Ground-based remote studies of post-pyrogenic landscapes of the Tomsk region
M.N. Alekseeva, I.V. Russkikh, I.G. Yashchenko, P.B. Kadychagov
Institute of Petroleum Chemistry of the Siberian Branch of the RAS, Tomsk, Russia
Keywords: vegetation index, satellite image, vegetation map, fire, bog, woodland, spectral coefficient
Abstract
A comprehensive approach to assessing the state of the post-pyrogenic landscapes of the Tomsk region using satellite images and ground data is suggested. Vegetation maps, maps of vegetation indices NDVI and SWVI are constructed on the example of key sections of the Bakchar-Iks and Ob-Tom interfluves. It was found that the greatest degradation and burning of vegetation cover occurred in the pyrogenic area of the Bakchar bog. 1-2 months after the fires in the bog and in the swampy forest, NDVI decreased by 0.36 and 0.35 units, respectively. It has been established that in the third year after the fire in the Bakchar bog, phytomass increases with a change of pre-fire phytocenoses. The results of IR spectrometry indicate the highest aromatization of peat and plants of burnt areas as compared to background ones.
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