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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 537 Documents
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Budidaya Jamur Kuping (Auricularia auricula [Hook] Underw.) dalam Tegakan Hutan pada Substrat Log Kayu Afrika (Maesopsis eminii Engl.) IGK Tapa Darma
Jurnal Manajemen Hutan Tropika Vol. 6 No. 1 (2000)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Ear mushroom (Auricularia auricula (Hook) Underw.) were produced by cultivating the fungus on logs of kayu afrika (Maesopsis eminii Engl.). The logs of 60 cm long having a diameters of 19-25 cm were first solar dried for two months and subsequently soaked in water for three days. Thereafter, they were inoculated with the fungus by placing the inocula in the 3-4 cm deep holes made by boring the superficial part of the logs and then the inoculated logs were incubated in the room by wrapping with black polyethylene sheet for 18 days. The experiment of the cultivation was carried out with the treatment of the incubated logs as follows: i) logs placed on the forest floor and covered with black polyethylene sheets (0.3 mm thick), ii) logs were placed on the forest floor and covered with sisal sacs, iii) logs were hanged on the tree stem and covered with black polyethylene sheets, and iv) logs were hanged on the tree stem and covered with sisal sacs. Similar conditionings and treatments were also given to fresh logs (without solar drying). The experiment was also designed to find out whether cultivating the logs under laboratory conditions affect the growth and the formation as well as the development of the fruiting bodies of the fungus. Fruiting bodies were formed on dried logs 24 days after inoculation or 6 days after cultivation, whereas none was formed on fresh logs placed in the forest stand, also, fruiting bodies was not formed on all logs placed in the laboratory. There after, every 6 days, harvesting of the mushrooms could be carried out for as long as one month (5 times harvestings). The largest mushroom production proved to be on logs hanged on the tree stem and covered with the sisal sacs.
The Establishment of Forest Plantation Widowati, Arti; Haneda, Noor Farikhah
Jurnal Manajemen Hutan Tropika Vol. 5 No. 1 (1999)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The establishment of forest plantation of Eucalyptus deglupta in the humid tropic, for pulp and paper industry has so far been hindered seriously by insect stem borer larvae (Zeuzera coffeae ), damaging young and mature stands, and cause important financial lost. Coupling with integral forest pest management and good silvicultural treatements, a strategy for resistance breeding program to stem borer larvea need to be developped for that promising species, in order to establish sound industrial plantation and to accelerate genetic gain achievement per unit time. This study deal with the assement of E. deglupta woods properties, (including anatomical, physicals properties, and chemical substances), that may supposedly be directly implied in resistency mechanisms of Leda againts insect stem borer attack. The preliminary results indicated that sound, tolerant and resistant indvidual trees tend to have higher wood density, than unhealty one. Sound, resistant and tolerant trees tend also to have greater and statistically different in fiber length, fiber diameter, cells walls thickness and lumen diameter than that of unhealty one, especially from that one that have been fortly attacked by stem borer. The preliminary results also indicated that resistance trees tend to exhibit more alcaloid, terpenoid and flavonoid content than the unhealty one. However, the results need to be confirmed by addition of more wood samples to be analyzed for each type of degree of insect injury.
Monitoring Vegetation Changes In Urban Area Using Landsat TM Imagery I Nengah Surati Jaya
Jurnal Manajemen Hutan Tropika Vol. 6 No. 1 (2000)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Paper ini mengulas tentang manfaat data penginderaan jauh, khususnya data Landsat TM untuk memantau dan mengumpulkan informasi tentang perubahan penutupan lahan di areal perkotaan yang mencakup perubahan penutupan yang terjadi antara tahun 1988 dan 1992 di sebagian kota Jakarta dan sekitarnya. Tiga metode deteksi perubahan yang diterapkan adalah : Perbandingan paska-klasifikasi (PCC) Klasifikasi multiwaktu langsung (DMC) Komponen utama multiwaktu 6-dimensi (6-D MPC). Hasil kajian memperlihatkan bahwa ketiga metode di atas dapat diterapkan untuk mendeteksi perubahan penutupan lahan di daerah perkotaan dan sekitarnya. Dari ketiga metode tersebut, meskipun metode DMC memberikan akurasi sedikit lebih tinggi daripada metode 6-D MPC, namun metode 6-D MPC memberikan beberapa keunggulan, diantaranya (1) perubahan vegetasi dalam luasan kecil dapat dideteksi dengan mudah melalui evaluasi nilai-nilai ¡§eigenvector¡; (2) deteksi perubahan lahan dapat dilakukan menggunakan beberapa band sintetis dengan jumlah band lebih sedikit dibandingkan DMC dan merangkum perubahan-perubahan yang dikehendaki serta klasifikasi dapat dilakukan lebih cepat. Penerapan metode PCC dikategorikan sebagai metode yang komplek, dimana untuk melokalisir lokasi perubahan, harus dibuat binary-mask perubahan  terlebih dahulu. Kajian ini juga menerangkan bahwa Landsat TM multiwaktu dapat digunakan untuk mendeteksi perubahan-perubahan kecil di daerah perkotaan.
Pembakaran Terkendali Sebagai Metoda Alternatif dalam Pencegahan Kebakaran Hutan di Hutan Tanaman Acacia mangium Saharjo, Bambang Hero
Jurnal Manajemen Hutan Tropika Vol. 5 No. 1 (1999)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Prescribed burning was well done in Acacia mangium plantation without any trees damaged or dead and no natural regeneration found in the forest floor after fire. Fuel load 3 ton/ha and fuel bed depth 8 cm can be used as a standard for it. Flame temperature reached from 149 °C and 170 °C, and flame length 0.74-0.93 m can safe the plantation for any damage. Three months after burning there was an accumulation of fuel load in the forest floor, therefore 3 months interval is a good solution in preventing the forest from fire invasion.
Studi Kemampuan Tumbuh Anakan Mangrove Jenis Rhizophora mucronata, Bruguiera gimnorrhiza, dan Avicennia Marina Pada Berbagai Tingkat Salinitas Eben Ezer Hutahaean; Cecep Kusmana; Helmy Ratna Dewi
Jurnal Manajemen Hutan Tropika Vol. 5 No. 1 (1999)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Salinity is one of environmental factors having an important role in controlling mangrove growth. Our research results show that the degree of salinity has significant effect on the height seedling growth of Rhizophora mucronata, Bruguiera gimnorrhiza and Avicennia marina. Its salinity has also significant effect on the leaf growth of two later species. In general, the highest growth of both seedling’s height and the number of leaf for all species occur on the salinity ranged from 0.0 to 7.5 ppt.
Pengkajian Penerapan Teknik Budidaya Rhizophora mucronata dengan Stek Hipokotil Mulyani, Neni; Kusmana, Cecep; Supriyanto
Jurnal Manajemen Hutan Tropika Vol. 5 No. 1 (1999)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Research on the vegetative propagation of Rhizophora mucronata using hypocotyl cutting sistem was carried out at Faculty of Forestry, Bogor Agricultural University. Histological analysis of adventitous shoot was done at Biotechnology and Tree Breeding Laboratory, SEAMEO-BIOTROP. Three types of hypocotyl cutting (complete hypocotyl, top part of cut-hypocotyl and bottom part of cut-hypocotyl) were induced using 6-BAP hormones at 0 and 500 ppm. Adventitous shoot of bottom part of cut-hypocotyl appeared 140 days after planting. Shoot from complete hypocotyl and top part of cut-hypocotyl grew earlier than adventitous shoot from bottom part of cut-hypocotyl. Hystologycal analysis of adventitous shoot showed the existance of primary meristem, stipule and leaf primordia. The growth of complete hipocotyl was higher than both of top part of cut-hypocotyl and bottom part of cut-hypocotyl. There was no effect of hormone induction on the shoot growth of them.
Detecting Burnt Forest Damage Using Digital SPOT Imagery I Nengah Surati Jaya
Jurnal Manajemen Hutan Tropika Vol. 6 No. 1 (2000)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Mendeteksi kerusakan hutan melalui metode inventarisasi terestris dan/atau potret udara membutuhkan biaya yang mahal dan memakan waktu, khususnya untuk luasan yang besar. Dalam paper ini, penulis menguraikan kegunaan dari citra SPOT dijital untuk mendeteksi kondisi hutan paska kebakaran. Evaluasi dilakukan terhadap empat kelas kerusakan hutan yang terbakar. Studi ini memperlihatkan bahwa citra SPOT multispektral dapat digunakan untuk mengklasifikasi hutan terbakar menjadi kelas dengan tingkat kerusakan ringan, sedang, berat dan sangat berat. Analisis spasial yang juga dilakukan dalam studi ini memperlihatkan bahwa sebagian besar areal studi termasuk kategori kebakaran berat dan sangat berat. Meskipun hutan-hutan bekas tebangan baru cenderung mengalami intensitas kerusakan yang tinggi, kebakaran yang terjadi tahun 1998 tidak hanya membakar hutan bekas tebangan baru tetapi juga hutan bekas tebangan tua dan hutan primer.
Anatomi Jaringan Kayu Terserang Penyakit Lapuk Kayu Teras Nuhamara, Simon Taka; Hadi, Soetrisno
Jurnal Manajemen Hutan Tropika Vol. 5 No. 1 (1999)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

A study was undertaken to determine the anatomical structures of decaying heartwood in the stem part of Acacia mangium Willd where the branch stubs were found. Sections of the decaying heartwood were made and the microscopical features were recorded. Compartmentalization of the decaying heartwood was observed and the walls of the compartment is characterized by the discoloration of the wood tissues suspected to be associated with the blocking of the vessels and pits, formation of tylosis, deposition of gum, and formation of axial parenchyma. The branch stub on the stem is known to be the entry point for different microorganisms leading to the heart-rot development by heartwood decaying fungi.
Pendugaan Biomassa Pohon Berdasarkan Model Fractal Branching pada Hutan Sekunder di Rantau Pandan, Jambi Prijanto Pamoengkas; Meine van Noordwijk; I Indrawan
Jurnal Manajemen Hutan Tropika Vol. 6 No. 1 (2000)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Fractal branching analysis is a model of indirect estimation on tree biomass that based on the diameter and length of branches. This model put on assumption that the stem diameter before and after branching have the same value which formulated into functional relationship Y = a Db. The research aimed to find out the equation estimation of rubber trees biomass then compared to the equation of corrected biomass after Brown (1997). From this study, it has been found that the equation of above ground biomass for rubber trees is Y = 0.095 D2.62 and non rubber trees Y = 0.091 D2.59 while the equation of aboveground biomass after Brown (1997) is Y = 0.092 D2.60. Based on that grouping in which fractal branching model as a simulation of the Brown model has resulted the same graph. Beside that, the advantage of using this model is that the weight of stem should not be measured because tree biomass can be estimated by measuring the stem diameter
Aplikasi Inderaja dan SIG untuk Monitoring Keberhasilan Reboisasi di Kabupaten Kupang Propinsi Nusa Tenggara Timur Irmadi Nahib; Jaya Wijaya
Jurnal Manajemen Hutan Tropika Vol. 5 No. 2 (1999)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Sspatial forestry data are inexorably needed to support the reforestation activities. By using multi-temporal data, reforestation activities can be identified and detected. To accomplish the purpose, this research used Landsat TM data acquired in 1990 and 1995. Remotely sensed data and Geographic Information System (GIS) are methods that can be applied together, to monitor as well as analyze data swiftly and accurately. This research used remotely sensed data to collect land cover features in given area. Geographic Information System is used to capture and to analyse reforestation data. The expected outcome is GIS based forest management strategy making.

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