Spatio-Temporal Patterns and Impacts of Sediment Variations in Downstream of the Three Gorges Dam on the Yangtze River, China
文献类型:期刊论文
作者 | Chen, Jilong1,2,3,4; Fang, Xinrui1; Wen, Zhaofei1; Chen, Qiao1,2; Ma, Maohua1; Huang, Yuanyang1; Wu, Shengjun1; Yang, Liang Emlyn5,6 |
刊名 | SUSTAINABILITY
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出版日期 | 2018-11-01 |
卷号 | 10期号:11页码:4093 |
关键词 | suspended sediment concentration Three Gorges Dam riverbank collapse impoundment |
ISSN号 | 2071-1050 |
DOI | 10.3390/su10114093 |
产权排序 | 6 |
通讯作者 | Yang, Liang Emlyn(lyang@gshdl.uni-kiel.de) |
文献子类 | Article |
英文摘要 | Spanning the Yangtze River of China, the Three Gorges Dam (TGD) has received considerable concern worldwide with its potential impacts on the downstream side of the dam. This work investigated the spatio-temporal variations of suspended sediment concentration (SSC) at the downstream section of Yichang-to-Chenglingji from 2002 to 2015. A random forest model was developed to estimate SSC using MODIS ground reflectance products, and the spatio-temporal distributions of SSC were retrieved with this model to investigate the characteristics of water-silt variation. Our results revealed that, relatively, SSC before 2003 was evenly distributed in the downstream Yangtze River, while this spatial distribution pattern changed ce 2003 when the dam started storing water. Temporally, the SSC demonstrated a W-shaped curve of seasonal variation as one peak occurred in September and two troughs in March and November, and showed a significantly decreasing trend after three-stage impoundment. After official operation of the TGD in 2009, the SSC was reduced by over 40% than before 2003. Spatially, the most significant changes occurred in the upper Jingjiang section, where the SSC dropped by 45%. During all stages of impoundment, the water impoundment to 135 m in 2003 had the most significant impact on suspended sediment. The decreased SSC has led to emerging risks of bank failure, aggravated erosion of water front and aggressive down-cutting erosion along the downstream of the dam, as well as other ecological and environmental issues that require urgent attention by the government. |
WOS关键词 | CHANGJIANG RIVER ; RESERVOIR ; WATER ; TRANSPORT ; PROJECT ; IMAGERY ; LAKE ; LOAD ; VARIABILITY ; DEPOSITION |
资助项目 | Youth Innovation Promotion Association, Chinese Academy of Sciences[2018417] ; National Natural Science Foundation of China[41501096] ; National Natural Science Foundation of China[31601211] ; Open Fund Key Laboratory of Petroleum Resources of Gansu Province[SZDKFJJ20160605] |
WOS研究方向 | Science & Technology - Other Topics ; Environmental Sciences & Ecology |
语种 | 英语 |
WOS记录号 | WOS:000451531700267 |
出版者 | MDPI |
资助机构 | Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Natural Science Foundation of China ; Open Fund Key Laboratory of Petroleum Resources of Gansu Province |
源URL | [http://ir.imde.ac.cn/handle/131551/24747] ![]() |
专题 | 中国科学院水利部成都山地灾害与环境研究所 |
通讯作者 | Yang, Liang Emlyn |
作者单位 | 1.Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China; 2.Chinese Acad Sci, Key Lab Water Environm Reservoir Watershed, Chongqing 401122, Peoples R China; 3.Inst Geol & Geophys, Key Lab Petr Resources Gansu Prov, Lanzhou 730099, Gansu, Peoples R China; 4.Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou 730099, Gansu, Peoples R China; 5.Christian Albrechts Univ Kiel, Grad Sch Human Dev Landscapes, D-24118 Kiel, Germany; 6.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Jilong,Fang, Xinrui,Wen, Zhaofei,et al. Spatio-Temporal Patterns and Impacts of Sediment Variations in Downstream of the Three Gorges Dam on the Yangtze River, China[J]. SUSTAINABILITY,2018,10(11):4093. |
APA | Chen, Jilong.,Fang, Xinrui.,Wen, Zhaofei.,Chen, Qiao.,Ma, Maohua.,...&Yang, Liang Emlyn.(2018).Spatio-Temporal Patterns and Impacts of Sediment Variations in Downstream of the Three Gorges Dam on the Yangtze River, China.SUSTAINABILITY,10(11),4093. |
MLA | Chen, Jilong,et al."Spatio-Temporal Patterns and Impacts of Sediment Variations in Downstream of the Three Gorges Dam on the Yangtze River, China".SUSTAINABILITY 10.11(2018):4093. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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