Journal of Sylva Indonesiana
Vol. 9 No. 02 (2026): Journal of Sylva Indonesiana

Mapping Mangrove Distribution in Muara Jenggalu, Bengkulu City Using Sentinel 2A-Imagery and OBIA

Syafa Aisyah Putri (University of Bengkulu)
Ayub Sugara (University of Bengkulu)
Zamdial (University of Bengkulu)



Article Info

Publish Date
29 Aug 2026

Abstract

Mangroves are coastal ecosystems that play a vital role in maintaining coastal stability, providing habitat for diverse biota, and reducing the impacts of climate change. However, these ecosystems continue to face threats, including in Muara Jenggalu, Bengkulu City. This study aims to map the spatial distribution of mangroves using Sentinel-2A imagery with the Object-Based Image Analysis (OBIA) method, which employs SVM (Support Vector Machine) as a statistical technique for prediction and classification, while also examining the relationship between the vegetation index (NDVI) and mangrove canopy cover. The results indicate that the segmentation scale influences classification accuracy, with scale 3 achieving a high accuracy of 97.17% and a mangrove area of 41.01 ha. The classification segments the study area into four main classes: mangroves, non-mangrove vegetation, water bodies, and non-vegetation. NDVI values ranged from 0.12 to >0.35, with mangrove areas primarily in the medium to high vegetation category. Simple regression analysis revealed a significant positive relationship between canopy cover percentage and NDVI values. The information acquired from this research can be used as a basis for planning the conservation and sustainable management of coastal ecosystems.

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Journal Info

Abbrev

Jsi

Publisher

Subject

Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

Description

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 ...