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黄土坡面细沟发育形态对 侵蚀特征的影响
盛贺伟1; 孙莉英2; 蔡强国2
Source Publication应用基础与工程科学学报

细沟侵蚀规律的解译对于坡面治理具有重要的理论与实践意义. 通过 10m
坡长条件下 10°和 25°坡面人工模拟降雨试验与高清摄像技术,研究了细沟侵蚀
的时空动态变化特征. 结果表明 10°坡面单位坡长总侵蚀量和细沟侵蚀量均随
距坡顶距离的增加先增大后减小,而 25°坡面却呈现不断增加的趋势,但其增加
速率逐渐减小. 10°坡面平均含沙量随降雨历时先减少后增加,而 25°坡面却先
增加后减少. 高清摄像技术可表征降雨过程中细沟平面形态变化,25°坡面平均
细沟宽度始终小于 10°坡面,但二者均随降雨历时先减小后增加,细沟侵蚀方式

Other Abstract

The interpretation ofrill erosion formation mechanism provides scientific basis for soil and
water conservation measures on loess slope. Temporal and spatial variations of rills were studied
using high definition (HD) camera technology under simulated rainfall experiments on the 10°
and 25° loess slopes with 10m slope length. The results show that both the total soil loss amount
and rill erosion amount per unit length firstly increase and then decrease with distance from the
top of the 10° slope. These two variables present an increasing trend with distance from the top
of the 25° slope,but the increasing rate decreases gradually. The average sediment concentration
firstly decreases and then increases with the rainfall duration on the 10° slope,while it firstly
increases and then decreases on the 25° slope. HD camera technology can be used to monitor
the temporal variations in rill morphology. The average rill width on the 10° slope is consistently
being larger than that on the 25°slope for the rainfall experiment,but these two values firstly
decrease and then increase with the rainfall duration,which indicates that the rill erosion
patterns transit from headward erosion to bank landslip during the rainfall.

Keyword细沟侵蚀 时空变化 细沟形态 黄土坡面 模拟降雨
Indexed By中文核心期刊要目总览
Document Type期刊论文
Affiliation1.中科院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西 杨凌 712100
2.中国科 学院地理科学与资源研究所陆地水循环与地表过程重点实验室,北京 100101
Recommended Citation
GB/T 7714
盛贺伟,孙莉英,蔡强国. 黄土坡面细沟发育形态对 侵蚀特征的影响[J]. 应用基础与工程科学学报,2017,25(4):679-10.
APA 盛贺伟,孙莉英,&蔡强国.(2017).黄土坡面细沟发育形态对 侵蚀特征的影响.应用基础与工程科学学报,25(4),679-10.
MLA 盛贺伟,et al."黄土坡面细沟发育形态对 侵蚀特征的影响".应用基础与工程科学学报 25.4(2017):679-10.
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