Displaying of the latitudinal differentiation of plant cover of the Russian Far North in the structure of local floras
The paper proceeds the series of publications of many years on study and analysis of local floras of the Russian Arctic and Subarctic. Changes of taxonomic and geographic structure of floras along the latitudinal gradient, typology of arctic and subarctic floras, problems of floristic subdivision and delimitation of Arctic and Boreal floristic regions are discussed. Zonal patterns of relationship are distinguished both in latitudinal and geographic structure of floras and in taxonomic structure and even in longitudinal structure. It legitimates, that latitudinal zonality is one of leading environmental factors, which affects the spatial change in plant cover of the Far North.