Agrogenic degradation of soils in Krasnoyarsk forest-steppe

Agrogenic degradation of soils in Krasnoyarsk forest-steppe was investigated. Paleocryogenic microtopography of microlows and microhighs in this area predetermined the formation of paragenetic soil series and variegated soil cover. Specific paleogeographic conditions, thin humus horizons and soil pr...

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Bibliographic Details
Published in:Eurasian soil science 2017-10, Vol.50 (10), p.1209-1216
Main Authors: Shpedt, A. A., Trubnikov, Yu. N., Zharinova, N. Yu
Format: Article
Language:English
Subjects:
Agricultural land
Agronomy
Biodegradation
Clay
Clay loam
Conservation of Soils
Conservation practices
Decomposing organic matter
Degradation
Earth and Environmental Science
Earth Sciences
Environmental degradation
Environmental protection
Erosion
Exhaustion
Forests
Geotechnical Engineering & Applied Earth Sciences
Humus
Land conservation
Land use
Loam
Microtopography
Norms
Organic matter
Pleistocene
Profiles
Rehabilitation
Soil
Soil conditions
Soil conservation
Soil degradation
Soil erosion
Soil formation
Soil horizons
Soil investigations
Soil mechanics
Soil profiles
Soil properties
Soil water
Soils
Steppes
Tillage
Water erosion
Wind erosion
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Summary:Agrogenic degradation of soils in Krasnoyarsk forest-steppe was investigated. Paleocryogenic microtopography of microlows and microhighs in this area predetermined the formation of paragenetic soil series and variegated soil cover. Specific paleogeographic conditions, thin humus horizons and soil profiles, and long-term agricultural use of the land resulted in the formation of soils unstable to degradation processes and subjected to active wind and water erosion. Intensive mechanical soil disturbances during tillage and long-term incorporation of the underlying Late Pleistocene (Sartan) calcareous silty and clay loams into the upper soil horizons during tillage adversely affected the soil properties. We determined the contents of total and labile humus and easily decomposable organic matter and evaluated the degree of soil exhaustion. It was concluded that in the case of ignorance of the norms of land use and soil conservation practices, intense soil degradation would continue leading to complete destruction of the soil cover within large areas.
ISSN:1064-2293
1556-195X
DOI:10.1134/S106422931710012X