ASSESSMENT OF EAST-ASIAN PLANTS POPULATION TRAITS IN DIFFERENT PARTS OF THEIR AREA
D.V. SANDANOV
Institute of General and Experimental Biology, SB RAS, 670047 Ulan-Ude, Sakhyanovoi str., 6
denis.sandanov@gmail.com
Keywords: Scutellaria, Sophora, Astragalus, distribution of plants, ecological gradients, ecological scales, population optimum, Zabaikaliye, Inner Mongolia
Abstract
Populations of East-Asian species (Sсutellaria baicalensis, Sophora flavescens, and Astragalus membranaceus) in the
territory of Zabaikaliye, the Russian Far-East and Inner Mongolia were studied. A total of 363 relevees were
processed using the ecological scales, and ranges of environmental conditions were evaluated. To assess population
optimum, the individual and cenopopulation features were taken into account. As the most appropriate,
the ecological scales method proposed by I.A. Tsatsenkin et al. (1978) for analyzing forest-steppe communities
was used. By integrating data on plant communities and populations the optimal conditions for each species
were revealed. Generally, habitats of South and South-Eastern part of Zabaikaliye and the Russian Far-East are
the most favorable for the species under study. We conclude that moisture might be the key factor for functioning
of populations of East-Asian species.
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