the presence of 68 of orchid species and 14 species of medicinal plants. These species have mostly been used by the forest community for traditional medicinal uses. Potency of ornamental and medicine plants should be preserved and developed through ex situ conservation. These activities can be used as a learning medium for the community with regard to cultivation techniques of orchides and medicinal plants.
Faculty of Forestry, Universitas Gadjah Mada
2014-01-22 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/8574
Jurnal Ilmu Kehutanan; Vol 8, No 1 (2014)
eng
Copyright (c) 2014 Jurnal Ilmu Kehutanan
oai:jurnal.ugm.ac.id:article/8575
2017-07-09T07:31:21Z
jikfkt:ART
"151222 2015 eng "
2477-3751
0126-4451
dc
An Innovative Policy For Rural Development? Rethinking Barriers to Rural Communities Earning Their Living from Forests in Indonesia
Maryudi, Ahmad
Faculty of Forestry, Universitas Gadjah Mada
Jl. Agro No. 1 Bulaksumur, Sleman 55281
Array
The government of Indonesia (GoI) has trialed a number of community forestry schemes, ranging from collaborative management to long-term forest management rights handed to local communities, and implements them in state forest land. This policy shift toward community forestry in Indonesia shows an emerging signal on acknowledgement on the ability of local forest users to manage forest resources sustainably,and gives the people opportunities to benefit from the resources and eventually improve their daily life. With so much of promises community forestry brings, this paper primarily asks why the program is yet to meet the high expectation of rural development, tackling the pervasive rural poverty. It aims to identify,analyze and address key constraints of rural communities in exercising their rights which are conside red as key factors to improve their live lihood and alleviate rural poverty. That the government-initiated community forestry schemes fall short of the initial targets in terms of the extent of state forest land areas managed by to forest communities to a large extent is explained bythe regulatory barriers of tenurial uncertainties and the complexlicensing procedures. Those coupled by the limited capacityas technical assistance rarely provided by government institutions appear to impede local people to secure better livelihood.
Keywords: community forestry, livelihood, rural communities, poverty alleviation, regulatory barriers
Inovasi kebijakan untuk pembangunan pedesaan? Mengulas berbagai hambatan masyarakat pedesaan untuk mendapat penghidupan dari dari hutan di Indonesia
Intisari
Pemerintah Indonesia telah meluncurkan berbagai program kehutanan sosial di kawasan hutan negara, mulai dari skema kemitraan sampai dengan pemberian hak kelola hutan bagi masyarakat lokal. Pergeseran paradigma kebijakan menuju kehutanan sosial memunculkan sinyal pengakuan terhadap kemampuan masyarakat lokal dalam mengelola hutan secara lestari, dan memberikan kesempatan bagi mereka untuk memanfaatkan sumberdaya hutan untuk memperbaiki kehidupan sehari-hari. Pertanyaan kunci yang diangkat dalam artikel ini adalah mengapa program kehutanan sosial belum mampu menggapai tujuan mulia untuk memerangi kemiskinan yang sangat akut di pedesaan sekitar hutan. Tujuan dari artikel ini adalah mengidentifikasi, menganalisis dan memecahkan berbagai hambatan yang dipandang sebagai faktor kunci bagi masyarakat pedesaan untuk memperbaiki tingkat penghidupan. Belum optimalnya berbagai program kehutanan sosial yang diluncurkan oleh pemerintah secara garis besar disebabkan oleh ketidakpastian tenurial dan prosedur perijinan yang sangat kompleks. Hal ini diperparah oleh terbatasnya pendampingan teknis yang pada akhirnya menghambat masyarakat pedesaan untuk menggapai penghidupan yang lebih baik.
Faculty of Forestry, Universitas Gadjah Mada
2014-01-22 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/8575
Jurnal Ilmu Kehutanan; Vol 8, No 1 (2014)
eng
Copyright (c) 2014 Jurnal Ilmu Kehutanan
oai:ojs.journal.ugm.ac.id:article/8695
2016-02-03T09:50:44Z
jikfkt:ART
oai:jurnal.ugm.ac.id:article/10160
2017-07-09T07:31:38Z
jikfkt:ART
"160322 2016 eng "
2477-3751
0126-4451
dc
Pengaruh Suhu dan Metode Perlakuan Panas terhadap Sifat Fisika dan Kualitas Finishing Kayu Mahoni
Widyorini, Ragil
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada
Jl. Agro No. 1, Bulaksumur, Sleman 55281
Khotimah, Khusnul
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada
Jl. Agro No. 1, Bulaksumur, Sleman 55281
Prayitno, Tibertius Agus
Bagian Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada
Jl. Agro No. 1, Bulaksumur, Sleman 55281
Array
Perlakuan panas dikenal sebagai metode yang dapat digunakan untuk meningkatkan stabilitas dimensi dan menurunkan higroskopisitas. Di sisi lain, perlakuan panas dapat membuat warna kayu menjadi lebih gelap, penurunan sifat mekanika kayu, dan sifat wetabilitas kayu. Oleh karena itu, penelitian mengenai perlakuan panas pada kondisi yang optimum sangat menarik untuk dilakukan agar menghasilkan kayu dengan kualitas yang lebih baik. Tujuan penelitian ini adalah mengetahui pengaruh interaksi suhu dan metode perlakuan panas terhadap sifat fisika dan kualitas finishing kayu mahoni. Contoh uji perlakuan dibuat dari kayu mahoni yang berasal dari industri penggergajian kayu rakyat. Penelitian ini menggunakan 2 metode perlakuan panas yaitu metode oven dan penguapan (steaming) pada variasi suhu 90°C, 120°C, dan 150°C selama 2 jam waktu efektif. Pengujian sifat fisika diuji berdasarkan standar ASTM, yang meliputi : kadar air seimbang, perubahan dimensi, perubahan warna, dan wetabilitas. Pengujian finishing meliputi cross cut test, uji delaminasi, dan uji kekilapan (glossy test). Hasil penelitian menunjukkan bahwa interaksi antara suhu dan metode perlakuan panas berpengaruh sangat nyata terhadap perubahan warna, serta berpengaruh nyata terhadap penyusutan radial, cross cut test, dan uji delaminasi. Metode oven menghasilkan contoh uji dengan kadar air dan pengembangan radial yang lebih rendah, warna yang lebih terang, serta uji delaminasi yang lebih baik dibandingkan dengan metode penguapan.
Kata kunci: perlakuan panas, metode oven, metode penguapan, suhu, finishing
Effect of temperature and heat treatment on physical properties and finishing quality of mahagony wood
Abstract
Heat treatment is well known as a method for increasing dimensional stability and reducing hygroscopicity of wood. However, heat tratment can cause the color of wood become darker and reduce the wettability, as well as its mechanical properties. Therefore, the optimum condition of heat treatment is essential to be studied to obtain the high quality of properties treated wood. This research focused on investigating the heating temperature and treatment method on physical properties and finishing quality of mahagony wood. Two treatment methods, i.e. oven method and steaming method, were used in this research. The heating temperatures were set at 90°C, 120°C, and 150°C. The effective heating time was 2 h. The wood physical properties were tested according to ASTM standards and wood finishing quality were tested for its cross cut, delamination, and glossy test. The results showed that interaction between treatment method and heating temperature affected significantly on the change in color, radial shrinkage, cross cut test, and delamination test. Oven method resulted in reducing moisture content and radial shrinkage, light color, and better quality of wood, compared to steaming method.
Faculty of Forestry, Universitas Gadjah Mada
2014-07-22 00:00:00
Peer-reviewed Article
application/pdf
https://journal.ugm.ac.id/jikfkt/article/view/10160
Jurnal Ilmu Kehutanan; Vol 8, No 2 (2014)
eng
Copyright (c) 2014 Jurnal Ilmu Kehutanan
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