Quantifying the Contribution of Sediment Load to Soil Detachment Rate by Sediment-Laden Rill Flow

doi:10.2136/sssaj2017.03.0092

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	Quantifying the Contribution of Sediment Load to Soil Detachment Rate by Sediment-Laden Rill Flow
	Shen, Nan 1; Wang, Zhanli 1,2; Zhang, Qingwei 1; Wu, Bing 2,3; Wang, Dongdong 1; Zhang, Qilin 1; Liu, Jun'e 4; Wang, ZL (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.; Wang, ZL (reprint author), Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.; Wang, ZL (reprint author), Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China.
刊名	SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
	2017
卷号	81 期号:6 页码:1526-1536
ISSN号	0361-5995
DOI	10.2136/sssaj2017.03.0092
文献子类	Article
英文摘要	Sediment load changes with downslope distance during rill erosion process, and thus quantifying the potential contribution of sediment load on soil detachment rate is essential to accurately model the rill erosion process. A standardization-based method was adopted to quantify the contribution for the first time, and the rill flume with a soil-feeding hopper was specifically designed to insulate the effect of sediment load on detachment rate. Loessial soil was quantitatively fed into rill flow to produce different sediment loads. Seven flow discharges were combined with six slopes. Soil detachment rate was measured for each combination under five sediment loads (10, 25, 50, 75, and 90% of the sediment transport capacity, respectively). The results showed that soil detachment rate by sediment-laden rill flow decreased linearly with the increase in sediment load. Stream power is the best hydrodynamic parameter in relation to the detachment rate under different sediment loads compared with shear stress and unit stream power. The comprehensive response relationship of soil detachment rate to sediment load and stream power is a binary linear equation (R-2 = 0.9482). The contribution rate of sediment load to soil detachment rate is 30.43% and that of stream power is 64.39%. The negative effect of sediment load on soil detachment rate accounts for almost one-third of the total contribution. It is important to draw sediment load as a negative factor into process-based rill erosion model. This study can provide a feasible way for researchers to quantify the contribution rate of factors and can help to understand rill erosion process sufficiently.
学科主题	Agriculture
URL标识	查看原文
出版地	MADISON
语种	英语
出版者	SOIL SCI SOC AMER
WOS记录号	WOS:000419646100026
资助机构	National Natural Science Foundation of China [41471230, 41601282, 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] ; National Natural Science Foundation of China [41471230, 41601282, 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] ; National Natural Science Foundation of China [41471230, 41601282, 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] ; National Natural Science Foundation of China [41471230, 41601282, 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]
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/7888]
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Wang, ZL (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.; Wang, ZL (reprint author), Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.; Wang, ZL (reprint author), Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China 4.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710000, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Shen, Nan,Wang, Zhanli,Zhang, Qingwei,et al. Quantifying the Contribution of Sediment Load to Soil Detachment Rate by Sediment-Laden Rill Flow[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2017,81(6):1526-1536.
APA	Shen, Nan.,Wang, Zhanli.,Zhang, Qingwei.,Wu, Bing.,Wang, Dongdong.,...&Wang, ZL .(2017).Quantifying the Contribution of Sediment Load to Soil Detachment Rate by Sediment-Laden Rill Flow.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,81(6),1526-1536.
MLA	Shen, Nan,et al."Quantifying the Contribution of Sediment Load to Soil Detachment Rate by Sediment-Laden Rill Flow".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 81.6(2017):1526-1536.