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Dynamics of Runoff and Suspended Sediment Transport in a Highly Erodible Catchment on the Chinese Loess Plateau
文献类型：期刊论文
| 作者 | Guangju Zhao1,2; Xingmin Mu1,2; Peng Tian5; Jianqing Zhai3,4 |
| 刊名 | land degradation & development
 |
| 出版日期 | 2016 |
| 卷号 | 27期号:0页码:839-850 |
| 关键词 | Flow–sediment Relationship Runoff Soil And Water Conservation Measures Suspended Sediment Temporal Variation |
| DOI | 10.1002/ldr.2373 |
| 文献子类 | Article |
| 英文摘要 | Runoff is the key factor to understand the land degradation causing high risk of soil erosion and can reduce the water available for human societies and ecosystems. The dynamics of runoff and suspended sediment transport are not completely understood. In this study, we examined the trends, breaking point and regime changes for the runoff and sediment load at different temporal scales using 50 years of continuous observational data from a highly erodible sub-catchment with an area of 7,325 km2 in the Beiluo River basin on the Loess Plateau, China. At the annual scale, the runoff and sediment load declined significantly (p < 0·05) with decreasing rates of 0·23 mm y 1 and 164·9 Mg km 2 y 1, respectively. Abrupt changes in the runoff and sediment load series were detected between 1979 and 1999; thus, the data were divided into intervals of 1960–1979, 1980–1999 and 2000–2009. The flow duration curve analysis indicated increasing lowflow values and decreasing daily runoff and sediment discharge peaks, which suggested that soil and water conservation measures reduced the volume of runoff and the sediment load. This led to a more uniform runoff regime. At the flood event scale, we investigated the relationship between runoff and the suspended sediment load based on 123 flood events, which showed clearly that the magnitude and frequency of hyper-concentrated sediment flows decreased in 2000–2009 compared with 1960–1999. The annual erosive rainfall exhibited non-significant changes throughout the entire study period. We conclude that soil and water conservation measures (e.g. afforestation, grassing, terraces and check dams) have played major roles in the changes in runoff and the sediment load in the Beiluo River catchment. |
| 语种 | 英语 |
| WOS记录号 | WOS:000373949600034 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/7816]  |
| 专题 | 水土保持研究所_水保所科研产出--SCI_2016--SCI |
| 通讯作者 | Xingmin Mu |
| 作者单位 | 1.Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources, 26 Xinong Road, Yangling, 712100, Shaanxi Province, PR China 2.nstitute of Soil and Water Conservation, Northwest A&F University, 26 Xinong Road, Yangling, 712100, Shaanxi Province, PR China 3.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing, 210044, PR China 4.National Climate Center, China Meteorological Administration, Beijing, 100081, PR China 5.College of Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi Province, PR China |
| 推荐引用方式 GB/T 7714 | Guangju Zhao,Xingmin Mu,Peng Tian,et al. Dynamics of Runoff and Suspended Sediment Transport in a Highly Erodible Catchment on the Chinese Loess Plateau[J]. land degradation & development,2016,27(0):839-850. |
| APA | Guangju Zhao,Xingmin Mu,Peng Tian,&Jianqing Zhai.(2016).Dynamics of Runoff and Suspended Sediment Transport in a Highly Erodible Catchment on the Chinese Loess Plateau.land degradation & development,27(0),839-850. |
| MLA | Guangju Zhao,et al."Dynamics of Runoff and Suspended Sediment Transport in a Highly Erodible Catchment on the Chinese Loess Plateau".land degradation & development 27.0(2016):839-850. |
入库方式： OAI收割
来源：水土保持研究所
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