干旱区生态环境知识资源中心(Arid): Subsurface flow aggravates the soil erosion on steep slopes in karst post-mining areas

Arid

DOI	10.1016/j.ejrh.2024.101667
	Subsurface flow aggravates the soil erosion on steep slopes in karst post-mining areas
	Ao, Liman; Wu, Yaoqin; Xu, Qinxue; Huang, Guangling; Zheng, Jinde; Dai, Junfeng; Fu, Zhiyong; Chen, Hongsong
通讯作者	Xu, QX
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
EISSN	2214-5818
出版年	2024
卷号	51
英文摘要	On karst steep slopes, subsurface flow frequently emerges at the rock-soil interface, thereby exacerbating soil erosion. However, there have been few studies that quantitatively assess the impact of subsurface flow on soil erosion in this region. We conducted indoor artificial rainfall experiments to observe runoff and sediment yield under two conditions: with subsurface flow (SF) and without subsurface flow input (WSF). We considered various rainfall intensities (30 mm h-1, 60 mm h-1, 90 mm h-1) and slope gradients (30 degrees, 35 degrees, 40 degrees). The results demonstrated that the presence of subsurface flow significantly amplified both surface runoff and sediment yield, while also intensifying the influence of rainfall intensity and slope gradient on runoff and sediment yield. Compared to WSF, under SF conditions, surface runoff increased by 1.55 to 4.43 times, and sediment yield increased by 4.60 to 8.72 times. Slope gradient played a substantial role in soil loss, while rainfall intensity primarily impacted surface runoff. Under WSF conditions, soil loss only occurred at a 40 degrees slope gradient or under a rainfall intensity of 90 mm h-1, whereas under SF conditions, soil loss could occur at a 30 degrees slope gradient or under a rainfall intensity of 30 mm h-1. This research provides a scientific foundation for a more profound understanding of the mechanisms driving soil erosion on karst slopes, particularly in the context of subsurface flow.
英文关键词	Karst Subsurface flow Slop gradient Soil erosion Steep slope
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001165135800001
WOS关键词	ROCKY DESERTIFICATION ; HYDRAULIC-GRADIENT ; RAINFALL INTENSITY ; INTERRILL EROSION ; LAND-USE ; WATER ; POSITION ; RUNOFF
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404626
推荐引用方式 GB/T 7714	Ao, Liman,Wu, Yaoqin,Xu, Qinxue,et al. Subsurface flow aggravates the soil erosion on steep slopes in karst post-mining areas[J],2024,51.
APA	Ao, Liman.,Wu, Yaoqin.,Xu, Qinxue.,Huang, Guangling.,Zheng, Jinde.,...&Chen, Hongsong.(2024).Subsurface flow aggravates the soil erosion on steep slopes in karst post-mining areas.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,51.
MLA	Ao, Liman,et al."Subsurface flow aggravates the soil erosion on steep slopes in karst post-mining areas".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 51(2024).