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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, Bing1; Wang, Zhan-li2,3; Zhang, Qing-Wei2; Shen, Nan2; Liu, June4
2019
Source PublicationSOIL & TILLAGE RESEARCH
ISSN0167-1987
Volume185Pages:9-16
Corresponding AuthorWang, Zhan-li(zwang@nwsuaf.edu.cn)
AbstractThe 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.
KeywordSoil detachment rate Sheet flow Sediment load Hydraulic parameters Detachment-limited Steep slopes
DOI10.1016/j.still.2018.08.012
WOS KeywordSATURATED SILTY LOESS ; INTERRILL EROSION ; RILL EROSION ; OVERLAND-FLOW ; PREDICTION TECHNOLOGY ; CONCENTRATED FLOW ; WASH DYNAMICS ; SHALLOW FLOW ; LAND-USE ; TRANSPORT
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000449127700002
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/52587
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Zhan-li
Affiliation1.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
Recommended Citation
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.
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