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  4. 水保所科研产出--SCI
  5. 2018--SCI
Evaluation of shear stress and unit stream power to determine the sediment transport capacity of loess materials on different slopes

文献类型：期刊论文

作者Wu, Bing6,7; Wang, ZL (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.; Wang, ZL (reprint author), Minist Water Resources, Yangling, Shaanxi, Peoples R China.; Wang, ZL (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.; Wang, Sha5; Liu, June3,4; Shen, Nan1; Zhang, Qingwei1; Wang, Zhanli6,7
刊名JOURNAL OF SOILS AND SEDIMENTS
出版日期2018
卷号18期号:1页码:116-127
关键词Loess Soil Rill Flow Sediment Transport Capacity Shear Stress Unit Stream Power
ISSN号1439-0108
DOI10.1007/s11368-017-1758-5
文献子类Article
英文摘要This study aims to evaluate the relationship between loess soil-based sediment transport capacity and the most well-known and extensively used shear stress and unit stream power for different steep slopes. This study also determined the suitability of shear stress- and unit stream power-based transport capacity functions for rill flow on non-erodible bed. Loess soil was collected from Ansai County, which is located in a typical loessial region in China's Loess Plateau. The median diameter of the loess soil was 0.04 mm. The experiment was conducted in a rill flume with a soil-feeding hopper. The slope gradients in this study ranged from 10.51 to 38.39%, and the flow discharges per unit width varied from 1.11 x 10(-3) to 3.78 x 10(-3) m(2) s(-1). The sediment transport capacity was measured for each combination. Results showed that T-c can be effectively described by the power function shear stress-based equations for various slope gradients with R (2) > 0.94 and P < 0.01. Shear stress was a good predictor of T-c for different slope gradients with the Nash-Sutcliffe model efficiency (NSE) from 0.94 to 0.99. Moreover, shear stress was better in predicting T-c when the slope gradient was above 21.26%. T-c can be efficiently described by the power function unit stream power-based equations for various slope gradients with R (2) > 0.95 and P < 0.01. Unit stream power was a good predictor of T-c for different slope gradients with NSE that ranged from 0.95 to 0.99. The unit stream power predicted T-c better when the slope gradient was above 26.79%. Unit stream power was more satisfied than shear stress for predicting T-c under different slope gradients. The unit stream power-based LISEM, which was multiplied by 0.62 (i.e., the correction coefficient), predicted well the sediment transport capacity of the rill flow in our experiment, where NSE = 0.93. The shear stress-based Zhang model, which was multiplied by the correction coefficient of 0.77, adequately predicted the sediment transport capacity of rill flow in our experiment, where NSE = 0.81. By performing the controlled rill flume experiments, this study showed that shear stress and unit stream power strongly influenced T-c for certain slope gradients under non-erodible conditions.
学科主题Environmental Sciences ; Soil Science
出版地TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
语种英语
WOS记录号WOS:000419164400011
出版者SPRINGER HEIDELBERG
源URL[http://ir.iswc.ac.cn/handle/361005/7863]  
专题水保所科研产出--SCI_2018--SCI
通讯作者Wang, ZL (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.; Wang, ZL (reprint author), Minist Water Resources, Yangling, Shaanxi, Peoples R China.; Wang, ZL (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, 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, Yangling, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Shaanxi Normal Univ, Sch Geog & Tourism, Xian, Shaanxi, Peoples R China
4.Shaanxi Normal Univ, Natl Demonstrat Ctr Expt Geog Educ, Xian, Shaanxi, Peoples R China
5.Northwest A&F Univ, Coll Resources & Environm, Yangling, Shaanxi, Peoples R China
6.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
7.Minist Water Resources, Yangling, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Bing,Wang, ZL ,Wang, ZL ,et al. Evaluation of shear stress and unit stream power to determine the sediment transport capacity of loess materials on different slopes[J]. JOURNAL OF SOILS AND SEDIMENTS,2018,18(1):116-127.
APA Wu, Bing.,Wang, ZL .,Wang, ZL .,Wang, ZL .,Wang, Sha.,...&Wang, Zhanli.(2018).Evaluation of shear stress and unit stream power to determine the sediment transport capacity of loess materials on different slopes.JOURNAL OF SOILS AND SEDIMENTS,18(1),116-127.
MLA Wu, Bing,et al."Evaluation of shear stress and unit stream power to determine the sediment transport capacity of loess materials on different slopes".JOURNAL OF SOILS AND SEDIMENTS 18.1(2018):116-127.

入库方式： OAI收割

来源：水土保持研究所

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