HYDROCARBON STATUS OF SOILS IN LANDSCAPES: GENESIS AND TYPIFICATION
Abstract
Authors generalized and systematized original data on the hydrocarbon status (HCS) of soils in natural and technogenic landscapes within eleven key sites of the territory of Russia. The components and characteristics of HCS of soils are the following: a) the total content and qualitative composition of bitumoids (substances extracted from soils by neutral organic solvents); b) composition and concentration of individual hydrocarbon compounds – polycyclic aromatic hydrocarbons, liquid and solid alkanes; c) the amount and individual composition of free and retained soil hydrocarbon gases. It is shown that different types of HCS of soils are determined by their connection with different groups of natural and technogenic processes: generation of hydrocarbons (HC) in soils by microorganisms; accumulation of hydrocarbons from the lithosphere gas flows; HC input from oil and oil-products spills; accumulation of natural and/or technogenic HC on soil surface from the atmosphere; inheritance of parent rock hydrocarbons by soils. Accordingly, the following main genetic types of HCS of soils were considered: biogeochemical, emanation, injection, atmo-sedimentation and lithogenic. It is shown that different variants of combinations of the above types are the most typical in real situations, which is due to the multiplicity of factors acting simultaneously on soils, and one of the tasks of the study was the identification of such variants in the process of the analysis of HCS of soils.
About the Authors
A. N. Gennadiev
Lomonosov Moscow State University
Russian Federation
Faculty of Geography, Department of Landscape Geochemistry and Soil Geography, Professor, D.Sc. in Geography
Russian Federation
Faculty of Geography, Department of Landscape Geochemistry and Soil Geography, Professor, D.Sc. in Geography
Yu. I. Pikovskiy
Lomonosov Moscow State University
Russian Federation
Faculty of Geography, Department of Landscape Geochemistry and Soil Geography, Leading Scientific Researcher, D.Sc. in Geography
Russian Federation
Faculty of Geography, Department of Landscape Geochemistry and Soil Geography, Leading Scientific Researcher, D.Sc. in Geography
M. A. Smirnova
Lomonosov Moscow State University
Russian Federation
Faculty of Geography, Department of Landscape Geochemistry and Soil Geography, Scientific Researcher, PhD. in Geography
Russian Federation
Faculty of Geography, Department of Landscape Geochemistry and Soil Geography, Scientific Researcher, PhD. in Geography
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Review
For citations:
Gennadiev A.N., Pikovskiy Yu.I., Smirnova M.A. HYDROCARBON STATUS OF SOILS IN LANDSCAPES: GENESIS AND TYPIFICATION. Vestnik Moskovskogo universiteta. Seriya 5, Geografiya. 2018;(6):3-9. (In Russ.)
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