Distinguishing transport-limited and detachment-limited processes of interrill erosion on steep slopes in the Chinese loessial region

doi:10.1016/j.still.2017.12.005

	Distinguishing transport-limited and detachment-limited processes of interrill erosion on steep slopes in the Chinese loessial region
	Wu, Bing 1,3; Wang, Zhanli 1,2; Zhang, Qingwei 2; Shen, Nan 2
刊名	SOIL & TILLAGE RESEARCH
	2018-04-01
卷号	177 页码:88-96
关键词	Splash detachment rate Interrill erosion rate Transport-limited Detachment-limited Slope gradient
ISSN号	0167-1987
DOI	10.1016/j.still.2017.12.005
通讯作者	Wang, Zhanli(zwang@nwsuaf.edu.cn)
英文摘要	Distinguishing transport- and detachment-limited processes of interrill erosion on the basis of the ratio of interrill erosion rate (Q) to splash detachment rate (D) was investigated to fully understand interrill erosion processes. A modified experimental device was used to measure interrill erosion and splash detachment rates simultaneously at 12.23%, 17.63%, 26.8%, 36.4%, 40.40% and 46.63% slope gradients under rainfall intensities of 48 and 120 mm h(-1). Results showed that the transport-limited (Q < D), detachment-limited (Q > D), and transport- and detachment-limited (Q < D & Q > D) processes were respectively included in individual rainfall event, which were influenced by slope gradient and rainfall intensity, and the transport-limited process changed to a detachment-limited process early when the slope gradients were steep. Furthermore, the ratio of interrill erosion rate to splash detachment rate under rainfall intensities of 48 and 120 mm h(-1) increased from 0.006 to 36.91 and from 0.14 to 15.65 as the slope gradient increased from 12.23% to 46.63%, respectively. The research findings emphasise the importance of quantifying transport- and detachment-limited processes on steep slopes.
资助项目	National Natural Science Foundation of China[41471230] ; National Natural Science Foundation of China[41601282] ; National Natural Science Foundation of China[41171227] ; National Key Research and Development Program of China[2016YFC0402401] ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021403-C2]
WOS关键词	DIFFERENT RAINFALL INTENSITIES ; SOIL-EROSION ; SEDIMENT TRANSPORT ; SIMULATED RAINFALL ; WASH DYNAMICS ; SHEET EROSION ; SPLASH ; RUNOFF ; MODEL ; GRADIENT
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000424073900010
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/60296]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Zhanli
作者单位	1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu, Bing,Wang, Zhanli,Zhang, Qingwei,et al. Distinguishing transport-limited and detachment-limited processes of interrill erosion on steep slopes in the Chinese loessial region[J]. SOIL & TILLAGE RESEARCH,2018,177:88-96.
APA	Wu, Bing,Wang, Zhanli,Zhang, Qingwei,&Shen, Nan.(2018).Distinguishing transport-limited and detachment-limited processes of interrill erosion on steep slopes in the Chinese loessial region.SOIL & TILLAGE RESEARCH,177,88-96.
MLA	Wu, Bing,et al."Distinguishing transport-limited and detachment-limited processes of interrill erosion on steep slopes in the Chinese loessial region".SOIL & TILLAGE RESEARCH 177(2018):88-96.