Methods of GI modeling of biogenic substances removal to the Gulf of Finland from forest vegetation cover

https://doi.org/10.35595/2414-9179-2020-2-26-137-150

View or download the article (Rus)

About the Authors

Alexey G. Osipov

Military Space Academy named after A.F. Mozhaisky,
Zhdanovskaya str., 13, St. Petersburg, 197198, Russia,

Georgy K. Osipov

Military Space Academy named after A.F. Mozhaisky,
Zhdanovskaya str., 13, St. Petersburg, 197198, Russia,
E-mail: Osipov-G-K-2005@yandex.ru

Vasily F. Kovyazin

Saint Petersburg Mining University,
Vasilievsky isl., 21st line, 2, 199106, St. Petersburg, Russia,
E-mail: vfkedr@mail.ru

Abstract

Biogenic pollution of water bodies and their eutrophication is one of the most serious environmental problems of our time. One of the sources of water pollution with biogenic substances is forests, which belong to the background sources of biogenic load. Currently available methods for assessing the removal of nutrients from the forest vegetation cover do not provide the desired results, which causes an urgent need for their improvement.

This article describes the method developed by the authors of geoinformation modeling of removal of biogenic substances from the forest vegetation cover to water bodies, taking into account the spatial distribution of vegetation in the catchment area, its species composition and absorption of biogenic substances during their migration.

The Eastern part of the Gulf of Finland was adopted as the object of testing of the developed method. this is due to the fact that eutrophication processes are actively manifested within its water area.

The volume of the background biogenic load on the Gulf of Finland, formed during the decomposition of the fall of the natural vegetation cover in the catchment area, was determined based on the specific removal of biogenic substances from plant communities and their absorption during migration “plant community — water object”.

The total background biogenic load on the eastern part of the Gulf of Finland, formed as a result of decomposition of natural vegetation cover, was 170.21 t/year for the northern catchment for nitrogen, 12.14 t/year for phosphorus, and 207.31 t/year for the southern catchment for nitrogen , and 15.68 t/year for phosphorus.

The data obtained do not contradict the results of other authors who study the background biogenic load on the Gulf of Finland.

The method can be effectively used in the development of measures to reduce the nutrient load on water bodies and planning of economic activities in catchments.

Keywords

Gulf of Finland, background biogenic load, GIS “Map 2011”, GI modeling

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For citation: Osipov A.G., Osipov G.K., Kovyazin V.F. Methods of GI modeling of biogenic substances removal to the Gulf of Finland from forest vegetation cover InterCarto. InterGIS. GI support of sustainable development of territories: Proceedings of the International conference. Moscow: Moscow University Press, 2020. V. 26. Part 2. P. 137–150. DOI: 10.35595/2414-9179-2020-2-26-137-150 (In Russian)