The characteristics of sediments in the middle and lower Yangtze River influenced by dam operation
文献类型：期刊论文
| 作者 | Guo,Anan1,2; He,Li2 |
| 刊名 | IOP Conference Series: Earth and Environmental Science
 |
| 出版日期 | 2021 |
| 卷号 | 643期号:1 |
| ISSN号 | 1755-1307 |
| DOI | 10.1088/1755-1315/643/1/012134 |
| 英文摘要 | Abstract Since the Three Gorges Dam (TGD) was operated, the sediment characteristics in the downstream river have changed significantly. The characteristics of sediments can be partly reflected by the critical diameter to distinguish wash load and bed material load (WAB) and the ratio of wash load to suspended sediment (WTS). However, the WAB and WTS of the Yangtze River(YR) have not been fully investigated. In this study, data of sized suspended sediment and bed material at four stations in the middle and lower YR were collected to calculate the WAB and WTS, using the most-curvature method. The variations were then analyzed. The results suggest that the WAB and WTS of Yichang station varied greatly before the impoundment, while that of other stations were in small fluctuations. After the impoundment, the WAB of Yichang station increased dramatically to 1.856 mm, and the growth rate of the WAB at Jianli and Hankou stations were 1.0% and 4.1%, respectively (compared with WAB in 2002), while that of Datong station was -8.4%. Comparing with the rising WAB, the WTS of Yichang station continued to rise until it was close to 100%. However, the WTS of other stations decreased overall (30%-40% in Jianli and Hankou, and 8% in Datong). |
| 语种 | 英语 |
| WOS记录号 | IOP:1755-1307-643-1-012134 |
| 出版者 | IOP Publishing |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/137878]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 作者单位 | 1.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China 2.Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China |
| 推荐引用方式 GB/T 7714 | Guo,Anan,He,Li. The characteristics of sediments in the middle and lower Yangtze River influenced by dam operation[J]. IOP Conference Series: Earth and Environmental Science,2021,643(1). |
| APA | Guo,Anan,&He,Li.(2021).The characteristics of sediments in the middle and lower Yangtze River influenced by dam operation.IOP Conference Series: Earth and Environmental Science,643(1). |
| MLA | Guo,Anan,et al."The characteristics of sediments in the middle and lower Yangtze River influenced by dam operation".IOP Conference Series: Earth and Environmental Science 643.1(2021). |
入库方式： OAI收割
来源：地理科学与资源研究所
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