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[HTT23-09] Correlation between forest fires in Indonesia and soil water content through the satellite imaging and the direct spectral measurements of soil
Keywords:Forest fire, Indonesia, Soil water, Remote sensing, Reflection spectrum
This study aims to establish a method to discover the correlation between the regions of the forest fires and the surface soil water with a high spatial resolution using remote sensing. Our approach is 1) the direct spectral measurements of soil with a several soil water content and 2) the satellite image analysis.
First, three areas of satellite images were used; Blang Pidie, Riau, and Martapura. Each area locates in Pulau Smatera. We estimated the soil water content using NDWI (Normalized Difference Water Index), NDSI (Normalized Difference Soil Index). The seasonal change of NDWI and NDSI was observed by about 0.3. This result indicates that we can distinguish between the wet and dry season. We found that the forest fires occur a lot in each area from September to October (the end of dry season). This suggests that there is a correlation between the forest fires and the soil water content. We also made the two dimensional maps of NDWI and NDSI, to make sure the correlation between the forest fires and the indices. Moreover, considering that the land of Indonesia is covered with peat moss, we measured the spectra from peat moss actually.