LANDSCAPE-GEOCHEMICAL STUDIES IN THE SELENGA RIVER BASIN
Abstract
The landscape-geochemical map, scale 1:1,5M, was compiled to facilitate the integrated assessment of natural and technogenic fluxes of matter within the catchment area of theSelengaRiverwith its main tributaries, and to forecast the possibility to be discharged into these rivers. The following major approaches to characterize the geochemical landscapes were applied: biological cycling, production of biomes, water migration classes. Contrasts in relief and moisture patterns differentiate conditions of substances and chemical elements translocation: removal from landscapes of highlands, predominance of transit in midlands, prevailing accumulation in intermontane depressions and in river valleys and deltas, where accumulation is associated with transit phenomena. Bearing this in mind, a purposeful interpretation was performed for the main landscape components (relief, rocks and sediments, climate, permafrost, vegetation, soils) revealing their contributions to geochemical migrations. The biogenic migration is represented in a traditional way (zones, biological cycling, production); for water migration the emphasis is put on its climatic restrictions (duration of active period, freezing and permafrost). Diverse manifestations of mechanical migration are implemented in migrational structures of different hierarchical levels.
Keywords
About the Authors
M. D. BogdanovaRussian Federation
Faculty of Geography Department of Landscape Geochemistry and Soil Geography,
Senior Research Scientist, PhD in Geography
M. I. Gerasimova
Russian Federation
Faculty of Geography, Department of Landscape Geochemistry and Soil Geography,
Professor, D.Sc. in Biology
I. A. Gorbunova
Russian Federation
Faculty of Geography, Department of Landscape Geochemistry and Soil Geography,
Associate Professor, PhD in Geography
N. V. Ryabova
Russian Federation
Faculty of Geography, Department of Geography of World Economy,
Engineer
M. Yu. Lychagin
Russian Federation
Faculty of Geography, Department of Landscape Geochemistry and Soil Geography,
Associate Professor, PhD in Geography
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Review
For citations:
Bogdanova M.D., Gerasimova M.I., Gorbunova I.A., Ryabova N.V., Lychagin M.Yu. LANDSCAPE-GEOCHEMICAL STUDIES IN THE SELENGA RIVER BASIN. Vestnik Moskovskogo universiteta. Seriya 5, Geografiya. 2016;(3):82-89. (In Russ.)