Purpose – the study of forest fires on the territory of Irkutsk region and its districts as a source of environmental problems: 1) pollution in cities with carcinogenic combustion products and 2) the effect on the number of fishing fauna.
The dynamics of forest fires is considered. Over the past 30 years, there has been a tendency to increase the area of forest fires covered by fire. Maximum fires were observed in 2014-2016. Areas with high forest burning were identified.
Analyzed specific emissions of products of incomplete open burning of vegetative materials. The average specific emissions of carbon monoxide, soot, Benz(a)pyrene were found, with the help of which the gross emissions of harmful substances from forest fires in the region were estimated. The contributions of anthropogenic and natural sources of emissions of Benz(a)pyrene to the atmosphere are compared.
The dynamics of the content of Benz(a)pyrene in the air of Irkutsk region cities is studied. A high degree of atmospheric pollution has been established. It is shown that the main sources of emissions of Benz(a)pyrene are thermal power of coal combustion, aluminum production and furnace heating by solid fuels.
Dynamics of the content of Benz(a)pyrene in the atmosphere of cities and indicators of fires in the region and its districts are compared. It is established that the content of Benz(a)pyrene in the air in many cities linearly depends on the area of forest fires. The accuracy of correlations has been higher in recent years, indicating an increase in the role of forest fires in atmospheric pollution compared to other sources.
On the basis of statistical data, the dynamics of forest fires and the number of hunting and fishing fauna in the Irkutsk region and one of its specially protected natural area-Olkhon district were studied. Against the background of positive dynamics of indicators of forest fires, the dependence of the number of animals on their family, species and fires in the adjacent areas has been established. With the help of linear correlations, the positive impact of fires on the population of the family of deer (Cervidae), canids (Canidae), cats (Felidae), bears (Ursidae) and pheasants (Phasianidae), due to one of such factors as the migration of animals from the burning nearby areas, was confirmed. Unstable and negative population dynamics was revealed for the populations of the Kunya family (Mustelidae).
|Publication||IOP Conference Series: Earth and Environmental Science|
|Affiliation of speaker||Иркутский национальный исследовательский технический университет|
|Position of speaker||профессор|