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Satellite-based assessment reveals burn severity across Uttarakhand, aiding in restoration efforts.
During the 2024 fire season, the Himalayan state of Uttarakhand experienced widespread wildfire activity, particularly across the districts of Nainital, Champawat, and Udham Singh Nagar. These events caused substantial ecological disturbance within a region characterized by fragile mountain ecosystems and fire‑prone forest types. This study presents a satellite‑based assessment of wildfire burn severity using multi‑temporal Landsat‑8/9 and Sentinel‑2 surface reflectance imagery. Burn severity was evaluated using the Normalized Burn Ratio (NBR) and its differenced form (dNBR), derived from pre‑fire and post‑fire observations. Changes in Near‑Infrared (NIR) and Shortwave Infrared (SWIR) reflectance were analysed to identify relative variations in fire impact across the landscape. The resulting burn‑severity map delineates zones of high, moderate, and low fire impact, providing spatially explicit information for post‑fire restoration planning, erosion control, and long‑term wildfire risk management in the Himalayan region.
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Sreelakshmi et al. (2026) studied this question.
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