Effect of Run}n Water and Sediment on Ril 1 Erosion Process at Down-slope Section

XIAO Pei qing; ZHEN Fen li

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Effect of Run}n Water and Sediment on Ril 1 Erosion Process at Down-slope Section

- Effect of Run}n Water and Sediment on Ril 1 Erosion Process at Down-slope Section
- Bulletin of Soiland Water Conservation Vol. 20, Issue 1, Pages: 23-25(2001)
- 作者机构：
  
  中国科学院水利部水土保持研究所陕西杨凌,712100
- 作者简介：
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- DOI：
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- Published：2001
- 稿件说明：
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XIAO Pei qing, ZHEN Fen li. Effect of Run}n Water and Sediment on Ril 1 Erosion Process at Down-slope Section[J]. Bulletin of Soiland Water Conservation, 2001, 20(1): 23-25.
DOI：

XIAO Pei qing, ZHEN Fen li. Effect of Run}n Water and Sediment on Ril 1 Erosion Process at Down-slope Section[J]. Bulletin of Soiland Water Conservation, 2001, 20(1): 23-25. DOI：

摘要

利用双土槽系统径流小区 (供沙土槽和试验土槽 )

定量研究了不同上方来水含沙量和不同降雨强度下 15

坡面上方来水来沙对坡下方细沟侵蚀产沙过程的影响。结果表明

坡上方来沙量不但被径流全部搬运

且坡上方来水在坡下方细沟侵蚀槽引起另外的侵蚀产沙量 S。坡面细沟侵蚀过程以侵蚀—搬运过程为主。上方来水对细沟侵蚀产沙的贡献受上方来水含沙量和降雨强度的影响。降雨强度的增加或上方来水含沙量的减少

使 S值的增加更为显著.

Abstract

A dual-box system(one is rill box and the other isf der box) with 15 gradient and clay loss is used to quantify effects of runoff and sediment from up-slope on down-slope rill erosion and sedunent under different sediment concentrations and rainfall intensities.The experiment results show

d that the sedunent from up}lope was completely transport

runoff from up-slope caused the additional sedunent deliv-ery at down}lope rill erosion channel. Sedunent regune in rill erosion process was always detachment一transport.The additional sediment delivery caused by up}lope runoff increased with a decrease of sediment concentration in up-silope runoff or an in- crease of rainfall intensity.

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references

陈浩.降雨特征和上坡来水对产沙的综合影响[J].水土保持学报，1992,6(2):17-23.

郑粉莉，康绍忠.黄土坡而不同侵蚀带侵蚀产沙关系及其机[J]，地理学报，1998,53(5):422-428.

Huang C,Well L K, Norton L D. Sc}limenL transport capaciLv and erosion processes: concept and reality[J].Earth Surface Procxesses Landforms. 1999, 24: 503一516.

Fen-li, Zheng, Chi-hua Huang, Norton L D. VerLical hydraulic gradient and run-onn water and sexlimenL effects on erosion processes and sediment regimes[J].Soil Sci.Soc. Am. J. 2000, 64(1):4一10.

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郑粉莉，高学田.黄土坡而土壤侵蚀过程与模拟[M].西安:陕西人民出版社,2000: 95-104.

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