Demutation processes of vegetation cover of the technogenic ecotopes within the Drohobych-Boryslav urbo-industrial complex

The Drohobych Boryslav urban-industrial area formed in the Lviv region as a result of activity of of mining, chemical and petrochemical industries. Man-made types ecotopes, formed during the production of ozokerit, potassium and sodium salts and develop oil pits, which lasts from the middle of the XIX century, occupy large areas within it. This is dumps of ozokerit and oil mining in Borislav and flotation waste storage and industrial sites of Stebnyk potash plant. Special types of man-made ecotypes are so-called mining's fields in the outskirts of cities Borislav and Stebnyk. Accordingly, the vegetation has undergone a radical transformation within these types of man-made ecotypes. Demutation of vegetation in these areas is mainly a spontaneous way. Different stages of primary succession, sometimes caused by time of shutdown of using of the territory, ecological characteristics of ecotopes that are caused by natural and man-made factors and the availability of relevant sources diasporas are characterized. Thus the formation of plant communities with relatively stable structure, differentiation ecological groups of plants according to the types of habitat features, increase species diversity and increasing using value of the areas occur.