Abstract
The results of a long-term comprehensive study of ecological and biological features of urban flora of various habitats of the cities of the Orel (Oryol) oblast: Orel, Mtsensk, Livny, Bolkhov, Maloarkhangelsk, Novosil, and Dmitrovsk are presented in the article. Flora of the city Orel has a population of 913 species, Livny – 786, Mtsensk – 777, Bolkhov – 780, Novosil – 775, Maloarhangelsk – 776, and the Dmitrovsk – 777 species. In the course of research, the taxonomic structure of urban flora is characterized as one of the indicators of floras zonal and ecological-topological confinement. Comparison of complete floristic lists of Orel oblast cities revealed high floristic similarity, which indicates a significant concordance of urban flora and smoothing of zonal distinctions. We also determined large degree of similarity between aboriginal and adventive fraction of flora in various cities. The high correlation between the systematic structure of the dominant families in different habitats is associated with the conformity of regional flora and indicates the close interaction of natural and urban flora.
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