Soils of the forest-tundra ecotone in the Khoseda-Yu River basin of the Bol’shezemel’skaya tundra

A detailed characterization of soils in the upper reaches of the Khoseda-Yu River (the Bol’shezemel’skaya tundra in the northeast of European Russia) is given. The classification position of these soils is considered. The specificity of soil formation under tundra communities and under forest groves within the tundra zone is examined. The polygenetic nature of the studied soils is shown; it is explained by the repeated shifts of zonal boundaries within the forest-tundra ecotone.