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INDONESIA
Jurnal Sylva Lestari
Published by Universitas Lampung
ISSN : 23390913     EISSN : 25495747     DOI : https://doi.org/10.23960
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology
Jurnal Sylva Lestari (JSL) [P-ISSN 2339-0913 | E-ISSN 2549-5747] publishes original research articles related to all aspects of forestry and environmental sciences which includes, but not limited to the following topics: forest and natural resources management, biodiversity conservation and management, wood science and timber technology, agroforestry and social forestry, forest products and services, and socio-economics of natural resources. It is primarily a medium for disseminating original theoretical and experimental researches, as well as technical reviews. This journal issues one volume annually consist of three issues that delivered every January, May, and September.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Kehutanan
Articles 318 Documents
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Jurang Jero Nature Tourism Object in Indonesia: Is it Sustainably Managed? Sutata, Daris Fahmaa; Sadono, Ronggo; Madjid, Muhammad Iqbal Nur
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1251

Abstract

Community-based tourism has become an alternative sustainable development strategy that enhances local livelihoods while promoting forest conservation, especially in areas where resource use is limited. This study used a five-dimensional framework, including ecological, economic, social, nature tourism services, and institutional dimensions, to assess the sustainability status of the Jurang Jero Nature Tourism Object’s management. Field observations and respondent interviews were used to gather primary data, which was then analyzed using a rapid appraisal technique for fisheries (Rapfish) modified for Rap-tourism. The results show that management of the Jurang Jero Nature Tourism Object is moderately sustainable, reflecting balanced performance across ecological, economic, social, institutional, and nature tourism service dimensions. Even though the ecological and social dimensions are comparatively strong, more advancements in nature tourism and economic dimensions are required. Improving sustainability and promoting advancement require increased cooperation between stakeholders. Recommended strategies include strengthening human resource capacity through targeted training, developing environmentally sustainable tourism infrastructure, and improving the quality of tourism services and attractions through corporate social responsibility initiatives. Keywords: community-based tourism, leverage analysis, Monte Carlo, National Park, Rapfish
Estimation of Biomass and Carbon Stocks in Mangrove Forests Dominated by Nypa fruticans Wurmb in the Nagari Mandeh Area, West Sumatra, Indonesia Fikri, Nur Aisyah; Solfiyeni; Maideliza, Tesri; Ritonga, Muhammad Azli
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1260

Abstract

Ecosystem condition, biomass, and carbon storage in mangrove forests are highly dependent on the presence of mangrove species in coastal ecosystems. Conversely, the presence of a dominant species alters ecosystem mechanisms; for example, Nypa fruticans Wurmb. Biomass, carbon storage, and potential carbon sequestration were estimated in a coastal area dominated by N. fruticans. Sampling was conducted by laying out multi-level plots along transect lines representing different vegetation types. Biomass on the ground surface was calculated by applying species-specific allometric equations to convert biomass to carbon and CO2 equivalents, and then computing the total carbon stocks. Biomass was calculated at 140.21 tons/ha, with a carbon stock of 66.11 tons/ha, yielding a carbon sequestration potential of 241.82 tons/ha. It is obvious that N. fruticans, the dominant species as the biggest carbon store, is accompanied by low diversity of native mangrove species. Ecological imbalance between N. fruticans and other species persists despite increased total carbon storage. Management efforts must be implemented to support biodiversity and carbon sequestration in coastal mangrove forests. Keywords: biomass, carbon stock, mangrove, Nypa fruticans, carbon sequestration
Resistance to Termites and Colour Change in Gombong Bamboo (Gigantochloa pseudoarundinacea) Modified with Boron Compounds, Vegetable Oil, and Heating Pangestu, Lilih Cipta; Priadi, Trisna; Prayogo, Yanico Hadi
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1270

Abstract

Bamboo is a potential material in the furniture, construction, and craft industries due to its rapid growth and good physical and mechanical properties. However, its vulnerability to attacks by wood–destroying organisms, particularly termites, necessitates preservation to extend its service life. This study evaluated the resistance of gombong bamboo to subterranean and drywood termites, as well as its color changes. The modification treatments involve boric acid equivalent (BAE) impregnation, heat treatment (60 °C, 150 °C, and 180 °C), and vegetable oils (linseed and neem oil). Statistical analysis using one-way ANOVA was performed to determine the significance of each treatment factor on weight loss and colour parameters, followed by Duncan’s Multiple Range Test for mean comparison. In addition, color change and the chemical composition of the most effective oil treatment in terms of termite resistance were analysed using Gas Chromatography-Mass Spectrometry (GC-MS). The results showed that BAE, neem oil, and the combined treatments (BAE-vegetable oils) effectively improved bamboo resistance to both termite tests. The synergy between BAE impregnation, heat treatment (180 °C), and neem oil produced the highest level of termite resistance. Heat treatment at elevated temperatures also caused significant colour changes, particularly a reduction in brightness (L*) and an increase in dark brown tones attributed to thermal degradation of hemicellulose and extractives. GC-MS analysis revealed that neem oil was dominated by fatty acids and other compounds known for their antimicrobial, antifeedant, and termite-repellent activities, which likely contributed to the enhanced biological performance of the treated bamboo. Keywords: bamboo modification, bio-based treatment, impregnation, sustainable bamboo utilization
Evaluating Ecosystem Carbon Pools in Coffee-Based Agroforestry under the Framework of the King’s Philosophy for Landscape Restoration Podong, Chattanong; Khamfong, Krissana; Noinumsai, Supawadee; Mhon-ing, Sukanya
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1285

Abstract

Agroforestry systems are increasingly recognized as multifunctional land-use strategies that contribute to climate change mitigation, ecosystem restoration, and rural livelihoods. This study evaluated ecosystem carbon stocks across three land-use systems at the Phu Phayak Highland Agricultural Development Station, northern Thailand, under the framework of the King’s Philosophy for landscape restoration. The systems comprised: (i) coffee intercropped with Pinus kesiya, (ii) coffee intercropped with Morus alba and associated species, and (iii) monoculture coffee without shade trees. Carbon stocks were quantified in aboveground biomass, belowground biomass, and soil organic carbon using plot-based measurements, allometric equations, and standard soil analyses. Results showed significant differences in carbon sequestration among systems (p < 0.05). The P. kesiya–coffee agroforestry system exhibited the highest aboveground and belowground carbon stocks, reflecting the contribution of fast-growing, deep-rooted shade trees. Although monoculture coffee maintained relatively high soil organic carbon due to intensive soil management practices, its total ecosystem carbon stock remained lower because of limited biomass accumulation. Overall, total ecosystem carbon was greater in tree-based agroforestry systems than in monoculture coffee, highlighting the importance of structural complexity, perennial biomass, and root dynamics in long-term carbon storage. These findings underline that the King’s Philosophy encourages sustainable land use that optimizes ecological restoration potential while enhancing adaptive capacity to climate change in Northern Thailand. By integrating perennial tree cover with agricultural production, coffee-based agroforestry emerges as a climate-resilient land-use model that simultaneously strengthens carbon sequestration, ecosystem stability, and long-term landscape sustainability in upland regions. Keywords: agroforestry systems, biomass accumulation, carbon sequestration, climate change mitigation, soil organic carbon
Causal Analysis of Resource Management Capacity, Economic Welfare, and the Effectiveness of the Integrated Area Development Program: A Study in the Pesawaran Forest Management Unit, Lampung Province Wulandari, Christine; Budiono, Pitojo; Kheynad; Haris, Achmad; Iwais, Niken Aurora; Vernanda, Aldina Refa; Alfarizi, Aditiya; Syafira, Hanna; Apriliani, Adella Putri; Sari, Fadela Yunika; Iskandar
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1316

Abstract

Sustainable rural development faces significant challenges due to climate change, land degradation, and economic pressures, particularly in regions heavily reliant on agriculture. Integrated area development (IAD) is one approach considered capable of integrating economic, social, and environmental aspects through agroforestry and strengthening local institutions. The IAD program is one part of the mainstreaming of the Social Forestry program of the Ministry of Forestry. However, empirical evidence regarding the specific role of community capacity in natural resource management as a mediator of IAD success remains limited. The purpose of this study is a quantitative causal analysis of the influence of economic welfare (X1) and natural resource management capacity (X2) on the success of IAD (Y1), as well as further research related to the mediating role of X2. Forty-two respondents were purposively selected for analysis using the SEM-PLS method, with natural resource management capacity and IAD success (Y1) as the main variables. The R-square value (0.618) and the goodness-of-fit (0.611) indicate that the research model is strong and relevant. Of the two existing hypotheses, all of them are proven significant; namely, increasing natural resource management capacity (X2) influences the success of IAD (Y1), and increasing community welfare (X1) influences increasing natural resource management capacity (X2) and also the success of IAD (Y1), where X2 is a mediating variable. This study argues that the policy for the success of IAD (Y1) in improving welfare must be explicitly implemented and directed toward strengthening community capacity for natural resource management. Keywords: agroforestry, community capacity, Integrated Area Development, KPH Pesawaran, SEM-PLS method
Mangrove Cover and Shoreline Changes Detection using Multi-Temporal Landsat Imagery and Digital Shoreline Analysis System (DSAS) in Labuhanbatu Regency, Indonesia Samsuri; Zaitunah, Anita; Amaliah, Nailatul; Sulistioadi, Yohanes Budi; Duryat
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1259

Abstract

Understanding the dynamics of the relationship between shoreline change and mangrove forest cover change is important for a foundation in mangrove and coastal forest management. The study aimed to analyze multitemporal changes in mangrove cover and shoreline in coastal areas and to investigate the correlation between these changes from 2011 to 2024. The research used remote sensing data to derive mangrove cover changes and detect shoreline changes from Landsat images acquired in 2011, 2015, 2019, and 2024. Land cover changes were examined using the operational land imager sensor, bands 3 and 6 of Landsat 8 images and bands 2 and 5 of Landsat 5 images, and shoreline changes were measured using the digital shoreline analyses system (DSAS). The result showed a reduction of 580.07 ha (26.48%) in mangrove cover area over eight years (2011-2019), followed by an increase of about 1,931.59 ha (54.54%) in 2024. Low abrasion (0.01-108.41 m) and low accretion (0-106.78 m) per four-year interval dominate in shoreline change. However, the Pearson correlation showed a moderate but non-significant association between changes in mangrove cover and shoreline changes (r = 0.307, p = 0.266). These results demonstrate that the correlation between mangrove cover change and shoreline change is non-linear, suggesting that shoreline change is affected not only by mangrove change but also by various other factors, including sedimentation events. It indicates that additional factors, including geomorphological dynamics, significantly influence mangrove forest dynamics. Keywords: abrasion, change detection, land cover, mangrove, shoreline
Predicting Lumber Recovery of Pinus patula using Forest Inventory Variables: Model Development and Validation across Circular Sawmills Mangi, Gabriel Wilbald; Makonda, Fortunatus Bulabo; Mauya, Ernest William
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1295

Abstract

The forestry sector plays a major role in Tanzania’s timber economy, yet lumber recovery estimates in sawmills still rely on manual, log-based measurements that limit accuracy and operational planning. This study developed predictive models to estimate lumber recovery of Pinus patula using forest inventory variables: diameter at breast height (DBH), tree height, and taper. Data were obtained from 80 trees, yielding 254 logs and 2,364 boards, processed at the Laimet 120 and Slidetec Tommi Laine (STL) circular sawmills. Regression models (logarithmic, log-linear, polynomial, and power) were fitted and evaluated using Akaike information criterion, coefficient of determination, root mean square error, mean absolute error, coefficient significance, and K-fold cross-validation. Model performance showed that all equations explained more than 73% of the variation in lumber recovery, with polynomial models providing the highest accuracy, lowest error values, and most stable cross-validated estimates. Predictor importance differed by sawmill: DBH and height were most influential for Laimet 120, while taper improved predictions for STL due to greater variation in stem form. These results demonstrate that forest inventory data can be used to reliably estimate lumber recovery. The developed equations provide sawmills and forest managers with a practical tool for planning log allocation, enhancing efficiency, and minimizing processing waste. Keywords: cross-validation, regression models, sawmill efficiency, tree characteristics, wood processing
Early Ecological Responses to Vegetation Enrichment for Pollinator Habitat Recovery using Tetragonula biroi in Community Agroforestry Systems Masniawati, Andi; Suhri, Andi Gita Maulidyah Indraswari; Yusran; Hasdiansyah, Andi; Ruli, Fitha Febrilia; Riendriasari, Septiantina Dyah; Litaay, Magdalena
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1343

Abstract

Pollination decline has become a major ecological concern in tropical agroforestry systems, where habitat simplification reduces floral diversity and threatens pollinator stability. This study aimed to evaluate early ecological responses to vegetation enrichment designed to restore pollination function in a community-managed agroforestry landscape in South Sulawesi, Indonesia. A paired-plot experiment was established to compare two adjacent plots (each 0.25 ha), an enriched plot and a control plot, in which floral diversity, foraging activity, colony productivity, and microclimatic parameters were monitored from September to November 2025. Indices of diversity and comparative statistical tests were used to analyse ecological variables and assess treatment effects. Shannon-Wiener floral diversity indices (H') increased from 1.45 to 1.66 after vegetation enrichment, resulting in greater phenological overlap in relation to the control plots as well. These changes correspond to a substantially increased rate of stingless bee (Tetragonula biroi) visits and a higher return frequency in enriched plots (p < 0.05). An increase in foraging activity was observed, with a significantly greater extension of the brood area and a rise in honey production, reflecting improved colony performance. Also, microclimatic measurements indicated lower temporal variance in ambient temperature and light intensity under enriched vegetation, suggesting a dampening effect on more stable foraging conditions. In general, these results imply that small-scale vegetation can induce an early return to functioning through a trade-off effect on resource diversity, colony strength, and environmental stability in the context of community agroforestry systems and do not contradict community-based landscape management. Keywords: agroforestry, meliponiculture, pollination, Tetragonula biroi, tropical restoration, vegetation enrichment

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