1. Soil Formation Features in Drained Lake Basins of the Bol'shezemel'skaya Tundra.
- Author
-
Kaverin, D. A., Deneva, S. V., Pastukhov, A. V., and Yakubenko, S. V.
- Subjects
- *
WATERSHEDS , *SOIL formation , *PEAT soils , *TUNDRAS , *SOIL temperature , *SOILS - Abstract
Specific features of the morphology, properties, and temperature regimes of soils functioning in two different drained lake basins of the Bol'shezemel'skaya tundra are characterized. The basins differ significantly in the features of landscape evolution, the composition of bottom (soil-forming) sediments, and the patterns of the soil and plant covers. Soils in the naturally drained basin with mineral (sandy and clayey) bottom sediments are assigned to the orders of gley, and weakly developed soils that are also typical of watershed landscapes in the studied region. These are ecosystem-modified permafrost-affected soils that are partially protected from thawing. They have an acid reaction, low base saturation, and moderate carbon content in the mineral horizons. In the artificially drained basin with a silty peat layer of bottom sediments, peat permafrost-affected soils, including specific peat soils under tundra meadows, are developed. Permafrost peat soils of the former lake bottom are ecosystem-protected from thawing and are characterized by the high ash content and slightly acid reaction. The studied soil parameters are significantly differentiated with respect to lake basins, which is determined by the composition of parent materials, specific features of landscape development, and activity of modern cryogenic processes. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF