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All Journal Jurnal TAMBORA Journal of Sylva Indonesiana
Anita Zaitunah
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Economics, Econometrics & Finance Industrial & Manufacturing Engineering

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Analysis of Land Cover Change: Case Study in Concession Area of PT. GRUTI Unit Tele I North Sumatra Siti Latifah; Zulkarnain Batubara; Anita Zaitunah; Seca Gandaseca
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.v9i01.20138

Abstract

Changes in cover are the result of human activities and natural phenomena. Land cover in an area always changes over time. This study aims to identify and analyze the condition of land cover in 2013 and 2023 in the concession area of ​​PT. GRUTI Unit Tele I obtained through guided classification using ArcGIS 10.4 software and Microsoft Excel. The results of the study showed that throughout 2013-2023 in Unit Tele I there was a change in the area of ​​forest from 14,468.85 ha to 14,138.91 ha. In non-forest areas, there is an increase in area from 443.43 ha to 874.98 ha, and open areas have decreased from 410.22 ha to 402.21 ha. Changes in land cover are dominated by land occupation by the community due to a lack of supervision from concession managers and the absence of production activities in the area.
Land Use Change Modeling to Support the Management Plan of Protected FMU Unit II FMU Region XV Kabanjahe Fauziah Sahara; Anita Zaitunah; Bejo Slamet
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.v9i01.20518

Abstract

Deforestation results in environmental degradation, so it is necessary to conduct a study to determine land use changes that occur and predict land changes with appropriate directions to support the Protected FMU Unit II FMU Region XV Kabanjahe management plan. This study aims to analyze changes and predictions of land use in 2013-2033, factors that influence land use change, and formulate directions for land use plans in Protected FMU Unit II FMU Region XV Kabanjahe. This research uses a Geographic Information System approach with the Artificial Neural Network (ANN) method prediction model. Factors driving land use change as model inputs consist of distance to road, distance to permit, distance to settlement, distance to river, elevation, geology, soil type, and slope. The results showed that there has been a decrease in dryland forest by 6,957 ha in the 2013-2018 period, and the driving factor that has the highest degree of relationship based on the results of the correlation test is the distance to the road, which is 0.2444. The land use change prediction model has an accuracy of 89.42% based on Kappa Index Agreement (KIA). The direction of the land use plan in Protected FMU Unit II FMU Region XV Kabanjahe in 2033 consists of Protected Forest Area which has the largest area, namely 64,678 ha, Production Forest covering 7,077 ha, and Limited Production Forest covering 9,278 ha.
Analysis of Vegetation Density and Distribution of Green Belts in the City Center of Medan Using the Normalized Difference Vegetation Index Nur Hidayat; 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.
PENGAWASAN TERSENTRALISASI BERBASIS WEBGIS DALAM MONITORING PENGELOLAAN HUTAN BERKELANJUTAN Zulkarnain Batubara; Siti Latifah; Anita Zaitunah
Jurnal TAMBORA Vol 10 No 2 (2026): Edisi 27
Publisher : Wakil Rektor 3, Direktorat Riset, Publikasi dan Inovasi, Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/tambora.v10i2.7635

Abstract

Perubahan paradigma kehutanan di Indonesia yang mengarah pada sistem multiusaha berkelanjutan mendorong dibutuhkannya inovasi terutama dalam monitoring areal. PT. Gunung Raya Utama Timber Industries (GRUTI) sebagai pemegang izin PBPH, menghadapi tantangan monitoring akibat unit areal yang tersebar dan aktivitas masyarakat yang kompleks. Penelitian ini bertujuan untuk membangun dan menguji aplikasi WebGis sebagai alat monitoring tersentralisasi yang mampu memantau perubahan lahan, realisasi pemanenan, serta kegiatan penanaman hutan dan kopi. Metode penelitian meliputi pengembangan aplikasi berbasis WebGis, pengumpulan data spasial dan non-spasial, uji kelayakan dan usability menggunakan System Usability Scale (SUS), serta pencapaian target produksi, penanaman hutan, dan penanaman kopi. Hasil penelitian menunjukkan bahwa WebGis sangat layak untuk digunakan dengan nilai SUS sebesar 85,83. WebGis mampu memvisualisasikan okupasi lahan yang signifikan di areal konsesi dalam satu dekade serta memuat informasi realisasi pemanenan kayu, penanaman hutan dan penanaman kopi. Penggunaan WebGis menunjukkan bahwa sistem ini sangat valid, efektif, dan diterima pengguna, dimana informasi dapat berupa bottom up secara valid sehingga dapat menjadi bahan pertimbangan menyeluruh. WebGis terbukti menjadi solusi monitoring yang efisien dan terpusat dalam mendukung pengelolaan hutan yang adaptif dan berkelanjutan.
Co-Authors Alfan Gunawan Ahmad Bejo Slamet Evalina Herawati Fauziah Sahara Nelly Anna Nur Hidayat Samsuri, Samsuri Seca Gandaseca Siti Latifah Siti Latifah Zulkarnain Batubara Zulkarnain Batubara