Effects of Simulated Gravel on Hydraulic Characteristics of Overland Flow Under Varying Flow Discharges, Slope Gradients and Gravel Coverage Degrees
文献类型：期刊论文
| 作者 | Liu, Xiaona; Fan, Dengxing; Yu, Xinxiao; Liu, Ziqiang2; Sun, Jiamei3 |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2019 |
| 卷号 | 9 |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-019-56223-2 |
| 文献子类 | Article |
| 英文摘要 | To quantify the hydraulic characteristics of overland flow on gravel-covered slopes, eight flow discharges (Q) (8.44-122 L/min), five slope gradients (J) (2 degrees-10 degrees) and four gravel coverage degrees (Cr) (0-30%) were examined via a laboratory flume. The results showed that (1) gravel changed flow regime. Gravel increased the Reynolds number (Re) by 2.94-33.03%. Re were less affected by J and positively correlated with Cr and Q. Gravel decreased the Froude number (Fr) by 6.83-77.31%. Fr was positively correlated with Q and J and negatively correlated with Cr. (2) Gravel delayed the flow velocity (U) and increased the flow depth (h) and flow resistance (f). Gravel reduced U by 1.20-58.95%. U was positively correlated with Q and J and negatively correlated with Cr. Gravel increased h by 0.12-2.41 times. h was positively correlated with Q and Cr and negatively correlated with J. Gravel increased f by 0.15-18.42 times. f were less affected by J, positively correlated with Cr and negatively correlated with Q. (3) The relationships between hydraulic parameters and Q, J and Cr identified good power functions. Hydraulic parameters were mainly affected by Cr. These results can guide the ecological construction of soil and water conservation. |
| 学科主题 | Multidisciplinary Sciences |
| 出版地 | LONDON |
| WOS关键词 | ROCK FRAGMENT COVER ; SEMIARID LOESS REGION ; SOIL-EROSION ; RAINFALL INTENSITY ; ROUGHNESS COEFFICIENTS ; SEDIMENT TRANSPORT ; SOLUTE TRANSPORT ; INTERRILL RUNOFF ; RILL HYDRAULICS ; SHEAR-STRESS |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000508919400001 |
| 出版者 | NATURE PUBLISHING GROUP |
| 资助机构 | Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [2015ZCQ-SB-01, 2019ZY36] ; National Natural Science Foundation, P.R. ChinaNational Natural Science Foundation of China (NSFC) [41501292] ; National Key Research and Development Program Project Desertification Land Control and Sand Industry Technology Development and Demonstration in Bashang Plateau and Northern North China Mountains [2016YFC0500802] ; Beijing Municipal Education CommissionBeijing Municipal Commission of Education [PXM2018_014207_000024] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/19719]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China 2.Beijing Forestry Univ, Key Lab Soil & Water Conservat & Desertificat Com, State Forestry Adm, Beijing 100083, Peoples R China 3.Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xiaona,Fan, Dengxing,Yu, Xinxiao,et al. Effects of Simulated Gravel on Hydraulic Characteristics of Overland Flow Under Varying Flow Discharges, Slope Gradients and Gravel Coverage Degrees[J]. SCIENTIFIC REPORTS,2019,9. |
| APA | Liu, Xiaona,Fan, Dengxing,Yu, Xinxiao,Liu, Ziqiang,&Sun, Jiamei.(2019).Effects of Simulated Gravel on Hydraulic Characteristics of Overland Flow Under Varying Flow Discharges, Slope Gradients and Gravel Coverage Degrees.SCIENTIFIC REPORTS,9. |
| MLA | Liu, Xiaona,et al."Effects of Simulated Gravel on Hydraulic Characteristics of Overland Flow Under Varying Flow Discharges, Slope Gradients and Gravel Coverage Degrees".SCIENTIFIC REPORTS 9(2019). |
入库方式： OAI收割
来源：植物研究所
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