Soils of mountainous forest-steppe in the southwestern part of Khentei Ridge (Mongolia)
- Authors: Ubugunova V.I.1,2, Baldanov B.T.1, Gunin P.D.3, Bazha S.N.3
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Affiliations:
- Institute of General and Experimental Biology, Siberian Branch
- Buryat State Agricultural Academy
- Severtsov Institute of Ecology and Evolution
- Issue: Vol 50, No 9 (2017)
- Pages: 1010-1017
- Section: Genesis and Geography of Soils
- URL: https://journals.rcsi.science/1064-2293/article/view/224137
- DOI: https://doi.org/10.1134/S1064229317090095
- ID: 224137
Cite item
Abstract
The study of soil cover in the mountainous forest-steppe on the southwestern macroslope of Khentei Ridge has shown that the spatial distribution of soils is controlled by the ruggedness of topography, slope aspects, geocryological conditions, and the thickness of loose deposits. The soils belong to the orders of lithozems and organo-accumulative soils (Mollic Leptosols) of the postlithogenic trunk of pedogenesis. Dark-humus and mucky–dark-humus horizons of the organic matter accumulation are characteristic features of these soils. The investigated area is differentiated according to the soil moistening conditions on the slopes of different aspects. Favorable growth conditions for dwarf birch and Siberian larch at the southern boundary of the boreal forests in Mongolia are explained by the relatively high moistening of mucky–darkhumus lithozems and mucky–dark-humus soils developed on windward northern slopes and on mountain terraces in places of the local snow accumulation by wind. An important role in preservation of forest vegetation belongs to permafrost in small cirque-like depressions.
About the authors
V. I. Ubugunova
Institute of General and Experimental Biology, Siberian Branch; Buryat State Agricultural Academy
Author for correspondence.
Email: ubugunova57@mail.ru
Russian Federation, Ulan-Ude, 670047; Ulan-Ude, 670024
B. Ts. Baldanov
Institute of General and Experimental Biology, Siberian Branch
Email: ubugunova57@mail.ru
Russian Federation, Ulan-Ude, 670047
P. D. Gunin
Severtsov Institute of Ecology and Evolution
Email: ubugunova57@mail.ru
Russian Federation, Moscow, 119071
S. N. Bazha
Severtsov Institute of Ecology and Evolution
Email: ubugunova57@mail.ru
Russian Federation, Moscow, 119071
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