Runoff and Sediment Response to Cascade Hydropower Exploitation in the Middle and Lower Han River, China
With the rapid development of hydropower exploitation in China, changes in runoff and sediment transport have become a significant issue that cannot be neglected. In this study, the Han River was selected as a study case, where the runoff variation and changes in sediment load at the Baihe, Huangjia...
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Series: | Mathematical Problems in Engineering |
Online Access: | http://dx.doi.org/10.1155/2017/8785236 |
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doaj-1bc26cbf5ecf4bfe82aa995224a1749a2020-11-25T00:17:39ZengHindawi LimitedMathematical Problems in Engineering1024-123X1563-51472017-01-01201710.1155/2017/87852368785236Runoff and Sediment Response to Cascade Hydropower Exploitation in the Middle and Lower Han River, ChinaJunhong Zhang0Mingkun Sun1Zhimin Deng2Jing Lu3Dangwei Wang4Lu Chen5Xinyuan Liu6College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, ChinaCollege of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, ChinaChangjiang Water Resources Protection Institute, Wuhan 430010, ChinaState Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, ChinaChina Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaCollege of Hydropower & Information Engineering, Huazhong University of Science & Technology, Wuhan 430074, ChinaChangjiang River Scientific Research Institute, Wuhan 430010, ChinaWith the rapid development of hydropower exploitation in China, changes in runoff and sediment transport have become a significant issue that cannot be neglected. In this study, the Han River was selected as a study case, where the runoff variation and changes in sediment load at the Baihe, Huangjiagang, Huangzhuang, and Xiantao stations were analyzed in different time periods. The results indicate that impact of cascade hydropower exploitation on runoff and sediment transport is significantly different even during the same time periods. After reservoir regulation, the decreasing of sediment load is faster than that of runoff. Strong positive correlation between runoff and sediment load exists during different time periods, while reservoir operation leads to different turning points at the Baihe, Huangjiagang, Huangzhuang, and Xiantao stations in the middle and lower Han River. As a key driving factor, runoff variation contributed to sediment transport with different impact index CR. The impact index CR before and after the first change point at the Baihe, Huangjiagang, Huangzhuang, and Xiantao stations is 43.35%, −3.68%, 11.17%, and 30.12%, respectively. This study helps us understand and evaluate the hydrological changes under cascade hydropower exploitation in the middle and lower Han River.http://dx.doi.org/10.1155/2017/8785236 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Junhong Zhang Mingkun Sun Zhimin Deng Jing Lu Dangwei Wang Lu Chen Xinyuan Liu |
spellingShingle |
Junhong Zhang Mingkun Sun Zhimin Deng Jing Lu Dangwei Wang Lu Chen Xinyuan Liu Runoff and Sediment Response to Cascade Hydropower Exploitation in the Middle and Lower Han River, China Mathematical Problems in Engineering |
author_facet |
Junhong Zhang Mingkun Sun Zhimin Deng Jing Lu Dangwei Wang Lu Chen Xinyuan Liu |
author_sort |
Junhong Zhang |
title |
Runoff and Sediment Response to Cascade Hydropower Exploitation in the Middle and Lower Han River, China |
title_short |
Runoff and Sediment Response to Cascade Hydropower Exploitation in the Middle and Lower Han River, China |
title_full |
Runoff and Sediment Response to Cascade Hydropower Exploitation in the Middle and Lower Han River, China |
title_fullStr |
Runoff and Sediment Response to Cascade Hydropower Exploitation in the Middle and Lower Han River, China |
title_full_unstemmed |
Runoff and Sediment Response to Cascade Hydropower Exploitation in the Middle and Lower Han River, China |
title_sort |
runoff and sediment response to cascade hydropower exploitation in the middle and lower han river, china |
publisher |
Hindawi Limited |
series |
Mathematical Problems in Engineering |
issn |
1024-123X 1563-5147 |
publishDate |
2017-01-01 |
description |
With the rapid development of hydropower exploitation in China, changes in runoff and sediment transport have become a significant issue that cannot be neglected. In this study, the Han River was selected as a study case, where the runoff variation and changes in sediment load at the Baihe, Huangjiagang, Huangzhuang, and Xiantao stations were analyzed in different time periods. The results indicate that impact of cascade hydropower exploitation on runoff and sediment transport is significantly different even during the same time periods. After reservoir regulation, the decreasing of sediment load is faster than that of runoff. Strong positive correlation between runoff and sediment load exists during different time periods, while reservoir operation leads to different turning points at the Baihe, Huangjiagang, Huangzhuang, and Xiantao stations in the middle and lower Han River. As a key driving factor, runoff variation contributed to sediment transport with different impact index CR. The impact index CR before and after the first change point at the Baihe, Huangjiagang, Huangzhuang, and Xiantao stations is 43.35%, −3.68%, 11.17%, and 30.12%, respectively. This study helps us understand and evaluate the hydrological changes under cascade hydropower exploitation in the middle and lower Han River. |
url |
http://dx.doi.org/10.1155/2017/8785236 |
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