A range of key testing sites was used to show the capabilities of different methods of vegetation dynamics analysis. Recognition of vegetation according to direct features and comparison of maps are applied with space photos made at different time. The indirect methods of analysis also provide a wide spectrum of possibilities. Such a work is based on study of spatial structure of vegetation cover. The analysis of space photo patterns with further field verification works well. Application of topo-ordination schemes of vegetation allows to forecast plant community changes.Key words: vegetation dynamics, spatial structure of vegetation, steppe and forest-steppe zone, Western Siberia.