Soils of sandy massifs of the Barguzin hollow: diversity and patterns of spatial distribution

In the article soil diversity of the sandy massifs was considered, basic physical and physic-chemical properties of the soils, a brief description of climatic, lithological and geomorphological conditions of formation was given, list of types was compiled. On the basis of the received materials soils were classified and divided into 21 type, which is included in the 10 divisions of the 3 trunks of soil formation. The main soil-forming processes on sandy areas are accumulation of light and grey humus, carbonates, fawn metamorphism, stratification. On the sandy massif “Verkhniy Kuytun” there are also processes of salinization and solonetz formation. When considering the patterns of spatial distribution of various soil types, particular attention is paid to manifestations of latitudinal zones and vertical zonation, denu dation and alluvial-sedimentary model of pedogenesis under extracontinental climate conditions.