Abstract
The paper presents a taxonomic, areographic and belt-andzonal analysis of the high-mountain flora of the Kurai Ridge. The flora of the region in question contains 312 species of plants, referred to 143 genera belonging to 48 families. Analysis of the taxonomic structure of the high-mountain flora of the Kurai Ridge has shown the following most abundant plant families: Asteraceae, Ranunculaceae, and Poaceae. For the variety of the genera, the following genera are predominant: Carex, Pedicularis, Salix, and Oxytropis. The areographic analysis has demonstrated that the said species are of the North Asian (21 %), South Siberian (19.4 %) and Holarctic (17.4 %) origins. Dominant in the belt-and-zonal range are the following species: high-mountain (23.2 %), light-coniferous forest (17.7 %) and Arctic Alpine (17.4 %) species. In general, the composition and structure of the high-mountain flora of the Kurai Ridge are determined by its geographic position at the boundary of Central and South-Eastern Altai and by decrease in the amount of precipitation in the south-eastern direction.
Highlights
The caenotic and floristic variety of the high-mountain belt of the Kurai Ridge is related to its geographic position, variability of the landscape forms, the composition of the rocks forming it and inhomogeneity of the climatic conditions
The flora of the high-mountain belt of the Kurai Ridge consists of 312 species of higher vascular plants, which refer to 143 genera from 48 families
The results of the analysis showed that most species are related to the highmountain belt-zonal complex (23.2 %), which is typical of the Kurai Ridge (Fig. 2)
Summary
The caenotic and floristic variety of the high-mountain belt of the Kurai Ridge is related to its geographic position, variability of the landscape forms, the composition of the rocks forming it and inhomogeneity of the climatic conditions. All these factors lead to formation of great caeno-floristic variety in the small territory [1]. P.N. Krylov’s works contain the first data on the floristic variety of the highlands of Altai; he was the first to identify the belt-zonal groups in the high-mountain vegetation of Altai. The objective of the study: to make the taxonomic, areographic, and belt-and-zonal analysis of the high-mountain flora of the Kurai Ridge
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