The impact of concentrated flow and slope on unpaved loess-road erosion on the Chinese Loess Plateau

doi:10.1007/s11629-019-5869-x

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	The impact of concentrated flow and slope on unpaved loess-road erosion on the Chinese Loess Plateau
	Guo Wenzhao 1,2,4,5; Bai Yun 3; Cui Zhiqiang 1; Wang Wenlong 1,4; Li Jianming 1,2; Su Zhengan 5
刊名	LAND DEGRADATION & DEVELOPMENT
	2020
页码	1333-1344
关键词	Chinese Loess Plateau erosion assessment rill road erosion soil erosion
ISSN号	1085-3278
DOI	10.1007/s11629-019-5869-x
产权排序	2
文献子类	Article;Early Access
英文摘要	Loess-roads (LR) still experience severe soil erosion due to concentrated flow during rainstorms in watersheds on the Chinese Loess Plateau, where soil erosion in sloping farmland, abandoned land, and grassland has been controlled. However, road erosion is commonly overlooked because unpaved roads represent a small part of the catchment area. In situ scouring-erosion experiments were performed on LR surfaces in the Liuaogou watershed on the Loess Plateau. The erosion rate of the LR was 14.1-234.6 g m(-2)min(-1), which is 10.8-57.5-times higher than that on an adjacent grassy hillslope. In most experiments, the LR erosion rate generally increased linearly with increasing concentrated flow and slope gradient (R-2 > .85; significancep < .05). Concentrated flow had a greater impact on road erosion than the road surface slope. Rill erosion occurred in our road plots, with rill area densities of 0.03-0.38 m(2)m(-2). The total amount of road erosion was significantly correlated linearly with the rill area density (R-2= .61,p < .01), indicating that high rill density led to high total erosion on the LR. A road erosion equation based on concentrated flow and slope gradient was established and validated. TheR(2),p, and NSE results were .91, <.01 and 0.93, respectively, implying that the fitted equation can be considered acceptable. Our findings can provide references for the prevention of road erosion and the establishment of road erosion models.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000538038700004
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46853]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Wang Wenlong
作者单位	1.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, PR China; 2.Changjiang River Scientific Resea rch Institute of Changjiang Water Resources Commission, Wuhan, PR China; 3.haanxi Key Laboratory of Ecological Restoration in Shanbei Mining Area, Yulin University, Yulin, PR China 4.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation Northwest A&F University, Yangling, PR China; 5.Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, Chengdu, PR China;
推荐引用方式 GB/T 7714	Guo Wenzhao,Bai Yun,Cui Zhiqiang,et al. The impact of concentrated flow and slope on unpaved loess-road erosion on the Chinese Loess Plateau[J]. LAND DEGRADATION & DEVELOPMENT,2020:1333-1344.
APA	Guo Wenzhao,Bai Yun,Cui Zhiqiang,Wang Wenlong,Li Jianming,&Su Zhengan.(2020).The impact of concentrated flow and slope on unpaved loess-road erosion on the Chinese Loess Plateau.LAND DEGRADATION & DEVELOPMENT,1333-1344.
MLA	Guo Wenzhao,et al."The impact of concentrated flow and slope on unpaved loess-road erosion on the Chinese Loess Plateau".LAND DEGRADATION & DEVELOPMENT (2020):1333-1344.