Agricultural Science
Vol. 10 No. 1 (2026): september in progres

Linking Forest-Area Conversion And Land-Cover Change In Central Sulawesi Grand Forest Park

Mohammad Tasdiq (Master of Agricultural Science Study Program, Postgraduate Program, Tadulako University , Palu, Central Sulawesi, Indonesia)
Adam Malik (Master of Agricultural Science Study Program, Postgraduate Program, Tadulako University , Palu, Central Sulawesi, Indonesia)
Imran Rahman (Master of Agricultural Science Study Program, Postgraduate Program, Tadulako University , Palu, Central Sulawesi, Indonesia)
Naharuddin (Department of Forestry, Faculty of Forestry, Tadulako University, Palu, Central Sulawesi, Indonesia)



Article Info

Publish Date
28 Jul 2026

Abstract

Studies on forest-area conversion generally examine land-cover dynamics and forest policy separately, leaving the relationship between formal changes in forest designation, actual landscape conditions, and their underlying institutional factors insufficiently understood. This study addresses this gap by integrating multi-temporal land-cover classification with policy, regulatory, and interview analyses to evaluate the conversion of part of the Central Sulawesi Grand Forest Park (Tahura). Sentinel-2 imagery from 2019, 2020, and 2025 was classified using the Random Forest algorithm on the Google Earth Engine platform. The spatial findings were complemented by document analysis and semi-structured interviews with three key informants from relevant forestry institutions. Classification performance showed Overall Accuracy values of 92.99%, 89.77%, and 95.30%, with Kappa coefficients of 0.8855, 0.81, and 0.86 for 2019, 2020, and 2025, respectively. The results indicate that the Tahura area decreased from 7,128 ha to 5,149 ha following Minister of Environment and Forestry Decree No. SK.6624/MENLHK-PKTL/KUH/PLA.2/10/2021. The converted area comprised 1,933 ha designated as Limited Production Forest and 46 ha as Other Land Use Areas. In 2025, the remaining Tahura was dominated by primary forest covering 3,105.38 ha (60.31%) and secondary forest covering 1,040.47 ha (20.21%). Although the conversion complied with formal procedures, it revealed tensions between regional development interests and conservation objectives. The novelty of this study lies in linking legally mandated forest-area conversion with empirically observed land-cover dynamics and institutional explanations within a single analytical framework. Practically, the findings provide a basis for post-conversion monitoring, rehabilitation prioritization, spatial-policy evaluation, tenure-conflict resolution, and the protection of ecologically important areas.

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Journal Info

Abbrev

agriscience

Publisher

Subject

Agriculture, Biological Sciences & Forestry

Description

AGRICULTURAL SCIENCE is a peer-reviewed, scientific journal published by Faculty of Agriculture Merdeka University Surabaya, ISSN 2597-8713 (Online) - 2598-5167 (Print). The aims of the journal are to publish and disseminate high quality, original research papers and article review in plant science ...