Sediment and yield runoff with simulated rainfall on a barren slope

SUN Da; ZHANG Miao-xian; HAN Jin; HUANG Fang

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

1.
School of Environmental Sciences and Technology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China

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Corresponding author: SUN Da
Publish Date: 2008-10-20

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.］
- water and soil conservation,
- simulated rainfall,
- barren field slope,
- runoff,
- soil erosion

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通讯作者: 陈斌, bchen63@163.com

1.
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

1. School of Environmental Sciences and Technology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China

Corresponding author: SUN Da

Publish Date: 2008-10-20

Key words:

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.］

Sediment and yield runoff with simulated rainfall on a barren slope

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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