STRUCTURE OF THE EAST ASIAN CHOROLOGICAL GROUP OF FLORA OF FOREST-STEPPE ECOSYSTEMS OF CENTRAL SIBERIA

Antipova Ekaterina Mikhailovna

The structure of geographical elements is one of the most important characteristics of flora. Based on the analysis of generic and specific areas, genetic groups are established and patterns of flora formation are clarified. The object of the study was the flora of vascular plants of the island forest–steppes of Central Siberia - Krasnoyarsk, Kansk and Achinsk (Krasnoyarsk Territory). The composition of the flora was revealed by the method of specific floras of A.I. Tolmachev. The purpose of the work is to study the geographical structure of the East Asian chorological group of forest–steppe flora with the characteristics of its constituent types of habitats. The allocation of types of habitats was carried out on the basis of the concept of phytochorions, on the principle of correspondence of the distribution of species to the natural (botanical-geographical) zoning of the Earth. The basis for determining the types of habitats was the global floristic zoning of A.L. Takhtajyan, for the Asian part of Russia – L.I. Malyshev et al., Russia and the flora of the Earth – R.V. Kamelin. As part of the East Asian chorological group of forest-steppes of Central Siberia, 2 geographical elements (90 species, 6.58%) were identified, 12 types of habitats were identified, occupying the 5th place in the entire flora and 3 forest-steppes.

Keywords:chorological analysis; the concept of phytochorions; areal types; local floras; floristic zoning; Krasnoyarsk forest-steppe; Kansk forest-steppe; Achinsk forest-steppe; Siberia; geographical elements; Holarctic