Response of soil detachment rate by raindrop-affected sediment-laden sheet flow to sediment load and hydraulic parameters within a detachment-limited sheet erosion system on steep slopes on Loess Plateau, China

doi:10.1016/j.still.2018.08.012

	Response of soil detachment rate by raindrop-affected sediment-laden sheet flow to sediment load and hydraulic parameters within a detachment-limited sheet erosion system on steep slopes on Loess Plateau, China
	Wu, Bing 1; Wang, Zhan-li 2,3; Zhang, Qing-Wei 2; Shen, Nan 2; Liu, June 4
刊名	SOIL & TILLAGE RESEARCH
	2019
卷号	185 页码:9-16
关键词	Soil detachment rate Sheet flow Sediment load Hydraulic parameters Detachment-limited Steep slopes
ISSN号	0167-1987
DOI	10.1016/j.still.2018.08.012
通讯作者	Wang, Zhan-li(zwang@nwsuaf.edu.cn)
英文摘要	The response of soil detachment rate by raindrop-affected sediment-laden sheet flow to sediment load and hydraulic parameters was investigated within a detachment-limited sheet erosion system on steep slopes to understand sheet erosion processes fully and derive an accurate experimental model. An experiment was conducted at slopes of 12.23%, 17.63%, 26.8%, 36.4%, 40.4% and 46.63% under rainfall intensities of 48, 60, 90, 120, 138 and 150 mm h(-1), respectively, by using simulated rainfall. Results showed that the soil detachment rate by raindrop-affected sediment-laden sheet flow decreased as the sediment load by sheet flow increased, and the decrease was a power function of sediment load by sheet flow with NSE = 0.58, MSE = 0.0099 and R-2 = 0.58. In addition, the soil detachment rate by raindrop-affected sediment-laden sheet flow increased as a linear function of shear stress, stream power and unit stream power. Shear stress and stream power could be used to predict the soil detachment rate by raindrop-affected sediment-laden sheet flow accurately through a linear equation. Stream power (R-2 = 0.87, MSE = 0.003 and NSE = 0.87) was a better predictor of soil detachment rate by raindrop-affected sediment-laden sheet flow than shear stress (NSE = 0.83, MSE = 0.004 and R-2 = 0.83). However, prediction based on unit stream power (NSE = 0.43, MSE = 0.01 and R-2 = 0.43) was poor. These findings can improve our understanding and modelling of sheet erosion processes on steep slopes in the loess region of China.
资助项目	National Natural Science Foundation of China[41471230] ; National Natural Science Foundation of China[41830758] ; National Natural Science Foundation of China[41601282] ; National Natural Science Foundation of China[41171227] ; National Key Research and Development Program of China[2016YFC0402401] ; National Key Research and Development Program of China[2017YFD0800502] ; 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	SATURATED SILTY LOESS ; INTERRILL EROSION ; RILL EROSION ; OVERLAND-FLOW ; PREDICTION TECHNOLOGY ; CONCENTRATED FLOW ; WASH DYNAMICS ; SHALLOW FLOW ; LAND-USE ; TRANSPORT
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000449127700002
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/311030/52586]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Zhan-li
作者单位	1.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Civil Engn, Xian 710049, 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.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Fanning Loess P, Yangling 712100, Shaanxi, Peoples R China 4.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wu, Bing,Wang, Zhan-li,Zhang, Qing-Wei,et al. Response of soil detachment rate by raindrop-affected sediment-laden sheet flow to sediment load and hydraulic parameters within a detachment-limited sheet erosion system on steep slopes on Loess Plateau, China[J]. SOIL & TILLAGE RESEARCH,2019,185:9-16.
APA	Wu, Bing,Wang, Zhan-li,Zhang, Qing-Wei,Shen, Nan,&Liu, June.(2019).Response of soil detachment rate by raindrop-affected sediment-laden sheet flow to sediment load and hydraulic parameters within a detachment-limited sheet erosion system on steep slopes on Loess Plateau, China.SOIL & TILLAGE RESEARCH,185,9-16.
MLA	Wu, Bing,et al."Response of soil detachment rate by raindrop-affected sediment-laden sheet flow to sediment load and hydraulic parameters within a detachment-limited sheet erosion system on steep slopes on Loess Plateau, China".SOIL & TILLAGE RESEARCH 185(2019):9-16.