Jurnal Ilmu Kehutanan

Reinventing Forestry Education to Support Net Zero Emissions 2060 and Indonesia Emas 2045: Integrating Climate Mitigation, Bioenergy, and Human Resource Transformation

Sigit Sunarta — 2026-04-13

Previous research had shown that climate change often posed a critical challenge to humans, both currently and in the future. This had led to the implementation of targets by countries around the globe for the transition to net-zeroemissions. Indonesia, in particular, had atargetof achieving netzero by 2060, aswell asa national vision of 'Golden Indonesia 2045'. Therefore, this research aimed to discuss the strategic role of the forestry sector in climate mitigation through forest and land management, emissions-reduction actions, carbon-sequestration enhancement, and forest-based renewable energy development. The results emphasized the importance of reinventing forestry education to support the transition. Curriculum transformation toward interdisciplinary, integrative, and collaborative approaches was required to develop adaptive graduate capacities to achieve the targets.

Plant Species for Enhancing Ecosystem Functions of the Reclamation Program on Ex-Mining Areas in South Kalimantan

Guritno Soeleman — 2026-02-02

Mined reclamation failure could lead to land degradation, ecosystem instability, community poverty, and loss of environmental services. Previous research linked reclamation success to the selection of suitable plants. This study aimed to identify the best species for reclamation and ecosystem services, measured by ecosystem conditions, plant growth, and soil fertility. Angsana (Pterocarpus indicus Willd.), waru (Hibiscus tiliaceus L.), cashew (Anacardium occidentale L.), sengon (Paraserianthes falcataria (L.) Nielsen), and mahogany (Swietenia mahagoni (L.) Jacq.) were selected as the highest number of species planted in PT Kalimantan Energi Lestari (KEL) reclamation area. Mean annual increment (MAI) was measured using a 10% sampling intensity for all plant stages. Soil quality (C-organic, N, C/N, P, K) was sampled at 5% around the tree root zone using a purposive sampling method. The five species showed positive impacts on soil nutrients, increasing by 14.6% in five-year-old plants, except for K-exchange, which decreased by 3.4% to 71.4%. In addition, P. falcataria improved significantly in three macro parameters, namely C-organic 121.2%, N-total 100%, and P-avail 156%, and had the highest MAI for total height of 252.5 cm/year. This research concluded that P. falcataria was the most appropriate revegetation plant species for the reclamation program in coal-mined areas

Determining Crown Mass Density of Decurrent Trees Based on Physical Characteristics Analysis

Siti Churotul Aini — 2026-03-26

Self-weight calculation was identified as an essential step in tree structural analysis. In practice, this calculation included estimating stem weight based on wood density, while crown density was expressed as a percentage of crown area. However, previous research had not provided explicit methodologies for determining crown density as a function of crown mass and volume. Therefore, this research aimed to establish a proper method and corresponding conversion factors for translating area-based crown density estimates to those derived from crown weight and volume. A total of 15 healthy decurrent trees were selected to assess crown volume and density through physical attribute analysis. The new crown area density was calculated after pruning, where all pruned crown biomass was collected and weighed to determine crown mass. Mathematical analyses were developed to convert crown density values. The results showed that decurrent trees had a mean crown density of approximately 2.95 kg/m³, exceeding the value reported in reference research for excurrent trees (1.9 kg/m³). Since this research focused on tropical tree species, the results could serve as a reference for subsequent research on tropical tree structural characteristics.

Community Perceptions of Forest-Based Ecosystem Services in Protected Forests under the Social Forestry Program in Kulon Progo

Prasetyo Nugroho — 2026-04-03

Social forestry programs offered a substantial opportunity to enhance local livelihoods and foster sustainable forest governance. However, empirical insights into the specific forest-based ecosystem services (FbES) most valued by adjacent communities remained limited. Therefore, this research aimed to investigate community perceptions of FbES across three social forestry groups located within protected areas in Kulon Progo, Indonesia. Based on 306 completed survey responses, perceptions across three FbES categories, including provisioning, regulating, supporting, and cultural services, were assessed. The results showed distinct patterns in service valuation, with provisioning services consistently rated as the lowest. This outcome might have reflected the restrictive regulatory environment in protected forests, which limited extractive use and shaped community interactions with forest resources. In contrast, regulating, supporting, and cultural services were consistently perceived as more valuable, suggesting an appreciation for the ecological stability and cultural identity forests provide. Variation among groups also pointed to the influence of local customs and differential access to forest benefits. These results outlined the inherent trade-offs between conservation imperatives and livelihood needs, and the importance of adaptive, locally responsive forest management. The present research advanced current understanding of socio-ecological dynamics in social forestry and strategies to strengthen community participation and equitable benefit-sharing frameworks.

Spatial Dynamics and Ecological Health of Lantebung Mangrove Ecosystem, in Bira Village, Makassar, Indonesia

Adrayanti Sabar — 2026-04-13

The mangrove ecosystem is crucial for coastal protection, carbon sequestration, and biodiversity conservation. Therefore, this research aimed to investigate the spatial dynamics and health of the Lantebung Mangrove Ecosystem in Bira Village, Makassar from 2017 to 2023, using the Mangrove Health Index (MHI) derived from satellite imagery to assess changes in mangrove area, evaluate health using Normalized Burn Ratio (NBR), Green Chlorophyll Index (GCI), Structure Insensitive Pigment Index (SIPI), and Atmospherically Resistant Vegetation Index (ARVI) indices, and identify influencing factors, including urbanization, pollution, and conservation efforts. The analysis used Landsat 8 imagery to calculate MHI values and classify health levels. The results showed an increase in mangrove area from 14.45 ha in 2017 to 18.19 ha in 2023, attributed to effective conservation programs. However, MHI values fluctuated, peaking at 370.32 in 2020 and declining to 148.60 in 2023, indicating persistent environmental pressures. This research underscored the need for integrated management practices to enhance mangrove health and resilience against urbanization, pollution, and climate change. The results underscored the importance of remote sensing for monitoring and guiding conservation strategies in the mangrove ecosystem.

Environmental Carrying Capacity of Tourist Attractions in Mangunan Forest Resort, Bantul Regency

Maria Imaculata Rahmawathy Idan Kewuren — 2026-04-24

The growth of nature tourism at Mangunan Forest Resort in Bantul Regency has created challenges in balancing environmental sustainability with tourism activities. This study assessed tourism carrying capacity at three main destinations — Puncak Becici, Hutan Pinus Sari, and Seribu Batu Songgo Langit — using Physical Carrying Capacity (PCC), Real Carrying Capacity (RCC), and Effective Carrying Capacity (ECC). Ecological correction factors included herpetofauna diversity, slope, and soil erodibility, while tourist satisfaction was measured via Customer Satisfaction Index (CSI) from 100 respondents per site. All three attractions operated below their ECC limits, indicating sustainable current visitation. Hutan Pinus Sari had the highest ECC at 1,478 people/day (CSI 77.85%) due to a larger area, shorter stays, and higher herpetofauna diversity. Puncak Becici followed with 1,150 people/day (CSI 76.32%), supported by high turnover. Seribu Batu Songgo Langit had the lowest ECC at 597 people/day despite the highest CSI (80.52%), reflecting spatial and ecological constraints. The results highlighted a strong link between carrying capacity and tourist satisfaction. Integrating ecological parameters with CSI yields a more comprehensive assessment for sustainable, conservation-based tourism management in Mangunan Forest Resort.

A Community-based Management Strategy for High Conservation Value Areas in the Kelabba Madja Tourism Site

Ferdinand Makonda — 2026-05-08

The determination of Kelabba Madja as the target for the development of the East Nusa Tenggara Province Tourism Estate in 2022 is a potential source of increased pressure on regional sustainability. Comprehensive research identifying High Conservation Value Areas (HCVAs) and formulating community-based management strategies in non-forest tourism areas was limited. Therefore, this research aimed to formulate a community-based management strategy for HCVAs. A mixed-methods design was adopted, incorporating descriptive analysis, HCVA assessment, behavioral analysis, strengths, weaknesses, opportunities, and threats (SWOT) analysis, and the analytical hierarchy process. The results showed that Kelabba Madja contained HCVA 3 (44.7 ha), 5 (332 ha), and 6, which intersected with 3. Community activities of grazing and the accumulation of tourist waste in HCV areas 3 and 6 had the potential to become serious threats. The priority strategies included sustainable environmental management, stakeholder coordination, strong cooperation with various parties, including the government, the community, and the private sector, improving community welfare and education, and strengthening regional protection regulations. This research contributed to the body of knowledge by integrating HCVAs mapping, behavioral analysis of the local community and tourists, and a multicriteria decision-making method as the basis for evidence-based HCVAs management.

Allometric Models to Predict Total Height and Diameter at Breast Height (DBH) for the Flooded Forest Ecosystems in Cambodia

Horn Sarun — 2026-05-19

Reliable allometric equations are essential for estimating forest structure, biomass, and carbon stocks, which are still scarce in Cambodia's flooded forests. Therefore, this study aimed to develop predictive models fortwo key allometric relationships: (1) total tree height as a function of diameter at breast height (DBH) and (2) estimation of DBH from stump diameter when DBH measurements were unavailable. The analysis compared their performance using the coefficient of determination (R²), Root Mean Square Error (RMSE), and Akaike Information Criterion (AIC). The results showed that the logarithmic model performed optimally for Height–DBH relationship (R² = 0.494; RMSE = 2.59 m; AIC = 1738.9). The selected equation, H = −1.7261 + 4.1124 × ln (DBH). DBH correlated strongly with stump diameter (r = 0.98, p < 0.001), with the power equationDBH = 0.969 × Stump Diameter^0.983 as the best predictor. These stumpbased relationships served as important tools in estimating biomass and carbon stocks in disturbed or logged forests where DBH could not be measured directly. Furthermore, the results showed the structural variability of Cambodia's flooded forests and provided practical allometric tools for forest inventory, biomass estimation, and carbon accounting underREDD+ initiatives.

Ethnobotany of Edible Wild Plants in Serundung Permai I Hamlet, Melawi District

Hanifa Hanifa — 2026-06-03

Ethnobotany examines the relationships between local ethnic communities and the environment, including the use of plants to meet daily needs. Therefore, this research aimed to identify the species of wild plants used as food sources by the community in Serundung Permai I Hamlet, Melawi Regency, West Kalimantan Province. Data collection techniques used data triangulation, namely interviews, observation, and documentation, while snowball sampling determined the number of informants to be 20. The results showed that the community of Serundung Permai I Hamlet used 32 wild plant species as food sources, including vegetables (23 species), spices (5 species), and fruits (4 species). This indicates that many wild plants still have the potential to be used as food sources or alternatives. However, knowledge about the availability and use of wild plants as food sources has gradually declined, which may threaten continued use and conservation. The documented wild plants used by the community of Serundung Permai I Hamlet became part of a conservation effort of useful wild plant species.