干旱区生态环境知识资源中心(Arid): Role of rock dip angle in runoff and soil erosion processes on dip/anti-dip slopes in a karst trough valley

Arid

DOI	10.1016/j.jhydrol.2020.125093
	Role of rock dip angle in runoff and soil erosion processes on dip/anti-dip slopes in a karst trough valley
	Gan, Fengling; He, Binghui; Qin, Ziyang; Li, Wubing
通讯作者	He, BH
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2020
卷号	588
英文摘要	Due to the great difficulty of monitoring surface and underground runoff and sediment yield directly, the surface and underground hydrological processes associated with soil leakage loss in karst trough valleys remain unknown. The objective of this study was to analyse the role of the rock dip angle in the water and soil leakage loss processes, to assess the characteristics of surface and underground runoff and soil erosion and to investigate their conversion relationships using rainfall experiments. The results showed the following. i) At a steep rock dip angle (60 degrees), the underground runoff yield had a shorter stabilization time than the surface runoff yield and that the underground runoff coefficient of the dip slope exceeded 0.5. ii) The surface sediment yield could be divided into the suspended load and the bed load and the underground sediment yield included only the suspended load. On the anti-dip slope, the surface erosion modulus was 0.83-2.50 times the underground erosion modulus. iii) The surface and underground cumulative runoff was linearly correlated with the cumulative sediment yield. The rock dip angle had a significant quadratic relationship with the surface and underground runoff and sediment yield. These results improve the understanding of the surface-underground runoff and soil erosion processes and have significance for preventing water and soil leakage loss on the slopes of karst trough valleys.
英文关键词	Karst trough valley Runoff Soil erosion process Rock dip angle Sediment transport mechanism
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000568826300067
WOS关键词	NORTHWEST GUANGXI ; BARE SLOPES ; SURFACE ; DESERTIFICATION ; HILLSLOPES ; DRIVEN ; REGION ; RATES ; FLOW
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326250
作者单位	[Gan, Fengling; He, Binghui; Qin, Ziyang] Southwest Univ, Coll Resources & Environm, Key Lab Ecoenvironm Three Gorges Reg, Minist Educ, Chongqing, Peoples R China; [Li, Wubing] Yangtze Normal Univ, Res Ctr Environm Monitoring & Hazard Prevent Thre, Chongqing, Peoples R China
推荐引用方式 GB/T 7714	Gan, Fengling,He, Binghui,Qin, Ziyang,et al. Role of rock dip angle in runoff and soil erosion processes on dip/anti-dip slopes in a karst trough valley[J],2020,588.
APA	Gan, Fengling,He, Binghui,Qin, Ziyang,&Li, Wubing.(2020).Role of rock dip angle in runoff and soil erosion processes on dip/anti-dip slopes in a karst trough valley.JOURNAL OF HYDROLOGY,588.
MLA	Gan, Fengling,et al."Role of rock dip angle in runoff and soil erosion processes on dip/anti-dip slopes in a karst trough valley".JOURNAL OF HYDROLOGY 588(2020).