ABSTRACT The results of studies of the peculiarities of formation of phytocenoses in environments contact sites of the western and eastern coasts of the Lake Baikal has been showed in this paper. On the base of geobotanic profiling combined with soil one, the structure and dynamics of phytocenoses forming under the conditions of mutual development of light-coniferous taiga forest and of extra zonal steppes. Edaphic conditions and placement of phytocenoses are main trigger factors determining the ways of plant cover development in this part of Lake Baikal basin. We discuss the characteristics properties inherent in the linkage of the dynamics and spatial variability of the vegetation with the change of climate in the Baikal region. The regional conditions of the physiogeographic environment had given rise to structurally highly contrasting plant communities in this region. The increase in yearly mean summertime amounts of rainfall, combined with the rise of yearly mean winter temperatures over the last years were conducive to changes in the spatial structure of vegetation. The boundary between the types of vegetation undergoes smoothing. The upper boundary of forest is altered because of changes of the environment that are responsible for the zonality and properties of vertical zonality of the vegetation on the mountains surrounding Lake Baikal. Changes in the vegetation serve as indicators of climate change as well as providing diagnostic tools for the genesis of the Baikal region’s natural environment.
Cite this paper
Sizykh, A. , Voronin, V. , Griczenuk, A. and Sizykh, S. (2012) The structure of the plant communities in the different environment contact sites on the base of the soil-geobotanic profiling in the changing climate of Lake Baikal region. Natural Science, 4, 771-777. doi: 10.4236/ns.2012.410101.
 Osipov, S.V. (2006) Use of notion “flat interfluve” and “zonal habitat” in revealing zonal vegetation and zonal ecosystems. Geographic Services, 2, 59-65.
 Cherkashin, A.K. (2005) Polysystematic modeling. Nauka, Novosibirsk.
 Grichuk, M.P. (1955) Toward the history of the vegetation in the Angara River basin. Dokl. Akad. Nauk SSSR, 2, 335-338.
 Dylis, N.V., Reshikov, and Malyshev, L.I. (1965) The vegetation. In: The Prebaikalia and Transbaikalia, Moscow, pp. 225-281.
 Belova, V.A. (1985) The vegetation and climate of the late cainozoic in the south of east Siberia, Novosibirsk.
 Savina, L.N. (1986) Taiga forests of northern Asia in the holocen, Novosibirsk.
 Bezrukova, E.V. (2002). The vegetation and climate of the south of east Siberia in the late neopleistocene and holocene. Author’s Abstract of the Dissertation, Irkutsk.
 Gustokashina, N.N. (2003) Long-term changes of the main climate elements on the territory of the Prebaikalia. Irkutsk.
 Thomas, T.V. and Diane, C.L. (1988) Recent vegetation changes along the forest/steppe ecotone of Northern Patagonia. Annals of the Association of American Geographers, 78, 93-111.
 Galazy, G.I. and Molozhnikov, V.N. (1982) The history of botanical studies at Lake Baikal. Novosibirsk.
 Sochava, V.B., Lipatova, V.V. (1960) Groups of steppe vegetations in Amur subtaiga. Bulletin of MOIP, section Biology, 3, 263-276.
 Preyn, Ya.P. (1892) Preliminary report on botanical studies of Balagansk District and Irkutsk City suburbs. East-Siberian Branch of Russian Geographic Society, 23, 29-53.
 Tsybzhitov, Ts.Kh., Tsybikdorzhiev, Ts.Ts. and Tsybzhitov, A.I. (1999) Soils of Lake Baikal basin. Nauka, Novosibirsk.