Climatic patterns in the vegetation cover’s spatial structure of the Kodar-Kalar orobiome
M. V. Bocharnikov
M. V. Lomonosov Moscow State University, Moscow, Russia
Keywords: климатическая ординация, биоклиматические показатели, ценотическое разнообразие, высотная поясность, оробиом, Северное Забайкалье, climatic ordination, bioclimatic indicators, cenotic diversity, altitudinal zonality, orobiome, the Northern Transbaikalia
Abstract
Bioclimatic substantiation of the vegetation spatial structure of the Kodar-Kalar orobiome on the basis of altitudinal vegetation divisions using the global climate model (BioClim) and data from the meteorological observing stations is carried out. It is shown that the values of mean annual temperature and mean annual rainfall identify vegetation belt and sub-belts of orobiome. For the first time climatic ordination of geographic-genetic vegetation complexes of the Northern Transbaikalia is carried out on the basis of quantitative data - temperature and moisture supply parameters, including derived characteristics (the indicator of potential evapotranspiration, the Mezentsev wetness coefficient). It is proposed the scheme that determines the diversity of vegetation of the Kodar-Kalar orobiome with account of its development in different geographic variants in the integral system of bioclimatic factors, according to which the vegetation complexes are divided according to the gradients of temperature and moisture supply. The analysis of a complex of bioclimatic characteristics made it possible to identify specific regional features in the structure and diversity of the vegetation of the mountain systems of the Northern Transbaikalia at the regional level.
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