Vlasenko A. Rare exotic dendrosozoflora ex situ of Steppe of Ukraine (structure, representativeness of cultivation, phytocoenodesign)

The thesis is devoted to revealing the quantitative and qualitative composition of rare exotic dendrosozoflora ex situ of Ukrainian Steppe to get the characteristics of their cultivation, presentation, enrichment and use in landscape phytodesign. The thesis for the first time marks stages of the formation of artificial protected parks network and clarifies the nature of their confinement to physical and geographical areas of the Steppe of Ukraine; the quantitative and qualitative composition of rare arboreal plant species, including age-old plants, which are protected by international "red lists"; comprehensive structural analysis of the protected exotic dendroflora is done; correlations between local fractions of reserved exotic dendrosozofloras is identified; the current state of cultivation representativeness of protected species of exotic dendrosozoflora; the assessment of decorativeness of rare arboreal plant species is done; refined and implemented an integrated method of decorativeness assessment of rare arboreal ornamental plant species; practical recommendations to supplement the collections of institutions of Nature Reserve Fund with rare exotic arboreal plants and their use in landscape phytocoenodesign are developed.