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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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Penerapan Reduced Impact Logging Menggunakan Monocable Winch Yosep Ruslim
Jurnal Manajemen Hutan Tropika Vol. 17 No. 3 (2011)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Forest harvesting still encounters many problems especially concerning impact to the residual stand and environmental damage. Implementing the reduced impact monocable winch and planning of good skid trails should have a positive impact on work efficiency as well as, reducing damage to the residual stand and soil during felling and skidding activities. Reduced impact logging (RIL) with a monocable winch (Pancang Tarik) system has been tried in several IUPHHKs and it can be concluded that RIL monocable winch system could be applied practically and reduce impact on residual stand and soil damage. Using this technology has many advantages, among others: cost efficiency, locally made, environmental friendly, and high local community participation. Application of the monocable winch system in reduced impact logging is an effort to reduce economical and environment damages when compared to conventional system of ground based skidding with bulldozer system. The aim of this research is to verify the efficiency (operational cost), effectiveness (productivity) and time consumption of monocable winch system. The results indicate that the implementation monocable winch system, has reduced the soil damage as much as 8% ha-1. The skidding cost with monocable system is Rp95.000 m-3. This figure is significantly cheaper if compare with ground base skidding with bulldozer system in which the skidding cost around Rp165.000 m-3.
Land Rights of Community Forest Plantation Policy: Analysis from an Institutional Perspective Bramasto Nugroho
Jurnal Manajemen Hutan Tropika Vol. 17 No. 3 (2011)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (74.813 KB) | DOI: 10.7226/jtfm.17.3.111

Abstract

This study aimed to describe the land rights of bussiness permit for timber utilization from community forestplantation (IUPHHK-HTR) in Indonesia and to predict its effectiveness based on property rights theory relatedto target group characteristics. Field survey was conducted in November 2008 to April 2009 in Riau and SouthKalimantan Provinces. The results showed that from the property rights theory perspective, the land rights forHTR could be categorized as lease or management rights consisted of rights to exclude, to manage, to use, andto access, without rights to transfer and to bequeath. This suggests that the mechanism of transfer of rights from the government to the holder of IUPHHK-HTR as a temporary transfer of rights. As a result, the government needs to regulate a rigid and detailed obligation for IUPHHK-HTR holders that may not be fulfilled by the farmers. The granting of permits for a long period (up to 95 years) is predicted to lose the meanings, caused of the prohibition on inheritance of the permits. From these findings it is predicted to reduce the interest of farmers to invest in the HTR.
Respons Hidrologi Akibat Deforestasi di DAS Barito Hulu, Kalimantan Tengah Moch. Anwar; Hidayat Pawitan; Kukuh Murtilaksono; I Nengah Surati Jaya
Jurnal Manajemen Hutan Tropika Vol. 17 No. 3 (2011)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The landcover change, particularly deforestation, can to affect of hydrological response on watershed.Deforestation of natural forest is identical to degradation of watershed functions, such as loos of land productivity due to increased soil erosion, runoff, evapotranspiration, and decreased of water storage. The main objective of this study is describes the hydrologic response on the Barito Hulu watershed due to landcover change (particularly deforestation) by the use Soil and Water Assessment Tool (SWAT) model. The result of the study showed that decreasing of forest area was 9.51% from initial condition can increase water yield, evapotranspiration, and erosion as much as 8.52%, 5.94%, and 1.73 t ha-1 year-1, respectively. Otherwise, water storage decreased as much as14.46%. The landcover on 1990 with rainfall 3,117.10 mm year-1 provided water yield of approximately 1,387.13 mm, evapotranspiration of 1,152.10 mm, water storage of 577.87 mm, and erosion of about 20.52 t ha-1 year-1. The landcover on 2003 with rainfall 2,613.2 mm year-1 provided water yield of approximately 1,385.50 mm, evapotranspiration of 1,121.10 mm, water storage of 106.60 mm, and erosion of about 33.15 t ha-1 year-1 with erosion tolerance of about 43.57 t ha-1 year-1.
Kesiapan Produsen Mebel di Jepara dalam Menghadapi Sertifikasi Ekolabel Herry Purnomo; Rika Harini Irawati; Ririn Wulandari
Jurnal Manajemen Hutan Tropika Vol. 17 No. 3 (2011)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.766 KB) | DOI: 10.7226/jtfm.17.3.127

Abstract

Furniture is a big 4 of Indonesia’s export commodities with palm oil, textiles, and rubber outside the oil and gas. Value-added is enjoyed by tens of millions of people involved in the value chain. But, the business is experiencing severe challenges to the issue of certification and forest products (green or certified furniture) and the scarcity of wood. Certified furniture is intended for preservation of forest resources, the healthy processing of furniture making as well as improving the welfare of artisans. From the supply side of certified furniture, large producers have been prepared while small producers are not ready. From the demand side, domestic consumers only want to pay less for certified furniture, while British and Norway consumers are 16% 7.5% respectively. The increase in willingness to pay is lower than the certified furniture prices increased between 6–30%., Certification can be done by a third party accredited by the Tropical Forest Trust (TFT), Indonesian Ecolabel Institute (LEI), or Forest Stewardship Council (FSC). When the increase in production costs are higher than the desire of consumers to pay, then the certified furniture becomes difficult to be realized. Need specific strategies to market certified furniture. This article is a case study in Jepara furniture craftsmen who accounted for 10% of national exports.
Pemanfaatan Ekosistem Mangrove bagi Minimasi Dampak Bencana di Wilayah Pesisir Emi Karminarsih
Jurnal Manajemen Hutan Tropika Vol. 13 No. 3 (2007)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Indonesian beach region laid down in the critical area on nature disaster like tsunami. Tsunami on December 26, 2004, has greatly destroyed beach region in several  districts in NAD and Nias.  This disaster had raised responses from Indonesian people, especially on attempt to reserve the beach area to  decrease the damaged of tsunami.  One  effort  on rehabilitation  the  damaged beach area were    through planting mangrove. Mangrove forest ecosystem are a unique beach ecosystem about form of steam, canopy and root system.  Growth the best on muddy beach with influenced by the high and low tide and salty water.   This vegetations have many important as a nature reserve beach area especially to minimized the disaster of tsunami. Besides this, the area and distribution of ecosystem mangrove  has decrease by continue until now. Tsunami on December 26,  2004 has bring the nations of Indonesia more be awared on the important to protect and conservation of mangrove forest. Government, private, and NGO, have the prioritas of savety beach area by planting mangrove.
Model Penduga Produksi Kopal Wien Setya Budhi Irawan; Endang Suhendang; Juang Rata Matangaran
Jurnal Manajemen Hutan Tropika Vol. 13 No. 3 (2007)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The objective of this study was to find out the prediction model  for copal production (Y) by  the use of prediction variables. The variables were diameter (X1), bark thicknesses (X2), stand density (X3), slope (X4), and direction of the slope (X5). The study was conducted at Senduro Forest District, Probolinggo Forest Management Unit of Perum Perhutani, Unit II East Java. Data was collected from 80 sample trees of Agathis loranthifolia Salibs which were tapped on August 2006.  The  result of the study showed that there were several  regression prediction models  for  copal production:  doubled linear, multiplicative, exponential and quadratic regression models. Multiplicative regression model with the highest  R2-adj  value was  then chosen  as the best prediction model  for  copal production.  Thereby, production estimation model of copal production of Agathis loranthifolia Salis. was  LogY = 0.397 + 1.54 LogX1 + 0.496 LogX2  -  0.528 LogX3 + 0.201 LogX4  ; or Y = 2.4945X11.54X20.496X3-0.528X40.201; R-Sq =84.7%, R-Sq(Adj) = 83.7%.  Keywords:  multiplicative regression model, copal, diameter, bark thickness, stand density, slope
Spacing and Genotype on Height and Diameter Growth of Four Eucalyptus under Short Rotation Balozi B Kirongo; Angela S Mbelase; Kingiri Senelwa; Joseph Hitimana; Lazare Etiegni
Jurnal Manajemen Hutan Tropika Vol. 18 No. 1 (2012)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

In this paper, the dynamic change in tree height, diameter at breast height (dbh), and ground line diameter (gld) at different density was studied. Trial sites were established in Chepkoilel and Nangili areas of western Kenya. Eight tree species (2 hybrid eucalyptus clones; GC 10 and GC 167), 1 eucalyptus local landrace, 2 agroforestry (Grevillea robusta and Markhamia lutea), 1 pure eucalyptus (Eucalyptus grandis), and 2 preferred local species (Maesopsis eminii and Khaya nyasica) were planted on each site. This paper however focuses on the effect of spacing on the height, dbh, and gld growth of the 4 eucalyptus genotypes viz (2 eucalyptus hybrid clones, 1 eucalyptus local landrace, and 1 pure Eucalyptus grandis). These were planted at 10 different spacings (0.6-, 0.8-, 1.0-, 1.2-, 1.4-, 1.6-, 1.8-, 2.0-, 2.2-, and 2.4-by-1.0 m; these being some of the most common spacings used by farmers) in a Nelder radial experimental design in 4 replications. Measurements of height, dbh, and gld were taken at intervals of 6 months over 3 years. The data was subjected to an analysis of variance to determine if there were statistically significant (p = 0.05) differences in tree growth with spacing levels. The results showed that tree growth was significantly influenced by spacing and genotype with the best spacing being 2.4-by-1.0 m, indicated that the relative growth rates of height dbh, gld, and increased with increasing the distance between trees but decreased with age. After 3 years the best spacing for optimal overall tree growth was 2.4-by-1.0 m and GC10 being the outstanding genotype. Of the 2 sites, trees performed better in Nangili. The results from this study further pinpoint the importance of species-site-matching using improved germplasm and planting trees at the correct spacing for optimal growth.
Institutional Development to Build a Succesfull Local Collective Action in Forest Management from Arau Watershed Unit Nursidah; Bramasto Nugroho; Dudung Darusman; Omo Rusdiana; Yuzirwan Rasyid
Jurnal Manajemen Hutan Tropika Vol. 18 No. 1 (2012)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The study was aimed to build institution model of sustainable forest management, through analysis of action arena, community attributes and forest management rules in Arau Watershed Unit Management Area. To achieve sustainable forest management, recognition and incorporation of local institutions in forest policy formulation is very important because it had great potential for collective action and had characteristics of common pools resources sustainable management needed. To achieve a successful local collective action, the institution must be had: the rules in use suitable with local community norms; the organization has power to give reward and punishment as well as recognized and respected by society; specific management according location; rules of the game was made participatory; there are economic incentives for owners and users; there is an instrument for controlling sustainable use; and conflict resolution through negotiations to reach an concencus agreement. The finding of institutional models analysis show that co-management model between government and local communities, called Nagari Forest Management Model is more suitable, because it gives greater opportunities for indigenous rights recognition to communal forest, until the capacity of villages get better, then the choice of forest management can be shifted into Nagari Community Based Forest Management Model.
Interpretation of Soil Water Content into Dryness Index: Implication for Forest Fire Management Muh Taufik; Budi Indra Setiawan
Jurnal Manajemen Hutan Tropika Vol. 18 No. 1 (2012)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Forest fire research is very important for tropical regions as the current available models on forest fire predictions and control were developed based on studies conducted in dry sub-tropical forest areas. The use of dryness index (DI) based on actual soil water content for assessing fire danger in wetland ecosystem was proposed in this paper. The study site was located in South Sumatera, Indonesia and study was conducted from April 1 st 2009 to March 15 th 2011. Fire danger was categorized into 4 levels; low, medium, dry, and extreme with its margin level was determined based on soil water retention curve analysis. All DI categories occurred in 2009, however only 2 categories (low and medium) were observed in 2010 and 2011. DI reached its maximum intensity in September 2009 with an onset rate of 1.4 per day based on analysis of time intensity curve. Information of onset rate is importance for forest fire management such as for estimating when the extreme category would be reached. Therefore anticipation and prevention efforts might be prepared prior to reaching certain danger level. Information on DI might be useful for water management planning in forest plantation areas as many of them are located in wetland ecosystem.
Precision of Nest Method in Estimating Orangutan Population and Determination of Important Ecological Factors for Management of Conservation Forest Yanto Santosa; Dede Aulia Rahman
Jurnal Manajemen Hutan Tropika Vol. 18 No. 1 (2012)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Orangutan as an umbrella species is closely interlinked with sustainable forest management meaning that the protection of this species has implications on the protection of other species and maintain ecosystem stability. The total natural habitat required to support orangutan’s population could only be determined by the appropriate population size. It is associated with the carrying capacity to accommodate or fulfill the habitat requirements of a wildlife population. Selection and delineation of core and wilderness zones as habitat preference should be based on the results of preference test shown by the spatial distribution of orangutan population. Value of the coefficient of variation (CV) was used to observe the precision of the population estimation and to identify important ecological factors in selection of nesting trees. The study resulted in varied CV spatial values for various habitat types: 22.60%, 11.20%, and 13.30% for heath, lowland dipterocarp, and peat swamp forest, respectively. In the other side, CV temporal values for various habitat types were 5.35%, 22.60%, and 17.60% for heath, lowland dipterocarp, and peat swamp forest, respectively. This indicated that the population density in each type of forest ecosystems had a variation based on location and did not varied according to time of survey. The use of nest survey technique showed good reliable results in estimating orangutan population density. Efforts to improve the precision of estimation can be done by formulating r value as the harmonic average of nest production rates and t as the average of nest decay time per nest category. Selection of habitat preference and nest trees were influenced by food availability thus should form important consideration in conducting nest survey to avoid bias in estimating orangutan populations.

Page 18 of 55 | Total Record : 547

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