ECOLOGICAL-GEOGRAPHIC COMPOSITION OF PLANT SPECIES OF TAIGA-STEPPE COMMUNITIES ON LAKE BAIKAL WESTERN SHORE

Phytocoenoses in environmental contact zones reveal in more detail modern trends in the genesis of ecosystems of any range of their organization. Phytocoenoses formed under the extrazonal conditions within definite environmental zones (plant types) play a role of informational models of environmental changes. Such communities can serve as indicators of existing processes and of occurred changes for last decades as well as reflect trends of spontaneous and anthropogenic dynamics of plants formation under definite physical-geographic conditions on a concrete territory. We revealed ecological geographic composition of plants species in taiga-steppe communities reflecting modern structural-dynamic organization of plants at one Pre-Baikalian site, which is contrast by its environmental conditions. It reflects the peculiarities of phytocoenoses formation at the contact of light-coniferous taiga and extrazonal steppe of Lake Baikal western shore.