SOIL WASHOUT BY SNOWMELT ON THE SLOPES WITH COMPLEX MICRORELIEF
https://doi.org/10.15356/0435-4281-2016-1-45-54
Abstract
The infl uence of the microrelief of arable land on the intensity of soil erosion, caused by melted snow waters was considered on an example of key area “Luchanovo” (20 km south-east of the Tomsk city), where gray forest soils are involved in arable land cultivation. The study of soil erosion in the period 1988–2013 showed that on the slopes of the arable land having the steepness up to 17° a complex microrelief was formed. It is represented by microbasins of hollows and water galls, depressions on the watersheds where the snowmelt runoff takes place. The value of soil loss from the surface of microbasins even on the one and the same slope depends on its area, steepness, length, snow melting, etc., and varies from 0.5–2 m3/ha to 81 m3/ha, predominantly having the value about 50 m3/ha. During 23 years the thickness of the humus horizon on the fl at interfl uves has decreased by 3–6 cm, humus content – by 1.03%. The annual lost of the humus from the slopes with arable land reaches 0.6–1.7 t/ha leading to degradation of soils.
About the Authors
N. S. EVSEYEVA
Tomsk state university
Russian Federation
Russian Federation
Z. N. KVASNIKOVA
Tomsk state university
Russian Federation
Russian Federation
M. A. KASHIRO
Tomsk state university
Russian Federation
Russian Federation
A. S. BATMANOVA
Tomsk state university
Russian Federation
Russian Federation
V. V. ALYEEV
Tomsk state university
Russian Federation
Russian Federation
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Review
For citations:
EVSEYEVA N.S., KVASNIKOVA Z.N., KASHIRO M.A., BATMANOVA A.S., ALYEEV V.V. SOIL WASHOUT BY SNOWMELT ON THE SLOPES WITH COMPLEX MICRORELIEF. Geomorfologiya. 2016;(1):45-54. (In Russ.) https://doi.org/10.15356/0435-4281-2016-1-45-54
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