Abstract
Siak Regency, Riau Province is one of the most forest and land fire-prone regencies in Indonesia. Most of the fires occur in peatland areas which contributes to the transboundary haze pollution in the region. Despite limited studies, fire severity assessment is an essential step in post-fire activities to estimate ecological impacts and economic impacts and law enforcement. This study aims to estimate fire severity using Sentinel-2 imagery at Siak Regency, Riau Province. The methods applied Normalized Burn Ratio on Sentinel-2 Imagery as an identification model based on reflectance value for 2019 imagery. The study revealed that burned areas in Siak Regency could be classified into four fire severity classes: low fire severity, moderate-low fire severity, moderate-high fire severity, and high fire severity. High fire severity was found mainly at Sungai Apit and Mempura Districts.
Highlights
Riau province is a peatland-dominated area in Indonesia covering 3.87 million ha, the largest in Sumatera
Most of the fires occur in peatland areas which contributes to the transboundary haze pollution in the region
The results indicated that the burned areas in Siak Regency were classified into four fire severity classes by difference Normalized Burn Ratio
Summary
Riau province is a peatland-dominated area in Indonesia covering 3.87 million ha, the largest in Sumatera. The peatland fire always occurs annually and contributes to the region's transboundary haze pollution, closely related to an acute respiratory infection problem experienced by the community in some areas of the province (Syaufina and Hamzah, 2021). One approach to identifying fires' impacts is the fire severity assessment, which measures the impacts of fires on vegetation and soil properties. This approach can be used for forest fire impact assessment as one of the activities in forest fire control. Forestry Law no. 41 of 1999 and Government Regulation Number 45 of 2004 on Forest Protection-Article 22, Article 23, Article 24, and Article 25 describe
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