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Dynamics of an ecosystem implies any changes in area borders location and replaces in the initial species composition. Generally, dynamics occurs under the impact of natural and anthropogenic factors. They always act together, diminishing or intensifying each other. The authors consider phenomenon woodlands case study, which are located on different mountain ranges both in semi damp and semiarid sectors of Altai-Sayan ecologic region. It should be noted that species composition of woodlands is various even within ...