Air pollution from fires of drained peatlands in Tomsk region
M.N. Alekseeva1, E.A. Golovatskaya2, I.G. Yashchenko1
1Institute of Petroleum Chemistry of the Siberian Branch of the RAS, Tomsk, Russia
2Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
Keywords: пожары, гари, космические снимки, геоданные, леса, болота, атмосфера, загрязняющее вещество, fires, burnt areas, satellite imagery, geodata, forests, swamps, atmosphere, pollutant
Abstract
In the created geoinformation system, the analysis of air pollution from fires of drained peatlands in the territories of Bakcharsky and Shegarsky forest districts of the Tomsk region has been performed. Parameters of horizontal and vertical perturbations in the air layer due to a fire in the area of Iksa were calculated, which including a maximum vertical dimension of the convective column (mixture of air with products of complete and incomplete combustion rising above the fire), heat emission, and the propagation velocity of the aerosol cloud of combustion products. The volumes of pollutant emissions from the fire have been calculated on the basis of geodata and those on the biomass of vegetation cover of the Iksa site. It is shown that significant amounts of carbon monoxide, carbon dioxide, and methane were emitted into the atmosphere due to the fire. The data on emissions of nitrogen oxide, soot, and ozone are also reported. At the present time, this site is characterized by the restoration of vegetation cover; the positive dynamics of the NDVI vegetation index has been calculated. The accumulation of biomass in the Iksa site and the presence of dead wood, as well as a road network indicate a high risk of vegetation and peat ignition and pollutant emissions to the atmosphere.
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