Soils of karst sinkholes in the southeast of the Belomorsk-Kuloi Plateau
Tóm tắt
A series of soil-geochemical microcatenas on the slopes of karst sinkholes in the southeast of the Belomorsk-Kuloi Plateau have been studied. Several types of karst sinkholes have been specified according to the character of surface deposits overlying karstic rocks. The morphological characteristics of the soils of these microcatenas and their chemical and physicochemical properties have been analyzed. On the slopes of the sinkholes, various variants of iron-illuvial podzols and texturally differentiated soils with superimposed profiles of podzols in their upper coarse-textured parts are developed. It is shown that the combinations of the particular factors of soil formation in karst landscapes can both reduce and enhance the vertical differentiation of the soil profiles forming in the sinkholes of different types, which is manifested in the properties of these soils and in the specific of their catenary variations by the elements of the karst topography.
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