Key words: ruderal vegetation, indicator, engineering-geological processes, phytocoenotic structure

Results of studying of sinantrophic vegetation as indicator of engineering-geological processes are considered in the article. Ecological-floristic classification is applied to indicate the Braun-Blanquet approach. Syntaxons units of this classification well reflect conditions of a habitat and ecology of communities, have high information loading. On the basis of researches in the urbanized landscapes (Gomel, Retchitsa and others) the phytocoenotic structure of ruderal vegetation of the basic types of anthropogenic ecotops has been found out.

It has been established, that engineering-geological processes are reflected in phytocoenotic structure of vegetative cover of a city territory. Connection between prevalence of various associations and classes of conditions of the geological environment determining a degree of display of this or that engineering- geological process has been established.

The work presents analysis of eroded resistance soils as factor of ecological hazard. The method of estimation of deflationary hazard in anthropogenous landscapes is considered. The effective indicator of risk of a deflation is ruderal vegetation. The plant communities diagnosing sites, the subject deflation are revealed.