Jurnal Manajemen Hutan Tropika
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Exploring Terrain Indices and Slope Morphometry for Trail and Campsite Planning on Mount Irau, Malaysia
Full text linkTerrain analysis and elevation profiling are widely utilized in geographical studies where spatial information system is one of the foremost tools in assessing characteristic patterns of hiking trails and plain areas suitable for a campsite. The main objective of this study is to classify the landforms of Batu Gangan Forest Reserve by conducting a morphometric analysis of the Digital Elevation Model (DEM) with 10m resolution. The classification process is based on calculating the Topographic Position Index (TPI). Using TPI, the landscape was classified into slope position and landform categories. The delivered TPI landform classes are spatially correlated with the elevation, slope, LS factor, and topographic wetness of the mountain. Site observation was carried out to identify water sources, viewpoints, and their significance as suitable campsites and potential trail. An alternative trail was proposed to reduce the visitor impacts towards the main trails. The result suggested that the plains landform only covered 3.26% or 2.03km2 of the study area, where two potential campsites were identified. The method presented and research findings derived from the study are beneficial to support sustainable recreation resource planning, especially in a complex mountainous area. The study\u27s findings and data will lead to proper forest use for recreational reasons consistent with conservation efforts
The Role of Stakeholders in the Management of Jurang Jero Nature Tourism Object in Mount Merapi National Park, Central Java, Indonesia
Full text linkNational parks, as an ecosystem protection function, are also encouraged to support local economic development. Meanwhile, community-based tourism (CBT) in the utilization zone is identified as a viable strategy to improve livelihoods for local communities and support the conservation of the national park. This research aimed to identify stakeholders and their roles in the management of the Jurang Jero Nature Tourism Object (JJNTO) in Mount Merapi National Park (MMNP). There were 16 existing stakeholders, including government officials, community members, and the private sector, from the two villages adjacent to JJNTO, who were interviewed using an open-ended interview guide. The data were analyzed using social network analysis (SNA) with the software NodeXL Basic, followed by network visualization with Kumu.io software. The results showed that the strength and closeness of the relationship among all stakeholders were at a moderate level, approaching 57% of network density. Centrality analyses identified the Head of Jurang Jero Tourism Group, the Head of Randu Ijo Forest Farmer Group, and the Head of Srumbung Resort as the three most important stakeholders. Therefore, the role of all stakeholders still needs to be improved to support the management of CBT and MMNP conservation efforts, specifically from the private sector, the environment, and tourism agencies, by improving communication and joint commitments to create cooperation and partnerships
Application of Conventional and Improved Techniques in Felling and Skidding to Residual Stand Damages
Full text linkFelling and skidding are essential in the timber extraction process. But on the other hand, residual stand damage can’t be avoided. This study aimed to analyze the impact of conventional and improved felling and skidding techniques on residual stands in natural forests. Three observation plots were developed to identify the types, numbers, and criteria of residual stand damage due to both techniques. The criteria were categorized as a) minor damage (<25%), b) moderate damage (25–50%), and c) major damage (>50%). It showed that the conventional felling and skidding technique caused damages of 14.92% dominated by tree crown damage and 16.70% dominated by stem wounds, respectively. The residual stand damage due to conventional felling and skidding technique was 31.62% categorized as medium damage. Meanwhile, improved felling and skidding techniques caused damage of 9.89% dominated by broken trees, and 10.27% dominated by stem wounds, respectively. The residual stand damage due to improved felling and skidding technique was 20.16% categorized as minor damage. The improvement techniques can minimize residual stand damage by 36.24%. Therefore, a good understanding of forest concessionaires regarding RIL principles is necessary for achieving sustainable timber harvestin
Habitat Suitability Modeling of Javan Slow Loris (Nycticebus javanicus) in the Forest Cluster of Gunung Halimun Salak
Full text linkJavan slow loris (Nycticebus javanicus) is one of the endemic wildlife on Java Island. This species owns particular characteristics, including arboreal, solitary, and nocturnal natures. The species is threatened due to habitat loss and illegal trafficking. Nevertheless, their current geographic distribution remains unclear and environmental factors impact on these species is mostly unknown. This study aims to predict the habitat suitability of javan slow loris in the Conservation Management Forest Unit area of Mount Halimun Salak Forest Group. The study employs a species distribution modeling approach using Maximum Entropy. The presence data of javan slow loris was collected from the radio-telemetry devices used in post-release monitoring. The modeling utilizes elevations, distance from the settlements, slopes, and land covered as its environment variables. The result shows that 52% of the study areas, or 54,669 ha are suitable as the habitat of N. javanicus. Since as the largest protected area on Java Island, Gunung Halimun Salak National Park is one of the natural habitats that are pivotal for this species. This study provides essential documentation for developing management strategies within protected areas. Hence, the result of the study could serve as one of the factors in the determination of animal release location in the future.
 
Study on the Phenology of Three Fruit Trees Species in Purwodadi Botanical Gardens, East Java, and Its Relationship with Mesoclimates
Full text linkNowadays the study of phenology has taken an important contribution to climate change research. Therefore this study observed local fruit trees species collected in the Purwodadi Botanical Gardens (PBG); they were Flacourtia rukam (Zoll & Moritzi), Limonia acidissima L., and Manilkara kauki (L) Dubard. We used fruit phenology data from 2014 to 2018 as secondary data to describe the changes. We also observed the weekly phenology of flowering and fruiting for three years from 2019 to 2022. At the same time, mesoclimates components included precipitation, maximum and minimum temperature were daily recorded by the PBG weather station measurement. Data pairs were then analyzed by using a structural modeling of WarpPLS to determine the relationship among mesoclimates and phenology variables. Research showed that phenology of flowering and fruiting of F. rukam, L. acidisissima, and M. kauki was significantly shifted from 2014 to 2022, along with changes in rainfall patterns, maximum and minimum temperatures in the PBG. Based on the Friedman test, it was shown that the maximum and minimum temperatures significantly changed (p<0.05). Five months of mesoclimates were significant predictors and affected before the measurement of phenological flowering and fruiting of three species. High precipitation significantly reduced maximum temperature, and increased minimum temperature. The high precipitation reduced the probability of flowering and fruiting initiation, except for those of L. acidissima. Increasing maximum temperature reduced flower and fruit set of F. rukam and L. acidisissima, while it reduced flowering of L. acidissima. Furthermore, minimum temperature induced flowering, except in L. acidissima.
 
Non-Timber Forest Products in Cat Tien: Local Use and Sustainable Management
Full text linkRural ethnic minority groups in Cat Tien National Park (CTNP) have relied heavily on non-timber forest products (NTFPs) and threatened its natural forest environment. Still, the real context of the NTFP consumption between indigenous peoples (IPs) and migrant ethnic minority group (MEs) has been poorly comprehended. Also, the participatory rural appraisal (PRA) and the “walk-in-the-wood” method were applied to analyse the NTFP consumption between these IPs and these MEs. The study results indicated that the two local groups had a high or a relatively high dependence on the NTFPs and there was a shifting trend from subsistence to cash income (p-value = 0.000 < 0.05). Also, these IPs had a better knowledge about edible forest plants than these MEs, whilst various more MEs consumed forest fauna for medicinal demand. These MEs harvested and consumed those NTFPs more intensively, but these IPs did the resources for more self-consumption related to the indigenous traditions. Based on the local context, NTFP use patterns, cultural dissimilarity, and local capacity empowerment remain needed in park administration strategies. Similarly, culture-based arrangements would contribute to positive outcomes and sustainable management of the park.
 
The Javan Gibbon (Hylobates moloch) Habitat Changes and Fragmentation in the Dieng Mountains, Indonesia
Full text linkThe endangered javan gibbon (Hylobates moloch) has been threaten by massive habitat loss and fragmentation in Java. The survival of the second largest population which inhabited unprotected Dieng mountains faced greater risk to habitat conversion and fragmentation. The landscape-level habitat monitoring using spatiotemporal quantification is crucial as a baseline data for javan gibbon conservation. Here, the land-use and land-cover (LULC) change of the Javan gibbon habitat during 1994–2009–2021 and its fragmentation in the Dieng mountains were quantified. This study revealed there were no significant decline in the total of forest. However, its quality was degraded in the interior of forest block. The forest has more fragmented from large patches into smaller patches and increased forest edge. The higher fragmentation happened in the areas that traversed by road. Six suitable forest blocks were identified with varying level of connectivity. Protection and restoration both in the forest and in the interior forest is immediate need, especially in the main forest block. The extra effort is also crucial in the connected forest but traversed by road. The blocks which closely isolated by road could be potentially reconnected by artificial canopy bridge, while the other distantly isolated block might need habitat restoration for corridor.
 
Stakeholder Salience in a Multistakeholder Initiative of the National Forestry Council of Indonesia
Full text linkThis study analyzes the roles and positions of stakeholders in decision-making processes within the National Forestry Council (Dewan Kehutanan Nasional, DKN), a forest-related multistakeholder platform in Indonesia. It considers stakeholders’ power, legitimacy, and urgency. The research employed a qualitative case study, centered around in-depth interviews with 27 key informants with diverse backgrounds involved in the DKN. The study found that despite being designed to facilitate democratic and inclusive decision-making, the engagement of stakeholders in the DKN is heavily dominated by powerful government actors. Several stakeholder groups, such as NGOs and academics, may actively participate in decision-making processes, but they do not meaningfully influence and capacity to determine the organizational policy directions. This is related to an imbalance in the distribution of power among stakeholders in DKN. Even though this organization promotes the principle of inclusivity, the reality is that the presence and influence of the government are still the dominant factors in determining policy directions. This study confirms the importance of the stakeholder salience analysis approach in the context of multistakeholder initiative organizations such as the DKN, which allows recognition of power dynamics and domination among stakeholders within the DKN so that decisions made truly reflect the common interests of all parties involved
The Influence of Land Management on Soil Mite (Acari: Oribatida, Prostigmata, and Mesostigmata) Communities as Bioindicators for Environmental Conditions
Full text linkAs a soil-living organism, soil mite presence is important for ensuring the sustainable land. Intensive management practices in forest land drive a change in its community structure. A field study was conducted in Wanagama Education and Research Forest I, Gunungkidul District, Yogyakarta Special Region Province, Indonesia, to assess the role and impact of the different forest management practices on the soil mite community. Soil samples from 15 representative soil sites were taken from the agroforestry, mixed-forest, and pioneer community forest. Collected individuals from August to October 2021 were taken by Berlese-Tullgenn Funnel and identified to morphospecies level. A total of 758 individuals of soil mites were recorded during the study period. Out of these, 21 individuals from agroforestry, 288 individuals from mixed-forest, and 449 individuals from pioneer community forest. Results of the study revealed the occurrence of 3 taxa from 36 morphospecies of oribatid mites occurred in the areas. The Shannon diversity indices of oribatid mites were 1.831, 1.424, and 0.867 in mixed-forest, agroforestry, and pioneer community, respectively. The similarity indices showed there was a similar diversity in agroforestry and mixed-forest, either in pioneer community. Through one-way ANOVA analysis, we stated that differences between of three management practices significantly affected soil mites, especially oribatida rather than prostigmata and mesostigmata