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[1]GUO Lingmei,WANG Keqin,SU Bei,et al.Rill Erosion in Slope Farmland in Jianshan River Small Watershed[J].Research of Soil and Water Conservation,2015,22(02):12-16.

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Rill Erosion in Slope Farmland in Jianshan River Small Watershed

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 02 Page number: 12-16 Column: Public date: 2015-04-28

Title:: Rill Erosion in Slope Farmland in Jianshan River Small Watershed

Author(s):: GUO Lingmei, WANG Keqin, SU Bei, JIANG Wei, MI Tao; Faculty of Environmental Science and Engineering, Southwest Forestry University, Kunming, Yunnan 650224, China

Keywords:: Jianshan River small watershed; slope farmland; rainfall; rill erosion

CLC:: S157.1

DOI:: -

Abstract:: The research for rill erosion in slope land has the very vital significance to clarify the slope soil erosion, to promote farmland soil and water conservation. The analysis on location observation and field investigation data was carried out to study the development of rill erosion process on the slope in Jianshan River small watershed. The results showed that after the generation of rill in slope farmland, the slope rill erosion lengthened along the slope, rill density increased gradually, the rill became wide and deep, and rill erosion was also increasing under the erosive rainfall. With the accelerating development of rill, rill depth increased. After developing to the depth of the plough, the rill was stable basically. According to statistics, rill erosion depth was generally less than 30 centimeters, its width can be up to 35 cm, and most of the rill depths were less than 15 cm, width was less than 20 cm. Soil losses produced by rill erosion could reach more than 8 700 t/km².

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