Abstract
The causal mechanisms of the known geographical phenomenon of insular extratropical Neo-Pacific, i.e., the general descent of the boundaries of altitudinal bioclimatic zones and the southward shift of natural zones on islands compared to the neighboring continents, are discussed. The phenomenal feature of bioclimatic system at the stage of insular landscape formation is the direct subordination of phytobiota to vertical hydrothermal gradients. All the above is conditioned by the domination of transpiration part in thermal balance and ensures the survival of insular ecosystems of the boreal Neo-Pacific under unfavorable conditions of cold oceanicity. It is shown that new types of ecological systems of South Kuril Islands arose in the early Pleistocene, when the cover of the wet taiga forests with ancient (Eopleistocene) well-developed soil had been formed that allows us to consider this period the beginning of the evolutionary processes in the vegetation of these islands.
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More From: Izvestiya Rossiiskoi Akademii Nauk Seriya Geograficheskaya
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