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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 547 Documents
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Landslide Detection Technique using multidate SPOT Imageries: A case study in Teradomari, Tochio and Shitada Mura, Niigata, Japan I Nengah Surati Jaya
Jurnal Manajemen Hutan Tropika Vol. 11 No. 1 (2005)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

This study describes the use of multitemporal  principal component analisys (MPCA), vegetation index differencing (VIDN) and  conventional maximum likelihood classifier (MLC) for  detecting landslides.  The study found that the synthetic images derived from stable greenness, delta greenness and delta brightness of MPCA summarized the information of landslides effectively producing accuracy of 88% for Teradomari and 91% for Tochio and Shitada Mura.  The VIDN provides relatively lower accuracies than those from MPCA, i.e., only 62.5% for Teradomari and 64% for Tochio and Shitada Mura. The MLC method also provided very low user’s accuracy, i.e. 56.9% for Teradomari and 63.7% for Tochio and Shitada Mura but high producer’s accuracies, i.e. 100% for Teradomari and 98.3% for Tochio and Shitada Mura. The study also found that the landsides that could be detected should be more than the size of spatial resolution of the SPOT imagery, i.e. 10 m x 10 m. Detecting landslides using SPOT imagery is more efficient than using only ground survey, providing an efficiency of 2.7.
Kajian Pengembangan Produk Wisata Alam Berbasis Ekologi di Wilayah Wana Wisata Curug Cilember (WWCC), Kabupaten Bogor Qurie Purnamasari; Andry Indrawan; EKS Harini Muntasib
Jurnal Manajemen Hutan Tropika Vol. 11 No. 1 (2005)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Recreation development is usually oriented toward on the mass tourism to maximise a number of tourists and rarely put the environmental aspect into consideration.  This created an effect on the sustainability of ecology.  This study’s emphasis is on figuring out an alternative of outdoor recreation product which based on the ecology aspect to support the development of outdoor recreation in the Wana Wisata Curug Cilember (WWCC). This study put the characteristic of tourist and local people into consideration which are describe the product of ecology recreation in order to achieve an ideal product that has not been reached previously and still need more serious effort.  Analysis descriptive with qualitative and quantitative approach is used in this study.  SWOT (Strengths, Weaknesses, Opportunities, Threats) and descriptive statistic are considered for alternative outdoor recreation product while the AHP (Analysis Hierarchy Process) has been  used to achieve a priority product for implementation.  The findings suggested a diversification strategy or S-T (Strengths – Threats) was chosen to develop the products of recreation in WWCC.  The priority of these products based on the AHP value are as follows: a) Water falls (0.2700), b) Natural scenery (0.1623), c) Camping (0.1405), d) Hiking (0.1073), e) Theraphy of water fall energy (0.0885),  f) Plants viewing (0.0665), g) Wildlife viewing (0.0525) and h) Outbound (0.0380).
KAJIAN KOMPETISI TUMBUHAN EKSOTIK YANG BERSIFAT INVASIF TERHADAP POHON HUTAN PEGUNUNGAN ASLI TAMAN NASIONAL GUNUNG GEDE PANGRAN Budi Utomo; Cecep Kusmana; Sukisman Tjitrosemito; Muhammad Nur Aidi
Jurnal Manajemen Hutan Tropika Vol. 13 No. 1 (2007)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Up to now, montane rain forest of Gunung Gede-Pangrango National Park, faces problem in the form of invasion of exotic plant species into the area.  Location of the area that borders with various land uses, such as Botanical Garden and agricultural land, make it very susceptible toward invasion of plant species from outside the area.  The collapse of large trees which normally constitute a mechanism of natural regeneration, was in fact stimulating the development of exotic species, particularly those which were invasive, inside the area. The objective of this research was to test the competitive ability of endemic species, which in this case was represented by Cleystocalyx operculata and Mischocarpus pentapetalus, toward exotic plant species, represented by Austroeupatoriun inulaefolium and Passiflora ligularis, during 5 months of study.  Growth rate of exotic plant species, as well as the dry weight biomass, were larger than those of endemic species.  Indirect estimation of competitive ability showed that competitive ability (β) of endemic species were 4-5 times less, namely 0.0274 (for C. operculata) and 0.0251 (for M. pentapetalus); as compared with those of exotic species, namely 0.125 (for P. ligularis) and 0.1104 (for A. inulaefolium).  Direct test also proved that competitive ability (β) of endemic species was lower than that of exotic species, as shown by relative crowding value < 1.  Estimation of future competitive ability, using diagram of input/ output ratio, showed also the disability of endemic species to compete with exotic species, where position of input/output ratio points were parallel with equilibrium line y=x. Considering those facts, there is urgent need for controlling these invasive exotic species inside the National Park area to maintain the sustainability of biodiversity and regeneration of endemic species in montane rain forest of Gunung Gede–Pangrango National Park.
UJI KETURUNAN SAUDARA TIRI ( Half - sib ) SENGON ( Paraserianthes falcataria L. Nielsen) DI TAMAN HUTAN BLOK CIKABAYA Ali Mukmin; Iskandar Zulkarnaen Siregar
Jurnal Manajemen Hutan Tropika Vol. 13 No. 1 (2007)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Analysis of genetic parameters in seedling seed orchard progeny trial of Paraserianthes falcataria at Taman Hutan Blok Cikabayan are very important to decide to continue  the breeding program.  The analysis was coducted on estimation of individual heritability and genetic correlation between traits. Result of analysis shows that individual heritability for height, diameter and form traits.  
STRATEGI PENGEMBANGAN USAHA PERSUTERAAN ALAM DI KABUPATEN SUKABUMI, PROPINSI JAWA B Nurheni Wijayanto; Eva Fauziah
Jurnal Manajemen Hutan Tropika Vol. 13 No. 1 (2007)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The striving of nature silk in Kabupaten Sukabumi keeps decreasing whereas, market opportunity and potential for nature is good, for this time being. For knowing development strategic of striving nature silk correctly, it need to be done an aprroachment system of replacement SWOT analysis  (strategis analysis) and ISM (interpretative Structural Modelling) technique (structural analysis). This research will identify internal and external factor and produce structural models.The most powerful factor that influence the striving of nature silk is nature condition (climate, soil and topography).  The weakness factor are limited capital and access.  As opportunity element factor and treatment of cocoon needs still high and germ and disease of murbei leaves also silk worm.Prosperity of nature silk worm influence a lot of society sector especially farmer.  In way to make it success needs very qualified human resources, an expert on this work and good management.  Hoped with fulfilled need, will solved a lot of obstructions one of them is limited capital and access.  The purpose of this program as good as possible is for increasing nature silk work.  Involved all sorts of institution to realize this aim will be need, one of them is Forestry Department which will decide fact in striving of nature silk.
Biomass Distribution of Cajuput Stand in Central Kalimantan Swamp Forest Alpian; Tiberius Agus Prayitno; Johanes Pramana Gentur Sutapa; Budiadi
Jurnal Manajemen Hutan Tropika Vol. 19 No. 1 (2013)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

In Central Kalimantan, cajuput (Melaleuca cajuputi subsp. cumingiana) mostly can be found in the riptide swamp area. The present research was intended to determine the distribution of biomass based on the part of tree, position to the ground surface, growing stage, and allometric equation models to estimate the prospective of biomass in 2 different locations (A and B). The A and B locations were characterized by type B riptide peat swamp forest (high tide effected with peat thickness of 51-100 cm) and type C riptide peat swamp forest (tide unaffected shallow soil of < 50 cm with peat thickness of 101-200 cm), respectively. The distribution of cajuput biomass based on the part of tree, position to the ground surface, and growing stage in both locations indicated a similar pattern. Stem contained the highest biomass followed successively by that of root, branch, leave, fruit, and flower. Biomass above the ground was also higher than that of below the ground. Furthermore, biomass content of poles was the highest, followed successively by that of sapling, tree, and seedling. Allometric equation models used to estimate biomass of the A location in the state of green, air dry, and oven dry were 0.335D2,35, 0.143D2,42, and 0.128D2,41, respectively. While those in the B location for green, air dry, and oven dry state were 0.279D2,48, 0.127D2,58, and 0.114D2,56, respectively. The potential of biomass in the A and B location were 144,100 and 127,212 ton ha-1, respectively.
Collective Action Typologies and Reforestation in Indigenous Community of Biak-Papua Henry Silka Innah; Didik Suharjito; Arya Hadi Dharmawan; Dudung Darusman
Jurnal Manajemen Hutan Tropika Vol. 19 No. 1 (2013)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

While there are issues in deforestation with interesting reports on reforestation in Indonesia's forest policy, the situation in Papua remains understudied. This paper builds on the themes of collective action and reforestation from indigenous people of Papua. Collective action can be understood from various perspectives and one of them can be studied within Gamson's socio-psychology framework from social movement theories. The results showed that: collective action in indigenous people of Biak-Papua was connected to their collective identity, solidarity, consciousness, and was facilitated by micromobilization. There were 4 typologies of collective action for reforestation in Biak: (1) collective action with initiative of collectivity in the group supported by external forces, (2) collective action driven by village leaders that have the authority from the government, (3) collective action driven by informal leaders (genealogical/kinship based traditional leaders), and (4) collective action driven by an outsider that has obtained legitimacy of customary, because of marriages. Taking into account its potentials and dynamics, mutually beneficial collective action is believed to be able to support the success of reforestation and forest management in Papua.
Assessment of Forest Road Network Alternatives for Pine Resin Extraction Ahmad Budiaman; Heryana
Jurnal Manajemen Hutan Tropika Vol. 19 No. 1 (2013)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Pine resin, one type of non-timber forest products (NTFPs), is important for Indonesia. In addition to its high economic value, pine resin also has bright domestic and international market prospects. Utilization of commercial pine resin has been carried out in Indonesia, but the forest road network required for extracting pine resin has not been specifically planned. To date, the planning and selection of forest road network in forest management in Indonesia are intended only for the extraction of timber products and have not been integrated with the use of NTFPs; also, they have not considered the economic, ecological, and social aspects a whole. Planning and selection of forest road network have focused more on economic aspects only. This study aimed at planning and assessing the forest road network for extracting pine resin by considering the economic, ecological, and social criteria. Decision-making method used to select the best forest road network was utility analysis. Indicator used included road length, road density, a correction factor for manual carrying of pine resin, pine resin carrying distance, road construction cost, and productivity of carrying and extracting pine resin. The result of the utility analysis indicates that an alternative of forest road network for extracting pine resin has no the whole best indicators, but it has the highest utility value. This study suggested that the use of the utility analysis help the decision makers to selects process for forest road network alternative easily and rapidly.
Javan Rhino (Rhinoceros sondaicus Desmarest 1822) Utilization Distribution and Habitat Selection in Ujung Kulon National Park Yanto Santosa; U Mamat Rahmat; Lilik Budi Prasetyo; Agus Priyono Kartono
Jurnal Manajemen Hutan Tropika Vol. 19 No. 1 (2013)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (551.899 KB) | DOI: 10.7226/jtfm.19.1.31-38

Abstract

Javan rhino (Rhinoceros sondaicus Desmarest 1822) is one of world's rarest endangered species (IUCN 2008). Currently, their distribution is limited to Ujung Kulon National Park (UKNP) of Indonesia. Natural disasters, disease, poaching, encroachment, and competition are threats facing Javan rhino's population, hence creating pockets of habitats outside the UKNP was necessary and should be based on scientific studies of javan rhino utilization distribution and habitat selection in UKNP as the natural habitat. The objectives of the study were to determine the utilization distribution of Javan rhino and its habitat characteristics and determine javan rhino habitat selection within UKNP. The research indicated that Javan rhinos highest use of areas comprised of swampy shrub (w = 2.197) and shrub (w = 2.012), relatively open habitat (w = 4.233), flat area (w = 1.313) and slightly sloping areas (w = 1.007), lowland (w = 1.346), close to river (w = 1.087), close to road network (w = 1.395), close to coasts/beaches (w = 1.862), close to wallowing areas (w = 3.709), and close to rumpang (w = 3.783). The results suggested that javan rhino showed selection and preferences for its habitat.
Land Use Conversion and Soil Properties in a Lowland Tropical Landscape of Papua New Guinea Nangu George; Rajashekhar Rao Bangadi Killur; David Lopez Cornelio
Jurnal Manajemen Hutan Tropika Vol. 19 No. 1 (2013)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (507.575 KB) | DOI: 10.7226/jtfm.19.1.39-45

Abstract

Land use conversion affects natural soil processes and can potentially decrease soils productivity. A representative area was selected to study the effects of land use conversion in Unitech Campus, Southeastern lowlands of Papua New Guinea (PNG). Area selected for the study was once covered by tropical rainforest and has been subjected to various land use types over time. Representative soil samples were collected under 4 main land use types (secondary forest, plantation forest, grassland, and agricultural garden) at 2 depths (0-0.15 m and 0.15-0.30 m) with 3 replicates per land use. Soil bulk density, water infiltration rate, and cumulative water infiltration values were significantly greater (p < 0.05) under grasslands than under secondary and plantation forests. Among soil chemical properties, extractable potassium content and pH showed significant differences (p < 0.05) among the land uses, pH values increased upon conversion of forested lands to grassland or agricultural gardens. Conversion of secondary forests into grasslands or agricultural gardens leads to depletion of Bray's phosphorus and extractable potassium. Tree-based land uses were optimum due to better nutrient cycling conditions and lower bulk density compared to grassland and agricultural garden despite the low pH conditions and lower water infiltration.

Page 22 of 55 | Total Record : 547

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