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INDONESIA
MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management
Published by Institut Pertanian Bogor
ISSN : 20870469     EISSN : 20892063     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Manajemen Hutan Tropika is a periodic scientific articles and conceptual thinking of tropical forest management covering all aspects of forest planning, forest policy, utilization of forest resources, forest ergonomics, forest ecology, forest inventory, silviculture, and management of regional ecosystems.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol. 10 No. 1 (2004)" : 6 Documents clear
Identifikasi dan Uji Patogenisitas Penyebab Penyakit Hawar Daun Pada Suren (Toona sureni Merr.) Achmad; Maisaroh, Mamay
Jurnal Manajemen Hutan Tropika Vol. 10 No. 1 (2004)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Rhizoctonia sp. causes leaf blight on Toona sureni. This pathogen has characteristics such as right-angles hyphal branching pattern, the presence of septa, the absence of clamp connection, produced no conidia nor spores, and formed sclerotia. The disease symptom is necrotic type with brownish lesions which develop fast on the leaf. Being covered by the lesions, the leaf will be completely brown, macerated and then become wilt, dry and fall. The dispersal of the disease is mediated by the touching of the infectious leaves with the healthy ones. The experiment showed that Rhizoctonia inoculation on leaf, with or without wound, caused the seedling diseased.
Effect of Blue Stain on the Toughness of Benguet Pine (Pinus Kesiya Royle Ex. Gordon) Wood I.G.K. Tapa Darma
Jurnal Manajemen Hutan Tropika Vol. 10 No. 1 (2004)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Kualitas kayu pinus Beunguet dipengaruhi oleh banyak faktor, diantaranya serangan blue stain sangat mempengaruhi sifat-sifat kayu seperti keindahan dan ”daya tahan beban tiba-tiba” (toughness) kayu serta mengurangi nilai jual dan pemasaran kayu. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh serangan blue stain terhadap daya tahan beban tiba-tiba dari kayu pinus Benguet (Pinus kesiya Royle ex. Gordon) pada berbagai periode inkubasi. Ternyata hasil penelitian ini menunjukkan daya tahan beban tiba-tiba kayu pinus Benguet yang diserang blue stain baik yang diinkubasi selama satu bulan maupun dua bulan atau kontrol tidak menunjukkan perbedaan yang nyata. Meskipun demikian, ada indikasi yang ditunjukkan oleh waktu inkubasi, semakin lama kayu diinkubasikan maka semakin berkurang daya tahan beban tiba-tiba dari kayu.Keywords: Pinus kesiya Royle ex. Gordon, blue stain, toughness
Analisis Spasial Degradasi Hutan dan Deforestasi: Studi Kasus di PT. Duta Maju Timber, Sumatera Barat Mulyanto, Lukman; Jaya, I Nengah Surati
Jurnal Manajemen Hutan Tropika Vol. 10 No. 1 (2004)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

This study develops a predictive model on forest degradation and deforestation in Duta Maju Timber concession area West Sumatera during 1999 and 2002 period. The study found that the likelihoods of the forest degradation and deforestation are significantly affected respectively by distance from villages/settlement centers (X1), distance from rivers/streams (X3), distance from public road/logging roads (X2) and the age of logged over forest (X4). The probality of forest changes was negatively correlated with the distance from the villages and the age of logged over forest. While the rest variables (X3 and X2) are positively correlated. The best predictive model obtained for predicting forest degradation and deforestation was the logistic model (y =(10-7,64).X4-23,565.X1-6,889 . X35,505. X23,712) having considerably high coefficient correlation.
The Effects of Climatic Variations on Peat Swamp Forest Condition and Peat Combustibility Lailan Syaufina; Ahmad Ainuddin Nuruddin; Jamaluddin Basharuddin; Lai Food See; Mohid Rashid Mohd Yusof
Jurnal Manajemen Hutan Tropika Vol. 10 No. 1 (2004)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Studi tentang pengaruh variasi iklim terhadap kondisi hutan rawa gambut dan kemampuan terbakar gambut ini dilaksanakan di Hutan Simpan Sungai karang, Tanjong Karang, Selangor, Malaysia. Tujuan dari studi ini adalah untuk menentukan: 1) Variasi iklim di daerah penelitian , 2) Pengaruh variasi iklim terhadap kondisi hutan rawa gambut; 3) Kemampuan terbakar gambut dan faktor-faktor yang mempengaruhinya; dan 4) Pengaruh kebakaran hutan terhadap kondisi hutan rawa gambut. Studi ini dilakukan di kompartemen 127 selama dua periode, yaitu: Oktober 1999 sampai Januari 2000 dan Mei 2000 sampai Oktober 2000, sementara, studi tentang pengaruh kebakaran dilakukan di kompartemen 132 dari Oktober 1999 sampai dengan Januari 2000. Studi ini mengklasifikasikan musim kemarau dan musim penghujan sebagai periode dengan curah hujan bulanan berturut-turut kurang dari atau sama dengan 125 mm dan lebih besar dari 125 mm. Daerah penelitian memiliki dua periode kering, yaitu: Januari, Februari, dan Maret sebagai periode pertama dan Mei sampai Agustus sebagai periode kedua. Secara statistik, musim berpengaruh pada kadar air, bulk density, potassium, magnesium, sodium dan tinggi muka air. Dengan menggunakan prediksi curah hujan mingguan, kadar air kritis dari lahan gambut terhadap kebakaran adalah 355 %.Keywords:  climatic variations, peat swamp forest, forest fire, peat combustibility
Epidemiologi Hawar Daun Bibit Pinus Merkusii yang Disebabkan oleh Pestalotia theae Sutarman; Hadi, Soetrisno; Saefuddin, Asep; Achmad; Suryani, Ani
Jurnal Manajemen Hutan Tropika Vol. 10 No. 1 (2004)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The objectives of the study are as follows: to know the interrelationships between the weather components as well as Pestalotia theae's aerial conidiospore population and the development of needle blight on Pinus merkusii seedlings, and to determine the effect of nursery site on the early development of the disease. Two week's average without interval model is the most reliable model to be used for determining the interrelationship between the development of the disease severity and the weather components. Light duration, rain fall, relative humidity and temperature are the weather components significantly affect the increase of the disease severity. The nursery in Pongpoklandak, Cianjur (26,5 - 30,5 oC; RH: 92-98 %), West Java, is the most optimal location for the development of the disease. To maintain the Disease Index at the most about 25 on seedlings over 6 months old, is the key factor for the successful management of needle blight on P. merkusii seedlings in the nursery.
Nilai Ekonomi Air Domestik dan Irigasi Pertanian: Studi Kasus di Desa-Desa Sekitar Kawasan Taman Nasional Gunung Halimun Widada; Darusman, Dudung
Jurnal Manajemen Hutan Tropika Vol. 10 No. 1 (2004)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The hydrological function of Gunung Halimun National Park (GHNP) has enormous benefit for local people. To predict the monetary benefit of water stemming from the park, the research was conducted by taking 13 representative samples of villages surrounding GHNP. Through the economic valuation, this research found out that the total economic value (TEV) water was Rp 6.64 billion per year, consisting of water value for domestic uses (Rp 5.22 billion), and water value for agriculture uses (Rp 1.42 billion). The TEV of the water equal to Rp 6.64 billion (Rp 173.278,47 per ha) is representing economic benefit value of water stemming from area TNGH for the community of 51 villages which abut on direct by TNGH. The monetary value certainly will be bigger if we look at the area broader as the all area of watershed function. The enormous benefit value of water (domestic and the agriculture) prove that development of conservation area (in this case is GHNP) do not oppose against economic development.

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