Runoff and Sediment Yield Characteristics on Slopes in Ziquejie Terrace Area Under Simulated Rainfall

ZHANG Guan-hua; CHENG Dong-bing; ZHANG Ping-cang; XU Wen-sheng; SHEN Sheng-yu; ZHANG Chang-wei; XU Wen-yu

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Runoff and Sediment Yield Characteristics on Slopes in Ziquejie Terrace Area Under Simulated Rainfall

- Runoff and Sediment Yield Characteristics on Slopes in Ziquejie Terrace Area Under Simulated Rainfall
- Bulletin of Soiland Water Conservation Vol. 32, Issue 6, Pages: 9-12(2013)
- 作者机构：
  
  长江科学院水土保持研究所,湖北,武汉,430010
- 作者简介：
- 基金信息：
- DOI：
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- Published：2013
- 稿件说明：
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ZHANG Guan-hua, CHENG Dong-bing, ZHANG Ping-cang, et al. Runoff and Sediment Yield Characteristics on Slopes in Ziquejie Terrace Area Under Simulated Rainfall[J]. Bulletin of Soiland Water Conservation, 2013, 32(6): 9-12.
DOI：

ZHANG Guan-hua, CHENG Dong-bing, ZHANG Ping-cang, et al. Runoff and Sediment Yield Characteristics on Slopes in Ziquejie Terrace Area Under Simulated Rainfall[J]. Bulletin of Soiland Water Conservation, 2013, 32(6): 9-12. DOI：

摘要

通过野外模拟降雨试验

研究了紫鹊界梯田区红薯地与裸地土壤入渗及坡面产流产沙特征。结果表明

与裸地坡面相比

红薯地坡面由于覆盖度高

土壤疏松

其土壤入渗率比裸地高。在小雨强(0.65mm/min)条件下无径流产生

中(1.15mm/min)、高(1.65mm/min)雨强下坡面产流产沙速率以及径流系数均有很大程度的降低

表现出较强的减流减沙效益

但径流含沙量分别为裸地的1.3和2.8倍试验条件下的坡面产流产沙和土壤入渗过程均符合幂函数关系

产流率与产沙率之间呈线性关系。

Abstract

Simulated field rainfall experiments were conducted to study the runoff and sediment production as well as soil infiltration characteristics on sweet potato and bare lands in Ziquejie terrace area.The results showed that compared to the two bare lands

sweet potato land had a much higher infiltration rate due to its high coverage and loose soil.No runoff was generated on sweet potato land during the low rainfall intensity of 0.65 mm/min

and the runoff

sediment rate and runoff coefficient reduced substantially in comparison to bare lands during medium(1.15 mm/miW and high(1.65 mm/miW rainfall intensities

showing a strong runoff and sediment reduction effect.However

it had a relatively higher sediment concentration with the value being 1.3 and 2.8 times of bare lands

respectively.In the current study

runoff

sediment

and infiltration processes fitted well by power functions.The sediment rate was linearly correlated with runoff rate.

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