Change of natural vegetation of intermountain hollows of Tuva under the influence of anthropogenous factors

The article examines the destabilizing impact of large hydraulic structures with backwater more than 15 m, which are quite well known for large reservoirs at a distance of 100 km along the stream and the band up to 5-10 km inland from both banks of the river. At the same time, impact on floodplain and valley ecosystems high pressure dam for mountain areas has not been studied. The aim of this work is to study changes in patterns of species composition and dynamics of natural ecosystems under the influence of the Sayano-Shushensk reservoir.