Ecological peculiarities of forest vegetation distribution at the Ukrainian Rastochye

The article presents the results of studies of ecological peculiarities of distribution of forest vegetation of the Ukrainian Rastochye based on an analysis of the floristic composition of plant communities. The following methods were used: phytoindication of ecological regimes based on ecological scales of F. N. Tsyganov, data mining methods, multidimensional ordination of plant communities based on the Principle Component Analysis, Analysis of Variance, statistical processing of ecological parameters of forest vegetation ecotopes. The results of a phytoindicative assessment of the conditions of forest phytocoenosis habitats are presented, which representing 22 associations of the classes Vaccinio-Piceetea, Oxycocco-Sphagnetea, Alnetea glutinosae and Querco-Fagetea, in nine parameters: Tm – thermal regime, Kn – continentality of climate, Om – climate humidity, Cr – cryo-climate, Hd – soil humidity, Tr – salt content, Rc – soil acidity, Nt – mineral nitrogen content, Lc – light-shading mode in plant community. The main regularity of the formation of ecotopes of forest vegetation of Ukrainian Rastochye consists in such a structure of interconnections between environmental parameters. The phytocenological space of the forest vegetation of Ukrainian Rastochye can be simplified in the form of an octagon, in the corners of which the associations are 8 located. Multidimensional ordination of forest vegetation of the Ukrainian Rastochye is characterized by the location of rare phytocenoses on the periphery of the ecological and phytocenological space. Practical significance. Patterns of the formation of forest vegetation allow solved the dynamics of vegetation cover, the relationships between different types of vegetation and environmental forecasting