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Response of soil detachment rate to the hydraulic parameters of concentrated flow on steep loessial slopes on the Loess Plateau of China

文献类型：期刊论文

作者Liu, G (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi Provinc, Peoples R China.; Liu, Puling1,2; Hu, Feinan1,2; Zheng, Fenli1,2; Zhang, Jiaqiong1,2; Xiao, Hai1; Liu, Gang1,2
刊名HYDROLOGICAL PROCESSES
出版日期2017
卷号31期号:14页码:2613-2621
ISSN号0885-6087
关键词Concentrated Flow Hydraulic Parameter Loessial Hillslope Soil Detachment Rate Steep Slope
DOI10.1002/hyp.11210
文献子类Article
英文摘要Using hydraulic parameters is essential for describing soil detachment and developing physically based erosion prediction models. Many hydraulic parameters have been used, but the one that performs the best for describing soil detachment on steep slopes when the lateral expansion (widening) of rills is not limited has not been identified. An indoor concentrated flow scouring experiment was performed on steep loessial slopes to investigate soil detachment rates for different flow rates and slope gradients. The experiments were conducted on a slope-adjustable plot (5 m length, 1 m width, 0.5 m depth). Sixteen combinations of 4 flow rates (10, 15, 20, and 25 L/min) and 4 slope gradients (17.6%, 26.8%, 36.4%, and 46.6%) were investigated. The individual and combined effects of slope gradient and flow hydraulic parameters on soil detachment rate were analysed. The results indicated that soil detachment rate increased with flow rate and slope gradient. Soil detachment rate varied linearly and exponentially with flow rate and slope gradient, respectively. Multivariate, nonlinear regression analysis indicated that flow depth exerted the greatest influence on the soil detachment rate, followed by unit discharge per unit width, slope gradient, and flow rate in this study. Shear stress and stream power could efficiently describe the soil detachment rate using a power equation. However, the unit stream power and unit energy of the water-carrying section changed linearly with soil detachment rate. Stream power was an optimal hydraulic parameter for describing soil detachment. These findings improve our understanding of concentrated flow erosion on steep loessial slopes.
学科主题Water Resources
URL标识查看原文
出版地HOBOKEN
语种英语
出版者WILEY
WOS记录号WOS:000405521700009
资助机构National Key Technology Research and Development Program of the Ministry of Science and Technology of China [2015BAC01B03-03]; Natural Science Basic Research Plan in Shaanxi Province of China [2016JQ4017]; West Light Foundation of The Chinese Academy of Sciences [2014-91]; Talents Research Start-up Foundation of Shaanxi Province [2013-02100-Z111021512]; Chinese Universities Scientific Fund [2452016102]; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403C2]; Natural Science Foundation of China [41371281] ; National Key Technology Research and Development Program of the Ministry of Science and Technology of China [2015BAC01B03-03]; Natural Science Basic Research Plan in Shaanxi Province of China [2016JQ4017]; West Light Foundation of The Chinese Academy of Sciences [2014-91]; Talents Research Start-up Foundation of Shaanxi Province [2013-02100-Z111021512]; Chinese Universities Scientific Fund [2452016102]; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403C2]; Natural Science Foundation of China [41371281] ; National Key Technology Research and Development Program of the Ministry of Science and Technology of China [2015BAC01B03-03]; Natural Science Basic Research Plan in Shaanxi Province of China [2016JQ4017]; West Light Foundation of The Chinese Academy of Sciences [2014-91]; Talents Research Start-up Foundation of Shaanxi Province [2013-02100-Z111021512]; Chinese Universities Scientific Fund [2452016102]; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403C2]; Natural Science Foundation of China [41371281] ; National Key Technology Research and Development Program of the Ministry of Science and Technology of China [2015BAC01B03-03]; Natural Science Basic Research Plan in Shaanxi Province of China [2016JQ4017]; West Light Foundation of The Chinese Academy of Sciences [2014-91]; Talents Research Start-up Foundation of Shaanxi Province [2013-02100-Z111021512]; Chinese Universities Scientific Fund [2452016102]; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403C2]; Natural Science Foundation of China [41371281]
源URL[http://ir.iswc.ac.cn/handle/361005/7966]  
专题水保所科研产出--SCI_2017--SCI
通讯作者Liu, G (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi Provinc, Peoples R China.
作者单位1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi Provinc, Peoples R China
2.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Peoples R China
3.Minist Water Resources, Yangling 712100, Peoples R China
推荐引用方式
GB/T 7714		 Liu, G ,Liu, Puling,Hu, Feinan,et al. Response of soil detachment rate to the hydraulic parameters of concentrated flow on steep loessial slopes on the Loess Plateau of China[J]. HYDROLOGICAL PROCESSES,2017,31(14):2613-2621.
APA Liu, G .,Liu, Puling.,Hu, Feinan.,Zheng, Fenli.,Zhang, Jiaqiong.,...&Liu, Gang.(2017).Response of soil detachment rate to the hydraulic parameters of concentrated flow on steep loessial slopes on the Loess Plateau of China.HYDROLOGICAL PROCESSES,31(14),2613-2621.
MLA Liu, G ,et al."Response of soil detachment rate to the hydraulic parameters of concentrated flow on steep loessial slopes on the Loess Plateau of China".HYDROLOGICAL PROCESSES 31.14(2017):2613-2621.

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来源：水土保持研究所

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