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MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management

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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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Transaction Cost of Forest Utilization Licenses: Institutional Issues Hariadi Kartodihardjo; Grahat Nagara; Abdul Wahib Situmorang
Jurnal Manajemen Hutan Tropika Vol. 21 No. 3 (2015)
Publisher : Institut Pertanian Bogor (IPB University)

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Forest resource management has a characteristic of high transaction cost particularly due to lack of valid information and policy process. Such characteristic requires unique institution to ensure an effective policy implementation. This study shows that state has inadequate control over forests and forest governance, extra-legal access, as well as patron-client relationships as the causes of the high transaction costs. Consequently, more and more the natural production forests are degraded and this does not only cause loss of state revenue from natural resources, but also a bankruptcy of corporations which exploit natural production forests. Most of those natural forest assets turned into resources for producing and reproducing a rival institution or extra-legal power, rendering official state institutions incapable of controlling transaction costs. Therefore, changes and improvements of the licensing arrangements need to be supported by the political elites and elite government officials in order to break the historical influence as well as to serve as a new platform for mid-level employees and government officers in implementing the national forest utilization policy.

Phosphate Solubilizing and Antifungal Activity of Root Endophyte Isolated from Shorea leprosula Miq. And Shoreal selanica (DC) Blume Safinah Surya Hakim; Sri Wilarso Budi; Maman Turjaman
Jurnal Manajemen Hutan Tropika Vol. 21 No. 3 (2015)
Publisher : Institut Pertanian Bogor (IPB University)

Fungal endophytes are fungi that lives within plant tissues without causing apparent disease. It is also suggested that these fungi have ability to enhance plant growth and plant resistancy against pest and disease. This research is a preliminary study about root fungal endophytes in dipterocarp since there are lack research concerning about this study focus. We examined root fungal endophyte isolated from seedling of Shorea leprosula and Shorea selanica taken from Dramaga Experimental Forest, Bogor. Furthermore, we also tried to find out the fungal potential ability to solubilize phosphate and suppres fungal pathogen by in vitro assay. Surface sterilization method was used to isolated fungal endophytes from root tissues. Trichoderma spirale, Velsalceae sp., Melanconiela ellisii, Chaetosphaeria callimorpha, and Trichoderma asperellum were isolated during this study. These fungi appear to have specific association between fungal species and host plant, but no evidence of fungal order-level specificiation in S. leprosula and S. selanica. In vitro test also suggested that root fungal endophyte Trichoderma spirale and Melanconiella elisii have potential ability to solubilize inorganic phosphate. In addition, this result also present that root fungal endophyte T. spirale and T. asperellum have the potential to inhibit pathogen fungi Fusarium sp.

Spatial Model of Deforestation in Jambi Province for The Periode 1990–2011 Putu Ananta Wijaya; Muhammad Buce Saleh; Tatang Tiryana
Jurnal Manajemen Hutan Tropika Vol. 21 No. 3 (2015)
Publisher : Institut Pertanian Bogor (IPB University)

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In the last 2 decades, deforestation had been an international issue due to its effect to climate change. This study describes a spatial modelling for predicting deforestation in Jambi Province. The main study objective was to find out the best spatial model for predicting deforestation by considering the spatial contexts. The main data used for the analysis were multitemporal Landsat TM images acquired in 1990, 2000, and 2011, the existing land cover maps published by the Ministry of Forestry, statistical data and ground truth. Prior to any other analyses, all districts within the study area were classified into 2 typologies, i.e., low-rate and high-rate deforestation districs on the basis of social and economic factors by using clustering approaches. The spatial models of deforestation were developed by using least-square methods. The study found that the spatial model of deforestation for low-rate deforestation area is Logit (Deforestation) = -2.7046 – 0.000397*JH90(distance from forest edge) + 0.000002*JJ(distance from road) – 0.000111*JKBN90 (distance from estate crop edge) + 0.000096 *JP90(distance from agricultural crop edge) + 0.044227*PDK90(population density) + 0.148187 *E(elevation) – 0.131178*S(slope); while for the high-speed deforestation area is Logit (Deforestation) = 9.1727 – 0.000788*JH90(distance from forest edge) – 0.000065 *JJ(distance from road) – 0.000091*JKBN90(distance from estate crop edge) + 0.000005 *JP90(distance from agricultural crop edge) – 0.070372*PDK90(population density) + 11.268539*E(elevation) – 1.495198*S(slope). The low-rate and high-rate deforestation models had relatively good ROC (Relative Operating Characteristics) values of 91.32% and 99.08%, respectively. The study concludes that the deforestation rate was significantly affected by accessibility (distance from forest edge, distance from estate crop edge, edge from agricultural land), biophysical condition (elevation and slope) as well as population density.

Institutional Sustainability Barriers of Community Conservation Agreement as a Collaboration Management in Lore Lindu National Park Sudirman Daeng Massiri; Bramasto Nugroho; Hariadi Kartodihardjo; Rinekso Soekmadi
Jurnal Manajemen Hutan Tropika Vol. 21 No. 3 (2015)
Publisher : Institut Pertanian Bogor (IPB University)

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The main problem of forest institutional arrangement is the issue of institutional sustainability in achieving sustainable forest ecosystem. This study aimed to explain the barriers of institutional sustainability Community Conservation Agreement (CCA) designed in Lore Lindu National Park (LLNP), in Indonesia, as a collaborative management of national parks. This study is of descriptive which used qualitative approach, i.e. asking open-ended questions, reviewing documentation and analyzing textual of community conservation agreements. We found that the institutional sustainability barriers of CCA were the local decisions on collective-choice level and that the rules at operational level arranged in CCA were not in line with formal rules of national park management at the constitutional level. Furthermore, the low capacity of local institutions in heterogeneous villages with many migrants in controlling and regulating the forest use, especially in rehabilitation zone areas, also became a barrier to institutional sustainability of CCA. Therefore, institutional sustainability of CCA requires support of national park management policy that accommodates the sustainability of livelihoods of local communities in national parks, strengthening local institution's capacity, and ultimately integrating institution of CCA as part of LLNP management.

Soil Properties and the Abundace of Ironwood (Eusideroxylon zwageri Teijsm.& Binn.) Varieties in Jambi, Indonesia Bambang Irawan
Jurnal Manajemen Hutan Tropika Vol. 21 No. 3 (2015)
Publisher : Institut Pertanian Bogor (IPB University)

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Two series of a study on the correlation between soil properties and distribution of ironwood (Eusideroxylon zwageri Teijsm.& Binn.) varieties had been conducted in Senami, a natural forest stand, Jambi, Indonesia. The first was using purposive random sampling. The samples were taken from the locations where the E. zwageri varieties naturally grow in the depth of 0–30 cm and 30–60 cm. The number of composite samples was 18 which were analyzed for chemical soil properties. The second study was conducted using systematic sampling where 64 soil cores were collected from 3 different soil depths namely 0–20 cm, 20–40 cm, and 40–60 cm. The physical soil properties were analyzed from the 64 soil samples. The research results revealed that the drainage among E. zwageri varieties varied from poor conditions to moderate, while the bulk density was slightly different, from very low to low. The results also show that E. zwageri varieties are able to grow in almost any soil textures. There is no specific correlation between chemical soil properties and distribution of E. zwageri varieties. All varieties grow at almost the same condition of chemical soil properties except var. grandis.

Towards State Hegemony Over Agricultural Certification: From Voluntary Private to Mandatory State Regimes on Palm Oil in Indonesia Muhammad Alif Kaimuddin Sahide; Sarah Burns; Agung Wibowo; Dodik Ridho Nurrochmat; Lukas Giessen
Jurnal Manajemen Hutan Tropika Vol. 21 No. 3 (2015)
Publisher : Institut Pertanian Bogor (IPB University)

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Previous work on certification of palm oil has reported on a trend toward a change, from failed state regulation to voluntary, private governance. However, recent observations suggest a trend, moving from voluntary, private governance to mandatory state governance in palm oil certification in Indonesia, a move in which the state is reclaiming authority. In this light, the aims of our research are (1) to identify the main actors involved in certification politics, (2) to explain this trend in terms of the actors' interests and whatever benefits may result for them. We developed our research questions based on bureaucratic politics and power theory. A mix of document analysis, interviews, and observations are applied for addressing the questions. The results answer our research questions, i.e., that (1) the state claims back its authority over certification from private actors and contributed to the complex meta governance of palm oil certification, the state mandatory scheme that is supported by states' bureaucracies in charge reduces the influence of non-government or private actors. (2) This trend is due to a coalition of specific state bureaucracies and big industry interests, which grant privileges to industry that are denied to small producers. Unexpectedly, all Indonesian bureaucracies associated with this trend support mandatory state certification, which indicates that palm oil has been elevated in importance to become a matter of national, rather than mere bureaucratic interest. Making certification mandatory through coercive regulatory power is the main tool with which state power can challenge voluntary implementation and reclaim authority. Furthermore, the state needs the voluntary system to exist as well in order to strengthen its position. Therefore, the voluntary and the compulsory systems collaborate to attract global initiatives, which is contributing to the high complex of meta governance.

Tropical Peat Swamp Management Options: A Case Study Using System Dynamic in Southern Aceh Aswandi Aswandi; Ronggo Sadono; Haryono Supriyo; Hartono Hartono
Jurnal Manajemen Hutan Tropika Vol. 21 No. 3 (2015)
Publisher : Institut Pertanian Bogor (IPB University)

Tropical peat forest ecosystems have multiple benefits as regulating hydrological system, carbon storage, timber and non-timber products, and protecting the biodiversity. Lack of understanding of these functions, short-term economic benefits is more preferable despite reducing its ecological benefits. This study proposed a system dynamics model of tropical peat forest ecosystem in determining its optimum management for extractive utilizations (timber and non-timber forest products), environmental services, and biodiversity. A dynamics model was used to describe changes in peatland and forest cover, biomass accumulation and carbon storage, and total economic value of tropical peat forest ecosystem in Trumon and Singkil, Southern Aceh. The projection showed that peat forest ecosystem benefits would decline in the long term if degradations continue at the same rate over last decade. Efforts to change the primary peat forest to plantation would reduce the total economic value of ecosystem and biodiversity values at level -19.63% and -26.28% from current conditions. Carbon emissions were increased at 117.32 tons CO2 eq ha-1 year-1, higher than average of carbon losses from peatland oxidation. Preserving 50% of forest vegetation on moderate depth and protection very deep peatlands would reduce emission -6.96% to -35.06% and increase forest carbon storage at significant rate +15.06% to +63.32%, respectively. These mitigation schemes would improve the biodiversity and hydrological function. Forest rehabilitation with agroforestry practices will enhance carbon uptake, especially on degraded lands.

Index of Cultural Significance as a Potential Tool for Conservation of Plants Diversity by Communities in The Kerinci Seblat National Park Asvic Helida; Ervizal Amir Muhammad Zuhud; Hardjanto Hardjanto; Yohanes Purwanto; Agus Hikmat
Jurnal Manajemen Hutan Tropika Vol. 21 No. 3 (2015)
Publisher : Institut Pertanian Bogor (IPB University)

Kerinci community is one of the Indonesian indigenous people who live in Kerinci regency, Jambi Province. They have the local knowledge of the surrounding vegetation that has become a cultural unity with community. This study were aimed at analyzed the significance of culture plants and reviewing efforts to conserve plants based on cultural values in relation to Kerinci cultural. The study was conducted at three locations purposively, they are Lempur Baru Village, Lama Tamiai Village and Ulu Jernih Village for eight months from October 2013 to May 2014. Data was obtained by participatory observation approach, depth interview while the assessment of plant deployment society approach by point of view. The research data consist of data botany, plant utilization and assessment plant deployment while data analysis using the formula Index of Cultural Significance (ICS) adopted from Turner. The study shows that the rice (Oryza sativa L) and cinnamon (Cinnamomun burmanii Ness Ex.BI)) is a plant species that have important cultural value of 59 and 57 while inggu species (Ruta angustifolia (L). Pers) and onion timber (Allium fistudosum Linn) has the lowest ICS, respectively 3. The Stimulus Tri Amar-Conservation analysis result that index of cultural significance (ICS) and kind of conservation by community has a range relationship.

Simulating Harvest Schedule for Timber Management and Multipurpose Management in Teak Plantations Tatang Tiryana
Jurnal Manajemen Hutan Tropika Vol. 22 No. 1 (2016)
Publisher : Institut Pertanian Bogor (IPB University)

Sustainable management of teak plantations in Java requires an improvement of the existing yield regulation method to optimize multiple benefits of the plantations at risk of stand destruction. This study was therefore aimed to formulate an alternative harvest scheduling model that integrates risk of stand destruction for supporting multipurpose management of teak plantations. The proposed model used a state-space planning model to simulate the dynamic of plantations due to timber harvesting and stand destruction, and then sought optimal solutions for two management scenarios, i.e. timber management that optimized total harvest volume and multipurpose management that optimized net present value (NPV) while increasing carbon stocks. Using a case study on a typical teak plantation, this study confirmed that increasing destruction rates reduced harvest volumes, NPV, carbon stocks, and resulted in imbalanced ending age-class structures. Reducing cutting-age limit increased harvest volumes and NPV, but it also reduced carbon stocks of the plantations. Although the multipurpose management generated lower financial benefit, it maintained carbon stocks and produced better ending age-class structures compared to timber management. The proposed harvest scheduling model provides a useful planning tool for managing teak plantations.

Economic Valuation As a Basis for Sustainable Mangrove Resource Management: A Case in East Sinjai, South Sulawesi Sri Suharti; Dudung Darusman; Bramasto Nugroho; Leti Sundawati
Jurnal Manajemen Hutan Tropika Vol. 22 No. 1 (2016)
Publisher : Institut Pertanian Bogor (IPB University)

Diversity of mangrove function generates both tangible and intangible benefits and services causing its overall value is not easily recognized hence often overlooked in coastal areas development. The study used the total economic value as a framework for estimating the values of the different uses of mangroves in East Sinjai Sub District, South Sulawesi. Survey method was carried out from September 2014-February 2015. The results showed that total value of mangrove ecosystems in East Sinjai with total area of 758 ha is IDR37,535,809,496year-1. Those values were derived from direct benefits (polyculture fish pond, catching aquatic biota such as fish, shrimp, crab and milkfish, collecting fuelwood and bats catching) and from indirect benefits i.e. its function to evade abrasion and sea water intrusion, its function as carbon sink and sequestration, its biodiversity values and its existence benefits. The problem that should be anticipated is potential expansion of polyculture fishpond which drives clearing intact mangrove forests as it contributes quick and direct income to local people. The research results are expected could be used as a consideration for local government in formulating recommendations for sustainable mangrove management in East Sinjai.

Page 29 of 55 | Total Record : 547

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