The paper provides the results of the comparative analysis of similarity of the model dendrofloras of protected parksmonuments of landscape art of Rivne, Vinnytsia and Zaporizhzhia administrative regions of Ukraine, the natural conditions of which represent three geographical zones - mixed forests, forest-steppe and steppe. The basis for the comparison was the park dendrofloras of Rivne region inventoried by the authors, which includes 127 species of woody plants. The species composition of plants of park dendrofloras of the other two regions has been analyzed by literary sources, from which it is known that the park dendroflora of Zaporizhzhia region has 348 and Vinnytsia region - 487 species of woody plants. As a result of the pairwise comparison of dendrofloras the greatest similarity of species composition of woody plants of parks of Vinnytsia and Zaporizhzhia regions (Ksc = 0.47, Kj = 0.30) has been established, which is a natural phenomenon, since the richness of forest steppe and steppe soils also determines the richness of dendrodiversity. As a result of the comparative analysis of taxonomic structures of all three park regional dendrofloras, the predominance of Magnoliophyta and Rosaceae species has been established. In their biomorphological structure, a subset of mesophanerophytes with a dominance of the first magnitude trees and tall shrubs has a key place. In the ecological structure of these three dendrofloras there are more light-demanding, mesophytyc and frost-resistant plant species. As for the soil nutrient requirements, a share of common species for the pair of park dendrofloras of Rivne and Zaporizhzhia regions dominates. It is explained geographically and edaphically by less optimal conditions for plant growth and development than in the forest-steppe zone. Also, there are more dendroexotic plants in this pair of compared dendrofloras.
Gebreegziabher et al. (Thu,) studied this question.