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vol. 5, nr. 2 (2005)
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The effects of heavy rains in loessic catchment with small retention reservoirs
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Magdalena Patro
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Department of Melioration and Agricultural Building, University of Agriculture, ul. Leszczynskiego 7, 20-069 Lublin |
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vol. 5 (2005), nr. 2,
pp. 377-385
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abstract:
Rainfalls, topographic features and the way of basin management are the main factors that affect the amount of soil washed out. The studies were aimed at an evaluation of the intensity of water erosion after heavy rainfalls as well as assessment of the anti-erosion action of water reservoirs in a loess basin in Olszanka on the Lublin Upland in 2001-2003. Four microbasins of retention reservoirs with orchard and cultivation use were selected for the study. There were heavy rainfalls (about 0.4 mm min-1 of intensity) on May 26th, 2002, and July 24th, 2003, after which erosion damage was estimated on the basis of recording the erosion forms and the amount of soil material deposited in reservoirs. Analysis of soil displaced within the basin of reservoirs confirmed the influence of land use on the course of water erosion processes. Great importance of retention reservoirs in blocking the eroded soil material was found.
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keywords:
water erosion, surface runoff, heavy rain, soil wash
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original in:
Polish
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