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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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Verifikasi Model Sistem Pengelolaan Tegakan Hutan Alam Setelah Penebangan dengan Tebang Pilih Tanam Indonesia (TPTI) Indrawan, Andry
Jurnal Manajemen Hutan Tropika Vol. 9 No. 2 (2003)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Lowland Tropical Rain Forest in Forest concession (HPH) PT. Inhutani II, Stagen Pulau Laut, South Kalimantan, and in forest concession PT. Ratah Timber Co, are climax forest under dynamic equilibrium, which are dominated by tree species from Dipterocarps family. Mechanical logging which is conducted in forest concession area will result in the formation of forest with certain composition and structure. Recovery of the forest is left to proceed naturally and will take a certain amount of time, and will affect the next duration of rotation. From the simulation result which were made on the basis of data from permanen plot in area of PT. Inhutani II, it was found that respond of simulation or respond of logged over natural forest management system in permanen plot, revealed that cutting cycle I after logging require ± 24 years time, whereas cutting cycle II require ± 37 years time. Model obtained from simulation result which were made on the basis of data obtained from permanen plot in area of PT. Inhutani II, is used for data which were obtained from non permanen plot at forest concession area of PT. Ratah Timber Co. Respon of simulation from forest concession of PT. Ratah Timber Co reveal that cutting cycle I after logging require ± 30 years time, whereas cutting cycle II require ± 43 years of time. This Phenomena imply that cutting cycles, are not always constant and will change in line with the composition and structure of logged over natural forest and their development with time.
Model Sistem Pengelolaan Hutan Alam Setelah Penebangan dengan Sistem Tebang Pilih Tanam Indonesia (TPRI) Indrawan, Andry
Jurnal Manajemen Hutan Tropika Vol. 9 No. 2 (2003)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The study discribes a system model of natural forest on logged over areas under selective cutting and planting system. The study departs from a fact that disturbance of forest from logging activity will affect the equilibrium of forest ecosystem including the forest stand composition. The study was performed in the forest concession area of PT. Inhutani II, Pulau Laut South Kalimantan. From the simulation results derived based upon permanent plot data, it was found that respond of logged over natural forest management system revealed that cutting cycle I after logging requires approximately 24 years, where cutting cycle II requires approximately 37 years. This expresses that cutting cycles are not consist and will change in line with the composition and structure of logged over natural forest as will as their development.
Penentuan Jumlah Pohon Contoh Minimal untuk Penyusunan Persamaan Volume Melalui Fungsi Taper: Studi Kasus pada Jenis Pinus Merkusii Jungh Et De Vriese di Hutan Pendidikan Gunung Walat, Sukabumi, Jawa Barat M Muhdin; Arif Rakhman Hakim
Jurnal Manajemen Hutan Tropika Vol. 10 No. 2 (2004)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The study departs from the fact that the most difficult activity in constructing tree volume table is measurement of diameter and length of section of standing sample trees. Besides, the number of sample trees to represent the population is also another problem. This study examines the construction of the volume equation through taper function by reducing the quantity of sample trees. Validation was also conducted for testing the accuracy of such volume equation. The study found that the best taper function was the third order polynomial model i.e., d/D=f{(h/H),(h/H)2,(h/H)3. The volume equation, constructed using only three sample trees by such taper function (V=0.3573337D2H), has almost the same good performance to equivalent the best model (V=6.14 10-5D1.8249H1.0342), that was constructed using 30 sample tree.Key words: taper function, tree volume equation, validation, accuracy, precision
Model Dinamika Sistem untuk Pengembangan Alternatif Kebijakan Pengelolaan Hutan yang Adil dan Lestari Purnomo, Herry
Jurnal Manajemen Hutan Tropika Vol. 9 No. 2 (2003)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

System dynamic is an effort to understand complexity of social and eco-systems of forest. Through this system, a conscious learning on interaction between people and forest will take place in order to manage forest in more sustainable and equitable manners. A system dynamic modeling was carried out in area surrounding Lumut Mountain Forest, District of Pasir, and East Kalimantan. In the area, where legally was allocated to a logging company, live local people who depend on forest and rattan. The policy makers are trying to improve the well-being of local people without sacrifying the logging company. Aim of the study was to give policy options to policy makers and likely impacts of those options. The built model comprises biophysical, social, policy and impact main components. The model shows the change of impact indicators, which are standing stock, community income, and concession revenue and government income, given any selected policy option.
Identifikasi dan Pemetaan Lahan Kritis Menggunakan Teknik Penginderaan Jauh dan Sistem Informasi Geografi Parsa, I Made; Wiradisastra, Uup S.; Pawitan, Hidayat
Jurnal Manajemen Hutan Tropika Vol. 9 No. 2 (2003)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The objective of this research is to develop remote sensing and GIS techniques with hydrological approach for critical land identification and mapping. This research was done by weighting method using three variables, i.e., slope, runoff curve number, and percent land cover derived from digital and visual analysis techniques. Critical land identification was known by integrating the Curve Number resulted from combination of land use and Hidrological Soil Group, Slope and Percent Land Cover. Land use and Percent Land Cover information were derived from Landsat data, while Hidrological Soil Group results were from 1:50000 soil type map, and slope was from 1;25000 scale of topographic map. Critical land modelling was done using three parameters: slope, runoff curve number, and percent land cover. This research examined thirteen a, b, and c combinations. Mapping accuracy of the model was evaluated using erosion hazard based on USLE formula: A = RKLSCP. The study shows that remote sensing data can be used to produce land use/land cover for curve number prediction and land cover percent as critical land identification and mapping variables, having an accuracy of 62.59 percent.
Kajian Teknis Penggunaan Citra IKONOS dan CASI dalam Rangka Inventarisasi Hutan: Studi Kasus di Kebun Raya Bogor Jaya, I Nengah Surati
Jurnal Manajemen Hutan Tropika Vol. 9 No. 2 (2003)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

This study examined the capability of high-resolution imageries for identifying tree species. The IKONOS and CASI (Compact Airborne Spectrographic Imager) data were examined to digitally identify 20 tree species and estimating stand density. The numerical taxonomy using nearest neighbor hierarchical classification method was applied to cluster the spectral reflectance of those species of interest. Although the panchromatic band of IKONOS and CASI have the same spatial resolution, the study shown that CASI provided better performance than IKONOS in discriminating 20 tree species of interest. The finer spectral and spatial resolution of CASI significantly improved the quantitative discrimination ability. Inversely, the IKONOS imagery was fail to digitally identify tree species. However, the study shows that both the IKONOS and CASI images are capable to be used to estimate the stand density. To get a better result of discriminating 20 species using CASI image, the number of bands hould be used more than eight bands. Otherwise, some "inseparable" class pairs could exist.
Persepsi Masyarakat Dayak Merap dan Punan tentang Pentingnya Hutan di Lansekap Hutan Tropis, Kabupaten Malinau, Kalimantan Timur Lisnawati, Nining; Indawan, Andry; ., Sumardjo; Sheil, Douglas
Jurnal Manajemen Hutan Tropika Vol. 10 No. 2 (2004)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

This study’s emphasis was on Dayak Merap and Punan people’s perception of the importance of forest. A participatory approach using scoring exercises was completed with seven forest-dwelling communities in the tropical landscape of Malinau, East Kalimantan. The findings suggest that unlogged forest was the most important land category for Dayak people. It provides for their livelihoods and well-being both directly and indirectly. ‘Forest’ has the heritage values and contains an abundance of valued and significant plants and animal. For the future, ‘forest’ is predicted to remain important for local people mainly for timber. Forests are exceptional in comparison with other land types in providing a wide range of highly valued goods and services, in most cases to a greater degree than other land types. In addition, the value of forests decreases less with apparent distances. However, logged forest is related as much less important, allowing us to consider improvements in forest management that might better protect local values.
Keanekaragaman Jenis Pohon dan Burung di Beberapa Areal Hutan Kota Bandar Lampung (Tree and Bird Species Diversity in Several Urban Forest Area of Bandar Lampung City) Agus Setiawan; Hadi S Alikodra; Andi Gunawan; Dedy Darnaedi
Jurnal Manajemen Hutan Tropika Vol. 12 No. 1 (2006)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

This study investigated the inter-relationshep between diversity of tree and bird species existed in urban forest of Bandar Lampung City. The objectives of the study on Tree and BirdSpecies Diversity in Several Urban Forest Area of Bandar Lampung City are to know a) tree species diversity composition in urban forest vegetation, b) bird species diversity, and c) the correlation between those both components. The study conducted on six areas of urban forest in Bandar Lampung City. Tree sampling was measured within plot line having 20 m x 20 m size, while bird observation was done using direct watching method which was performed every morning (06.00 ~08.00) and evening (16.00 ~ 18.00) during tree days for each urban forest area. The biodiversity parameters used in this study are Margalef Species Richness Index, Shannon Biodiversity Index, and Modified Hill’s Ratio Index of Evenness. In all urban forest areas of Bandar Lampung City wasidentified 45 tree species (24 families) with index of species richness 6.22, index of species diversity 2.92, and index of evenness 0.60. Compared to closest natural vegetation (of Wan Abdul Rachman Provincial Park) the vegetation is very different (index of similarity 0.13). The study concluded thata) urban forest vegetation of Bandar Lampung City are generally dominated by domesticated species, 2) 24 birds species (16 families) were identified in all of urban forest area of Bandar Lampung City, and c) there is positive correlation between the tree species diversity and bird species diversity in urban forest of Bandar Lampung City.
Directives for Mangrove Forest and Coastal Forest Rehabilitation in Earthquake and Tsunami Disaster Area in the Provinces of Manggroe Aceh Darussalam and Sumatera Utara (Nias Island), Indonesia Cecep Kusmana; Sambas Basuki; Sri Wilarso; Iin Ichwandi; Oteng Haridjaja; Agus Soleh; S Samsuri
Jurnal Manajemen Hutan Tropika Vol. 11 No. 2 (2005)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Peristiwa gempa bumi dan tsunami yang melanda Nanggroe Aceh Darussalam (NAD) dan Pulau Nias Sumatera Utara pada bulan Desember 2004 telah mengakibatkan rusaknya sebagian besar hutan mangrove dan hutan pantai di kedua wilayah tersebut. Berhubung kedua tipe hutan tersebut sangat penting untuk menopang kelangsungan hidup penduduk pantai, maka penelitian ini dilakukan untuk mendapatkan arahan rehabilitasi hutan mangrove dan pantai yang rusak akibat tsunami di NAD dan Pulau Nias. Hasil penelitian menunjukkan bahwa wilayah pantai yang tanahnya berupa tanah mineral yang bukan lumpur dengan salinitas yang tinggi (di atas 10 0/00) seyogyanya ditanami oleh jenis mangrove eklusif (Rhizophora stylosa, R. apiculata, Sonneratia alba, Ceriops tagal dan Aegeciros floridum) dan mangrove asosiat (Osbornea octodonta dan Scyphiphora sp.), tanah bukan lumpur dengan salinitas rendah oleh berbagai jenis pohon hutan pantai (Casuarina equisetifolia, dan lain-lain), tanah lumpur bersalinitas tinggi oleh Avicenia spp. dan R. Mucronata; dan tanah gambut seyogyanya ditanami oleh Bruguiera gymnorrizha. Adapun lebar  jalur hijau vegetasi yang disarankan adalah minimal 225 m untuk wilayah NAD dan 211 m untuk wilayah pulau Nias. Untuk merealisasikan kegiatan rehabilitasi vegetasi pantai yang bersifat multitahun di NAD dan Nias maka kegiatan rehabilitasi tersebut harus ditempatkan dalam rangka pembangunan daerah.
Nilai Ekonomi Total Hutan Kayu Putih: Kasus di Desa Piru, Kabupaten Seram Bagian Barat, Provinsi Maluku Parera, Evelin; Darusman, Dudung; Simangunsong, Bintang
Jurnal Manajemen Hutan Tropika Vol. 12 No. 1 (2006)
Publisher : Institut Pertanian Bogor (IPB University)

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An undervaluation of melaleuca forest (MF) needs to be adressed since it affects a management of MF. Type of goods and services produced by MF were indentified. Their values were assessed using Forest Valuation tehniques such as market price and replacement cost methods and then used to determine the value of MF using total economic value (TEV) approach. The result showed that TEV of MF was aboutRp.1,6 million/ha/year (forest flow value). Water had the highest value ofRp.1,04 million/ha/year (or 66% of TEV) followed by leafs ofRp.0,4 million/ha/year(or 24% of TEV). The rest comprised of water, flora and fauna valueswas ofRp. 0,03 million/ha/year (or 1,6% of TEV). The value of MF was estimated about Rp.36 million/hectare (forest stock value).

Page 8 of 54 | Total Record : 537

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