Modeling soil detachment capacity by rill flow using hydraulic parameters
文献类型：期刊论文
| 作者 | Nan Shen2; Zhanli Wang1,2; Dongdong Wang2; Hao Chen2 |
| 刊名 | Journal of Hydrology
 |
| 出版日期 | 2016 |
| 卷号 | 535期号:0页码:473-479 |
| 关键词 | Soil Detachment Capacity Rill Flow Hydraulic Parameter Loess Hillslope |
| DOI | 10.1016/j.jhydrol.2016.02.013 |
| 文献子类 | Article |
| 英文摘要 | The relationship between soil detachment capacity (Dc) by rill flow and hydraulic parameters (e.g., flow velocity, shear stress, unit stream power, stream power, and unit energy) at low flow rates is investigated to establish an accurate experimental model. Experiments are conducted using a 4 0.1 m rill hydraulic flume with a constant artificial roughness on the flume bed. The flow rates range from 0.22 10 3 m2 s 1 to 0.67 10 3 m2 s 1, and the slope gradients vary from 15.8% to 38.4%. Regression analysis indicates that the Dc by rill flow can be predicted using the linear equations of flow velocity, stream power, unit stream power, and unit energy. Dc by rill flow that is fitted to shear stress can be predicted with a power function equation. Predictions based on flow velocity, unit energy, and stream power are powerful, but those based on shear stress, especially on unit stream power, are relatively poor. The prediction based on flow velocity provides the best estimates of Dc by rill flow because of the simplicity and availability of its measurements. Owing to error in measuring flow velocity at low flow rates, the predictive abilities of Dc by rill flow using all hydraulic parameters are relatively lower in this study compared with the results of previous research. The measuring accuracy of experiments for flow velocity should be improved in future research. |
| 语种 | 英语 |
| WOS记录号 | WOS:000373421500040 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/7818]  |
| 专题 | 水土保持研究所_水保所科研产出--SCI_2016--SCI |
| 通讯作者 | Zhanli Wang |
| 作者单位 | 1.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China 2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China |
| 推荐引用方式 GB/T 7714 | Nan Shen,Zhanli Wang,Dongdong Wang,et al. Modeling soil detachment capacity by rill flow using hydraulic parameters[J]. Journal of Hydrology,2016,535(0):473-479. |
| APA | Nan Shen,Zhanli Wang,Dongdong Wang,&Hao Chen.(2016).Modeling soil detachment capacity by rill flow using hydraulic parameters.Journal of Hydrology,535(0),473-479. |
| MLA | Nan Shen,et al."Modeling soil detachment capacity by rill flow using hydraulic parameters".Journal of Hydrology 535.0(2016):473-479. |
入库方式： OAI收割
来源：水土保持研究所
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