PLANT COMMUNITIES OF ENVIRONMENTAL CONTACT AS INDICATORS OF DIRECTION OF THE VEGETATION FORMATION (some theoretical aspects)

To study of the vegetation communities of the environments transition environment zones were showing the present tendency forming of the vegetation for different areas with different of physic-geographical and ecological conditions of territories at all. These communities can be the regional models for indication of the present processes, the past and future changes in the structure of the vegetation in different ecological conditions. It's shown that ecotones and plant communities, reflection the paragenese (object) in the vegetation structure are indication of the structural and dynamic features of the vegetation cover organization at all. There has the classification value and characterized the between zonal, between altitudinal zonality and interzonal differences of the vegetation community's structure of the big regions. The ecotones and paragenese in vegetation structure at the research region is reflection of the physical-geographical conditions of the plant communities formation for the concrete period of time.