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The physicochemical properties and the state of the microbial communities of the buried soils of the loess strata of the Khasavyurt plain (Eastern Ciscaucasia, Russia) were studied. The thickness of loess deposits was about 50 m. An exposed surface dark chestnut soil (Kastanozem) had a thickness of about 0.5 m, the next 3-3.5 m were almost pure light yellow loess. Buried soils were observed in the upper part of the loess. Palaeosol 1 at a depth of 5-10 m and a thickness of about 2 m was morphologically similar to ...