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Moehar Harahap
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INDONESIA
Journal of Sylva Indonesiana
Published by Universitas Sumatera Utara
ISSN : 26225093     EISSN : 26225158     DOI : 10.32734
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences
Journal of Sylva Indonesiana (JSI) is an international peer-reviewed biannual journal (February and August) published by TALENTA Publisher, Universitas Sumatera Utara and managed by Faculty of Forestry, Universitas Sumatera Utara. It is dedicated to interchange for the articles of high-quality research in the field of forestry and natural resources including Forest Management, Social And Economic of Forestry, Forestry Policy, Sylviculture, Forest Ecology, Plantation Forestry, Biotechnology, Forest Conservation, Biodiversity And Natural Resources, Wood Sciences And Technology, Biocomposite, and Non Timber Forest Product. The journal publishes state-of-art scientific articles in fundamental theory, experiments and simulation, as well as applications, with a systematic proposed method, sufficient review on previous works, expanded discussion and concise conclusion. As our commitment to the advancement of science and technology, the Journal of Sylva Indonesiana (JSI) follows the open access policy that allows the published articles freely available online without any subscription.
Arjuna Subject : -
Articles 136 Documents
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Analysis of Vegetation Density and Distribution of Green Belts in the City Center of Medan Using the Normalized Difference Vegetation Index Hidayat, Nur; Anita Zaitunah; Nelly Anna; Samsuri; Evalina Herawati; Alfan Gunawan Ahmad
Journal of Sylva Indonesiana Vol. 9 No. 01 (2026): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v9i01.23249

Abstract

This study evaluates the distribution and condition of vegetation within the green belts of Medan City Center in 2025 by employing the Normalized Difference Vegetation Index (NDVI) derived from Sentinel-2 satellite imagery, supplemented by field verification through purposive sampling. The analysis reveals that the findings indicate that non-vegetated category (NDVI < 0.1) dominated, encompassing 12,240.98 hectares or approximately 43.98%, whereas the dense vegetation class (NDVI 0.3–0.4) represents the smallest portion, covering only 3,009.70 hectares (10.81%) of the total area.Vegetation index values within these urban corridors range from a maximum of 0.55 to a minimum of -0.04, where lower values are predominantly associated with built-up areas and open land, while higher values are restricted to riparian buffers and fragmented green spaces. Spatial pattern analysis, utilizing a 500-meter buffer, highlights significant disparities in vegetation distribution and underscores the mounting pressure of urbanization, which has compromised the ecological functions of the city’s green infrastructure. Consequently, these findings emphasize the critical need for strategic planning and robust policy interventions to revitalize green open spaces as essential ecological infrastructure; therefore, the primary recommendation focuses on expanding green belt vegetation through intensification and protection efforts to ensure that ecological, social, and aesthetic functions are maintained sustainably within the Medan City Center.
Soil Health, Carbon Storage, and Ecosystem Service Valuation in Coffee Agroforestry Systems of Bener Meriah, Aceh Sri Julidar; Satriawan, Halus; Ernawita; Orang Kaya Hasnanda Syahputra
Journal of Sylva Indonesiana Vol. 9 No. 01 (2026): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v9i01.23341

Abstract

Agroforestry has been promoted as a sustainable land-use model to reconcile agricultural production with ecosystem service provision. This study evaluates soil health indicators and their economic valuation in coffee agroforestry versus monoculture systems in Bener Meriah, Aceh, Indonesia. Forty soil samples were analyzed for physical, chemical, and biological parameters, including bulk density, porosity, soil organic carbon (SOC), total nitrogen (N), available phosphorus (P), and soil organisms. Results indicate that coffee agroforestry consistently improves soil physical, chemical, and biological properties compared to monoculture systems, leading to enhanced carbon storage, nutrient retention, and hydrological regulation. These improvements translate into higher indirect economic values of ecosystem services, highlighting the multifunctional benefits of agroforestry for sustainable coffee production. These findings confirm that coffee agroforestry enhances soil health, supports multiple ecosystem services, and delivers higher economic benefits than monoculture. Agroforestry thus represents a multifunctional and sustainable landscape model for coffee production in tropical regions.
Household Food Security under Social Forestry: Evidence from a Forest Farmer Group in the Drylands of East Nusa Tenggara, Indonesia Fransiskus Xaverius Dako; Frenly Marvi Selanno; Yudhistira A.N.R. Ora; Sukriati Andesti Lamanda; Kletus Florianus Sera Gare; Adrin; Blasius Paga; Rusadi, Nusrah
Journal of Sylva Indonesiana Vol. 9 No. 01 (2026): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v9i01.23477

Abstract

Forest farmer households in tropical dryland areas represent a vulnerable group whose livelihoods depend heavily on forest resources and rain-fed agriculture, making their food security critical for rural resilience and sustainable development. This study analyzes the food security of forest farmer households who are members of the Fetomnasi Forest Farmers Group in Sillu Village, Fatuleu District, Kupang Regency, East Nusa Tenggara. The research examines the relationship between socioeconomic characteristics, the utilization of non-timber forest products, agroforestry practices, and household food security levels. Data were collected from 24 households through structured interviews and analyzed using descriptive statistics, the Household Food Security Index, and Pearson's correlation test. The results indicate an average food security index score of 0.65, classified as adequate food security. Variations in food security status among households are influenced by income, education, access to information, and the capacity to utilize non-timber forest products. The Fetomnasi Forest Farmers Group plays a strategic role in strengthening household food security through the coordination of agricultural and forestry activities, technical training, facilitation of government assistance, and the development of social capital such as trust and cooperation among members. However, institutional performance remains constrained by limited capital, infrastructure, and management capacity. Strengthening institutional governance, improving access to financial resources, and promoting agroforestry diversification are essential to enhance food security resilience and ensure the sustainability of forest-based livelihoods in tropical drylands. Futere research should examine longitudinal changes in household food security and evaluate the long-term effectiveness of institutional interventions in dryland social forestry systems.
Estimation of Blue Carbon Ecosystem Potential in The Mangrove Forest Tourism Area of Langsa Protected Zone Yanti, Lola Adres; Siregar, Astri Winda; Mona Fhitri Srena; Fikrinda; Ariz Umar Ramadhan; Afrizal Murdi; Berutu, Febrian Supriadi Laba Pardamean; Mizan Jrohna; Ilham Hanafi; Aang Kunaifi; Dedy Fitriandi
Journal of Sylva Indonesiana Vol. 9 No. 01 (2026): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v9i01.23828

Abstract

Mangrove forests are vital coastal ecosystems that sequester large amounts of carbon, helping mitigate climate change. Indonesia has the world’s largest mangrove area, including the Langsa Protected Mangrove Forest in Aceh, which holds high biodiversity and significant blue carbon potential. The Mangrove Forest Tourism Area in Langsa is one of the largest in Southeast Asia; therefore, estimating its carbon potential is essential to support Indonesia’s commitments to the Paris Agreement and carbon trading initiatives. This study aims to (1) identify tree species diversity in mangrove, and (2) estimate aboveground biomass, carbon stock, and carbon sequestration in the Langsa Mangrove Forest Tourism Area. A purposive sampling method was used for the initial plot, followed by systematic sampling. From 369.01 hectares of mangrove area, 19 plots were established with sizes of 10 m × 10 m for trees, 5 m × 5 m for saplings, and 2 m x 2 m for seedlings. Carbon stock estimation employed species-specific allometric equations. Out of 293 individual trees, four tree species, namely Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, and Ceriops tagal, were identified, with most ranging within 3.18–4.61 cm diameter classes. The highest aboveground biomass, carbon stock, and carbon sequestration were found in plot 19, at 27.66 ±13.18 tons/ha), 13.00 ±6.20 tons C/ha), and 47.67 ±22.71 tons CO₂/ha), respectively. These findings highlight the substantial blue carbon potential of the Langsa Mangrove Forest in a protected area, emphasizing its importance in regional conservation strategies.
Diversity of Migratory Waterbirds along the Deli Serdang Coast, North Sumatra Silalahi, Fachrul Azhari; Erni Jumilawaty; Hesti Wahyuningsih
Journal of Sylva Indonesiana Vol. 9 No. 01 (2026): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v9i01.23890

Abstract

Migratory waterbirds rely strongly on wetland ecosystems as staging and refueling sites along their migration routes, including those situated within the East Asian–Australasian Flyway (EAAF) traversing Sumatra. This study aim to record the species diversity, evenness, and community similarity of migratory waterbirds along the Deli Serdang coast, North Sumatra. Field surveys were conducted from September to October 2025 at three intertidal mudflat sites: Paluh Getah, Muara Sei Tuan, and Bagan Serdang. Species identification was performed using binoculars, a monocular telescope, and photographic documentation. Waterbird assemblages were quantified using the concentration count and block methods, followed by calculation of the Shannon–Wiener diversity index (H′), species evenness (E), and inter-site similarity (IS). A total of 21 migratory waterbird species were recorded, with the Pacific Golden Plover (Pluvialis fulva) representing the most abundant species (582 individuals). Diversity (H') indices across all sites indicated moderate diversity, whereas E values were consistently high, reflecting relatively uniform species distributions. The most similar avian community was observed between Paluh Getah and Muara Sei Tuan (93.75%), likely attributable to similar habitat structure and levels of anthropogenic disturbance. These findings demonstrated that the mudflats of Deli Serdang constitute an ecologically important staging habitat for migratory waterbirds along the EAAF, including several species of conservation concern. Strengthened habitat protection and management are therefore essential to support the existence of migratory populations dependent on this coastal region.
Ethnobotanical Study and Conservation Status of Medicinal Plants Used by Local Community in Desa Namo Bintang, North Sumatra Ulfa, Mariah; Harisyah Manurung; Chetyfani Aquilera br. Ginting; Dita Sari Prabuningrum
Journal of Sylva Indonesiana Vol. 9 No. 01 (2026): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v9i01.24720

Abstract

The indigenous communities in North Sumatra exhibit unique languages, rituals, traditional dwellings, and profound cultural heritages, encompassing indigenous knowledge of medicinal botany. Modernization, apathy and lifestyle changes among younger generations have put this traditional knowledge in risk of extinction due to its oral transmission throughout generations. Therefore, this study aims to capture the traditional knowledge by ethnobotanical surveys in Desa Namo Bintang for the preservation of potentially vital details. The number of respondents in this study was determined using the Slovin formula with a 10% margin of error. Data collection was conducted by interviewing 97 respondents selected using purposive sampling. The ethnobotanical data recorded were the scientific and vernacular names of medicinal plants, growth form, family, plant part used, preparation methods, medicinal benefits/types of diseases that can be treated, number of plant individuals, conservation status and documentation. The conservation status was obtained from the website of IUCN Red List. This study identified 85 species of medicinal plants in Desa Namo Bintang, classified into 37 families. The predominant medicinal herb utilized by respondents was Zingiber officinale, Cymbopogon citratus, Curcuma longa, Kaempferia galanga, and Curcuma xanthorrhiza. The family Zingiberaceae represented the greatest number of species. Leaves were the most commonly employed ingredient, and the main preparation method was decoction. The evaluated medicinal plants were mostly categorized as Least Concern (LC), while one species, Swietenia mahagoni, was classified as Near Threatened (NT). The necessity for local conservation depends on both the intensity of community use and the sustainability of harvesting practices. The current study proposes community-based conservation by developing cultivation plots and implementing sustainable harvesting.

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