Contribution of River Mouth Reach to Sediment Load of the Yangtze River
This paper examined the sediment gain and loss in the river mouth reach of the Yangtze River by considering sediment load from the local tributaries, erosion/accretion of the river course, impacts of sand mining, and water extraction. A quantitative estimation of the contribution of the river mouth...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2015/415058 |
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| author | C. Wang S. B. Dai L. S. Ran L. Jiang W. T. Li |
| author_facet | C. Wang S. B. Dai L. S. Ran L. Jiang W. T. Li |
| author_sort | C. Wang |
| collection | DOAJ |
| description | This paper examined the sediment gain and loss in the river mouth reach of the Yangtze River by considering sediment load from the local tributaries, erosion/accretion of the river course, impacts of sand mining, and water extraction. A quantitative estimation of the contribution of the river mouth reach to the sediment load of the Yangtze River was conducted before and after impoundment of the Three Gorges Dam (TGD) in 2003. The results showed that a net sediment load loss of 1.78 million ton/yr (Mt/yr) occurred from 1965 to 2002 in the study area. The contribution of this reach to the sediment discharge into the sea is not as high as what was expected before the TGD. With impoundment of the TGD, channel deposition (29.90 Mt/yr) and a net sediment loss of 30.89 Mt/yr occurred in the river mouth reach from 2003 to 2012. The river mouth reach has acted as a sink but not a source of sediment since impoundment of the TGD, which has exacerbated the decrease in sediment load. Technologies should be advanced to measure changes in river channel morphology, as well as in water and sediment discharges at the river mouth reach. |
| format | Article |
| id | doaj-art-e7247380b72e49a8b9c4e86af7a1fe9a |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-e7247380b72e49a8b9c4e86af7a1fe9a2025-08-20T03:26:14ZengWileyAdvances in Meteorology1687-93091687-93172015-01-01201510.1155/2015/415058415058Contribution of River Mouth Reach to Sediment Load of the Yangtze RiverC. Wang0S. B. Dai1L. S. Ran2L. Jiang3W. T. Li4State Key Laboratory of Soil Erosion and Dry Land Farming on the Loess Plateau, Institute of Water and Soil Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, ChinaAnhui Center for Collaborative Innovation in Geographical Information Integration and Application, Chuzhou University, Fengle Road 1528, Chuzhou, Anhui 239012, ChinaDepartment of Geography, National University of Singapore, 10 Kent Ridge Crescent, 119260, SingaporeAnhui Center for Collaborative Innovation in Geographical Information Integration and Application, Chuzhou University, Fengle Road 1528, Chuzhou, Anhui 239012, ChinaAnhui Center for Collaborative Innovation in Geographical Information Integration and Application, Chuzhou University, Fengle Road 1528, Chuzhou, Anhui 239012, ChinaThis paper examined the sediment gain and loss in the river mouth reach of the Yangtze River by considering sediment load from the local tributaries, erosion/accretion of the river course, impacts of sand mining, and water extraction. A quantitative estimation of the contribution of the river mouth reach to the sediment load of the Yangtze River was conducted before and after impoundment of the Three Gorges Dam (TGD) in 2003. The results showed that a net sediment load loss of 1.78 million ton/yr (Mt/yr) occurred from 1965 to 2002 in the study area. The contribution of this reach to the sediment discharge into the sea is not as high as what was expected before the TGD. With impoundment of the TGD, channel deposition (29.90 Mt/yr) and a net sediment loss of 30.89 Mt/yr occurred in the river mouth reach from 2003 to 2012. The river mouth reach has acted as a sink but not a source of sediment since impoundment of the TGD, which has exacerbated the decrease in sediment load. Technologies should be advanced to measure changes in river channel morphology, as well as in water and sediment discharges at the river mouth reach.http://dx.doi.org/10.1155/2015/415058 |
| spellingShingle | C. Wang S. B. Dai L. S. Ran L. Jiang W. T. Li Contribution of River Mouth Reach to Sediment Load of the Yangtze River Advances in Meteorology |
| title | Contribution of River Mouth Reach to Sediment Load of the Yangtze River |
| title_full | Contribution of River Mouth Reach to Sediment Load of the Yangtze River |
| title_fullStr | Contribution of River Mouth Reach to Sediment Load of the Yangtze River |
| title_full_unstemmed | Contribution of River Mouth Reach to Sediment Load of the Yangtze River |
| title_short | Contribution of River Mouth Reach to Sediment Load of the Yangtze River |
| title_sort | contribution of river mouth reach to sediment load of the yangtze river |
| url | http://dx.doi.org/10.1155/2015/415058 |
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