Volume 25 Issue 5
Oct.  2008
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SUN Da, ZHANG Miao-xian, HAN Jin, HUANG Fang. Sediment and yield runoff with simulated rainfall on a barren slope[J]. Journal of Zhejiang A&F University, 2008, 25(5): 635-638.
Citation: SUN Da, ZHANG Miao-xian, HAN Jin, HUANG Fang. Sediment and yield runoff with simulated rainfall on a barren slope[J]. Journal of Zhejiang A&F University, 2008, 25(5): 635-638.

Sediment and yield runoff with simulated rainfall on a barren slope

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  • Corresponding author: SUN Da
  • Publish Date: 2008-10-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Sediment and yield runoff with simulated rainfall on a barren slope

    Corresponding author: SUN Da

Abstract: To assess sediment and yield runoff on a barren slope in the Qingshan Catchment of Lin’an City,Zhejiang Province,a field ,simulated rainfall experiment was carried out using five rainfall intensities(1.66,1.57,1.51,0.97,0.65 mm·min -1). Results showed that with an increase of rainfall intensity and a decrease in runoff time,runoff,ratio of sediment yield and sediment yield increased. When rainfall intensity was 1.66 mm·min -1,the runoff time was 47 seconds,and after 30 minutes,runoff reached 0.898 m3 with a soil erosion modulus of 30 t·km -2. As a logarithmic function,rainfall intensity was negatively correlated with runoff time(r = - 0.965 5,P<0.01),while it increased with the exponential of the runoff correlation(r = 0.921 8,P<0.01)and soil erosion modulus(r = 0.963 5,P<0.01). Also,with runoff as a power function,the correlation was r = 0.873 6(P<0.01). [Ch,3 fig. 1 tab. 11 ref.]

SUN Da, ZHANG Miao-xian, HAN Jin, HUANG Fang. Sediment and yield runoff with simulated rainfall on a barren slope[J]. Journal of Zhejiang A&F University, 2008, 25(5): 635-638.
Citation: SUN Da, ZHANG Miao-xian, HAN Jin, HUANG Fang. Sediment and yield runoff with simulated rainfall on a barren slope[J]. Journal of Zhejiang A&F University, 2008, 25(5): 635-638.

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