Metal(loid) flux change in Dongting Lake due to the operation of Three Gorges Dam, China
文献类型：期刊论文
| 作者 | Tang, Wenzhong ; Shu, Limin; Ng, Jack C.; Bai, Yaohui; Zhao, Yu; Lin, Hui; Zhang, Hong
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| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 306期号:0页码:119342 |
| 关键词 | ECOLOGICAL RISK-ASSESSMENT HEAVY-METAL CONTAMINATION SURFACE SEDIMENTS POLLUTION WATER RIVER RESERVOIR YANGTZE HARBOR SOILS |
| ISSN号 | 0269-7491 |
| 英文摘要 | A drastic decrease in the suspended sediment of Dongting Lake (DTL) has been observed due to Three Gorges Dam (TGD) impoundment operation since 2003. However, the relationship between sediment loads and metal fluxes has not been studied. This study comprehensively analyzed the content characteristics of seven metal(loid) s (As, Cd, Cr, Cu, Hg, Pb, and Zn) in the surface sediment of DTL from 2000 to 2019. The period of 2005-2009 corresponded to a metal(loid) enrichment stage in the sediment of DTL. The metal(loid) cumulative input of DTL from 2000 to 2019 reached 153 x 10(3) t, and the increasing rate was gradually diminished because of TGD operation, while the metal(loid) cumulative output reached 132 x 10(3) t. Undergoing an input-output state transition, the metal(loid) cumulative deposition of DTL in 2019 was only 42% of its peak in 2007. Especially, the metal(loid) fluxes of DTL all became negative for the first time in 2006. It is worth noting that Cd in DTL has shifted to a net export during the study period. Finally, the assessment results of pollution, risk, and toxicity indicated that metal(loid) effects on sediment quality were weakening in recent years. This study confirmed that DTL has shifted from metal(loid) deposition to export, providing new information for future DTL management options. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47711]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 通讯作者 | Zhang, Hong |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.Univ Queensland, Queensland Alliance Environm Hlth Sci, Brisbane, Qld 4102, Australia 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Wenzhong,Shu, Limin,Ng, Jack C.,et al. Metal(loid) flux change in Dongting Lake due to the operation of Three Gorges Dam, China[J]. ENVIRONMENTAL POLLUTION,2022,306(0):119342. |
| APA | Tang, Wenzhong.,Shu, Limin.,Ng, Jack C..,Bai, Yaohui.,Zhao, Yu.,...&Zhang, Hong.(2022).Metal(loid) flux change in Dongting Lake due to the operation of Three Gorges Dam, China.ENVIRONMENTAL POLLUTION,306(0),119342. |
| MLA | Tang, Wenzhong,et al."Metal(loid) flux change in Dongting Lake due to the operation of Three Gorges Dam, China".ENVIRONMENTAL POLLUTION 306.0(2022):119342. |
入库方式： OAI收割
来源：生态环境研究中心
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