Spatiotemporal distribution of vanadium in the flooding soils mediated by entrained-sediment flow and altitude in the Three Gorges Reservoir
文献类型：期刊论文
| 作者 | Bing Haijian2 ; Zhong Zhilin1,2; Wang Xiaoxiao3; Zhu He2; Wu Yanhong2
|
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020 |
| 卷号 | 724页码:138246 |
| ISSN号 | 0048-9697 |
| 关键词 | Toxic metal Spatiotemporal variation Contamination and risk assessment Land use Riparian soils Large reservoir |
| DOI | 10.1016/j.scitotenv.2020.138246 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | The re-emergence of vanadium (V) as a toxic metal has been highlighted recently due to its long-standing environmental and health hazard. This work targeted the world largest reservoir-Three Gorges Reservoir (TGR) to explore the spatial variation of V in the flooding soils from 2014 to 2018; meanwhile, the typical riparian zones with different altitudes and land-uses at the middle reach of the TGR were selected to decipher the key drivers on the V distribution. The results showed that the concentrations of soil V in the mainstream markedly exceeded local background, but they did not vary significantly with time except a marked increase at the upper-middle reaches. Spatially, the concentrations of soil V increased towards the dam, and the increase trend became increasingly significant with time. At the typical riparian zone, the concentrations of soil V decreased strikingly with altitude despite the difference in the land-uses, and a marked change-point occurred at 160-165 m. The soil V dominated by residual fraction, followed by oxidizable and reducible fractions, and then the minimal acid-soluble fraction. The contamination and eco-risk of V in the soils were low with similar spatiotemporal variation to its concentrations. Entrained-sediment flow and particle size rather than pH and organic matters led to the spatiotemporal variation in the distribution of soil V in the mainstream, and the driving effects tended to be more predominant with time. Altitude-regulated alteration of soil properties including particle sizes and iron/manganese (hydr)oxides with different flooding duration dominated the vertical distribution of V over the local land-uses at the riparian zone. Our results reveal the hotspots of V contamination in the riparian soils of the TGR and highlight unceasing focus on the variation in the distribution and dynamic migration of soil V due to its levels out of limits and changing soil conditions. (C) 2020 Elsevier B.V. All rights reserved. |
| 电子版国际标准刊号 | 1879-1026 |
| 语种 | 英语 |
| WOS记录号 | WOS:000532695900004 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/34623]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | Bing Haijian; Wu Yanhong |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, China; 2.The Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 3.School of Land and Resources, China West Normal University, Nanchong 637000, China |
| 推荐引用方式 GB/T 7714 | Bing Haijian,Zhong Zhilin,Wang Xiaoxiao,et al. Spatiotemporal distribution of vanadium in the flooding soils mediated by entrained-sediment flow and altitude in the Three Gorges Reservoir[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,724:138246. |
| APA | Bing Haijian,Zhong Zhilin,Wang Xiaoxiao,Zhu He,&Wu Yanhong.(2020).Spatiotemporal distribution of vanadium in the flooding soils mediated by entrained-sediment flow and altitude in the Three Gorges Reservoir.SCIENCE OF THE TOTAL ENVIRONMENT,724,138246. |
| MLA | Bing Haijian,et al."Spatiotemporal distribution of vanadium in the flooding soils mediated by entrained-sediment flow and altitude in the Three Gorges Reservoir".SCIENCE OF THE TOTAL ENVIRONMENT 724(2020):138246. |
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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