Peatland Transformation: Land Cover Changes and Driving Factors in the Kampar Peninsula (1990–2020)

Abstract

The Kampar Peninsula, spanning approximately 735,091 hectares, is critical for its carbon reserves and biodiversity, including the endangered Sumatran tiger. However, nearly half of the 4 million hectares of peat swamp in the region is deforested, drained, decomposing, or burning, largely due to settlements and development projects. This research employs a mixed-method approach, using quantitative spatial analysis of Landsat imagery from 1990 to 2020 based on the Spectral Mixture Analysis (SMA) model to detect forest disturbances and classify land cover changes, utilizing the Normalized Difference Fraction Index (NDFI). Ground truthing validates the image interpretation with field conditions. Additionally, qualitative analysis through interviews and regulatory review examines spatial change trends, context, and driving factors. The result showed, over 30 years, that natural forest in the Kampar Peninsula decreased significantly from 723,895.30 hectares in 1990 to 433,395.20 hectares in 2020. The primary factors driving land use changes include the construction of access roads by oil companies in 1975, leading to extensive deforestation, and government policies during the New Order period that issued forest exploitation concessions and promoted transmigration programs, resulting in widespread establishment of oil palm and acacia plantations.

Keywords

• Kampar Peninsula
• peatland
• NDFI
• spatial analysis
• Riau Province