Оценка гидротермических условий экспозиционной лесостепи Внутренней Азии на основе прямых и расчетных параметров

Abstract

Hydrothermic conditions of exposure-related forest-steppe of Inner Asia have been analyzed. The slope-specific vegetation distribution in study region can be explained by topographycontrolled coming solar radiation which led to differentiated soil temperatures and soil water supply. Soil temperature was differ on different aspects and slope inclinations, and also connected with size of forest patches. There was a buffering effect of forests on soil temperature, as indicated by cooler soil temperatures in the warm season and warmer soil temperatures in the cold season. Soils in the forest sites and steppe sites freeze almost simultaneously, but experience a delay in thawing of approximately 14, 19 and 25 days for birch, pine, and larch forest, respectively. Various ecological niches formed by topography and soil conditions characterized by high coenotic diversity of forest-steppe landscapes of Inner Asia.