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CAI Qiang-guo, ZHU Yuan-da, WANG Shi-ying. Research on processes and factors of rill erosion[J]. Advances in Water Science, 2004, 15(1): 12-18.
Citation: CAI Qiang-guo, ZHU Yuan-da, WANG Shi-ying. Research on processes and factors of rill erosion[J]. Advances in Water Science, 2004, 15(1): 12-18.

Research on processes and factors of rill erosion

Funds:  The project is supported by National Natural Science Foundation of China (No.40271075).
  • Received Date: 2002-10-14
  • Rev Recd Date: 2003-01-10
  • Publish Date: 2004-01-25
  • The erosion processes of 10 kinds of soil were studied with the experimental erosion slots and 2 artificial rainfalls with an interval of 11 hours.As a result,rill erosion has been observed in most soils during the second event of rainfall.The observations about runoff and sediment suggest that sediment concentration and runoff rate of all the soils with rill erosion decrease in the first rainfall,and increase then decrease in the second rainfall.The results of physical and chemical analysis and the multi-factor regression show that soil texture,content of soil organic matter,ferrous and aluminous compounds have an unnoticeable effect on rill erosion,while indexes of soil structure concerning soil aggregates have a close correlation with the rill erosion,the velocity and grosses of runoff and sediment.The degree of aggregate despersibility and the ratio of collapsing rate to infiltration rate work well in predicting possibility of rill erosion and the sediment discharge as well.
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    [2] Bryan R B.Processes and significance of rill development[J].Catena Sup,1987,8:1-15.
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    [4] Foster G R.Modelling the erosion processes[A].In:Hydrologic Modelling of small watershed[C].eds Huan,Jannson & Brakensick.AEAS monograph No.5,ASAE,St Joseph,MI,1982.45-57.
    [5] 蔡强国,陈浩.影响降雨击溅侵蚀过程的多元正交试验研究[J].地理研究,1989,8(4):28-36.
    [6] 唐政洪,蔡强国,许峰,等.不同尺度条件下的土壤侵蚀试验监测及模型研究[J].水科学进展,2002,13(6):781-787.
    [7] 唐克丽,郑世清.杏子河流域坡耕地的水土流失及其防治[J].水土保持通报,1984,4:5-8.
    [8] 郑粉莉,高学田.黄土坡面土壤侵蚀过程与模拟[M].西安:陕西人民出版社,2000.4-85.
    [9] 蔡强国,王贵平,陈永宗.黄土高原小流域侵蚀产沙过程与模拟[M].北京:科学出版社,1998.58-78.
    [10] Luk S H,Cai Q G.Laboratory experiments on crust development and rain splash erosion of loess soil,China[J].Catena,1990,17:261-276.
    [11] Nearing M A,Bradford J M.Relation between waterdrop properties and force of impact[J].Soil Sci Soc Am J,1985,49:425-430.
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    [13] 郑粉莉.黄土坡耕地细沟间侵蚀与细沟侵蚀的研究[J].土壤学报,1998,35(1):95-103.
    [14] Cai Q G,Wang G P.Rill initiation and erosion on hillslopes in the Loess Plateau region,Western Shanxi Province[J].International Journal of Sediment Research,1993,8(3):21-32.
    [15] 中国科学院南京土壤研究所土壤物理研究室编.土壤物理性质测定法[M].北京:科学出版社,1978.1-143.
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Research on processes and factors of rill erosion

Funds:  The project is supported by National Natural Science Foundation of China (No.40271075).

Abstract: The erosion processes of 10 kinds of soil were studied with the experimental erosion slots and 2 artificial rainfalls with an interval of 11 hours.As a result,rill erosion has been observed in most soils during the second event of rainfall.The observations about runoff and sediment suggest that sediment concentration and runoff rate of all the soils with rill erosion decrease in the first rainfall,and increase then decrease in the second rainfall.The results of physical and chemical analysis and the multi-factor regression show that soil texture,content of soil organic matter,ferrous and aluminous compounds have an unnoticeable effect on rill erosion,while indexes of soil structure concerning soil aggregates have a close correlation with the rill erosion,the velocity and grosses of runoff and sediment.The degree of aggregate despersibility and the ratio of collapsing rate to infiltration rate work well in predicting possibility of rill erosion and the sediment discharge as well.

CAI Qiang-guo, ZHU Yuan-da, WANG Shi-ying. Research on processes and factors of rill erosion[J]. Advances in Water Science, 2004, 15(1): 12-18.
Citation: CAI Qiang-guo, ZHU Yuan-da, WANG Shi-ying. Research on processes and factors of rill erosion[J]. Advances in Water Science, 2004, 15(1): 12-18.
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