Changes in floristic composition of plant-communities and their correlation in the steppe and forest steppe zones of the Altai region, cansed by various human activities. Antropogenic transformation of steppe, forest and medow vegetation under the influence of graring, riverbed regulation, recreation and other factors has been analyzed here. There are main stages of degradation of the bottomland and the dry meadows, steppes. Changes of pine forest and birch forest under the influence of graring and recreation are described in this article. The vegetanioral changes of the forest-steppe and stepp zones and problems of its rational use and protection have been shown here.