ECOSISTEMS PATTERN OF СENTRAL TUVINIAN BASIN

Golubyatnikov L.L. , Zarov E.A.

Ecology. Economy. Informatics.
System analysis and mathematical modeling of ecological and economic systems.
2021, issue 6, pp. 75-78
(in Russian with English abstract)

Summary

To analyze the pattern of ecosystems on the territory of the Central Tuvinian Basin the images from the Landsat-8 satellite for the summer period of 2020 were used. Satellite images were processed in the GRASS geographic information system using the SMAP classification method. The basin under study is located in the center of the Republic of Tuva. The region is characterized by a sharply continental climate with low snowy and very cold winters, hot and dry summers. Based on satellite information and the cartographic information, 13 land units were identified in the studied territory of the Central Tuvinian Basin. The total area of the Central Tuvinian Basin is 18.6 thousand km². A mosaic ecosystem structure of typical, dry and desert steppes is presented on the flat territory of the basin. Based on the satellite images, a map-scheme for ecosystems pattern on the territory of the Central Tuvinian Basin was made. Steppe vegetation is gradually occupying the abandoned arable lands. The area of cultivated fields in the Central Tuvinian Basin has decreased by 90% over the past 30 years. There was an expansion of the territories of dry and desert steppes with the participation of shrubs of Caragana Bunge. Desertification processes are ongoing in the Central Tuvinian Basin.