Research on the Regional Environmental Impact and Risk Assessment Affected by Mineral Resource Development: A Case Study of the Taojia River Watershed in Hunan
文献类型：期刊论文
| 作者 | Cao, Hongying3,4; Wang, Ziwei1,3,4; Liao, Xiaoyong3,4; Li, You3,4; Zhu, Yongbing2 |
| 刊名 | FRONTIERS IN ECOLOGY AND EVOLUTION
 |
| 出版日期 | 2022-06-03 |
| 卷号 | 10页码:13 |
| ISSN号 | 2296-701X |
| 关键词 | mineral resource development heavy metals environmental quality risk assessment source analysis |
| DOI | 10.3389/fevo.2022.918446 |
| 通讯作者 | Li, You(liyou@igsnrr.ac.cn) |
| 英文摘要 | The mining and production of mineral resources can directly lead to soil and water pollution, posing a serious threat to human health. In this study, the Taojia River basin, a tributary of the Xiangjiang River, was selected as the study area. Based on the concentrations of heavy metals (As, Cd, Pb, and Zn) in 653 soil/substrate samples collected from 342 points in the study area in 2013 and 2021, the changes in soil heavy metal concentrations in the region were systematically analyzed to assess their environmental risks and impacts on regional environmental quality. The results showed that from 2013 to 2021, the As, Pb, and Zn pollution in regional soil, tailing sand, and surface water was reduced, while the Cd pollution increased. The average soil As, Pb, and Zn concentrations decreased from 3,750, 2,340, and 1,180 mg/kg to 457, 373, and 387mg/kg, respectively, while the Cd concentration increased from 0.11to 1.91 mg/kg; additionally, the overall distribution trend of heavy metal concentrations was high in the south, low in the north, and gradually decreased from upstream to downstream. The single evaluation index of heavy metal pollution risk showed that the percentages of medium to heavy pollution points in the soil As, Pb, and Zn were 84, 57, and 28%, respectively, in 2013, and this index decreased to 38, 37, and 25%, respectively, in 2021. The regional environmental quality was closely related to the intensity of mineral resource development. From 2000 to 2010, frequent mining development activities led to an increase in the area of construction land and a continuous decrease in the area of arable land, grassland, and vegetation cover in the region. During 2010-2020, the area of construction land decreased, and the vegetation coverage increased. The comprehensive evaluation index showed that the overall soil pollution risk in the watershed decreased, and the proportion of heavily polluted points decreased from 80 to 65%. It was shown by principal component analysis and factor analysis that mining development activities were the largest source of heavy metal pollution, in addition to mixed sources of tailings, solid waste, agriculture, and traffic emission sources. The results provide a scientific basis for the management and risk control of heavy metal pollution in the Taojia River basin. |
| WOS关键词 | HEAVY-METALS ; SOURCE IDENTIFICATION ; SPATIAL-DISTRIBUTION ; ATMOSPHERIC DEPOSITION ; SOURCE APPORTIONMENT ; PADDY SOILS ; LEAD ; POLLUTION ; DELTA ; BASIN |
| 资助项目 | Major Project of the National Natural Science Foundation of China[71991483] ; Fund Program of State Key Laboratory of NBC Protection for Civilian[sklnbc2018-17] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | FRONTIERS MEDIA SA |
| WOS记录号 | WOS:000812730300001 |
| 资助机构 | Major Project of the National Natural Science Foundation of China ; Fund Program of State Key Laboratory of NBC Protection for Civilian |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/179843]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, You |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.State Key Lab Nucl Biol & Chem NBC Protect Civilia, Beijing, Peoples R China 3.Beijing Key Lab Environm Damage Assessment & Remed, Beijing, Peoples R China 4.Inst Geog Sci & Nat Resources Res, Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Hongying,Wang, Ziwei,Liao, Xiaoyong,et al. Research on the Regional Environmental Impact and Risk Assessment Affected by Mineral Resource Development: A Case Study of the Taojia River Watershed in Hunan[J]. FRONTIERS IN ECOLOGY AND EVOLUTION,2022,10:13. |
| APA | Cao, Hongying,Wang, Ziwei,Liao, Xiaoyong,Li, You,&Zhu, Yongbing.(2022).Research on the Regional Environmental Impact and Risk Assessment Affected by Mineral Resource Development: A Case Study of the Taojia River Watershed in Hunan.FRONTIERS IN ECOLOGY AND EVOLUTION,10,13. |
| MLA | Cao, Hongying,et al."Research on the Regional Environmental Impact and Risk Assessment Affected by Mineral Resource Development: A Case Study of the Taojia River Watershed in Hunan".FRONTIERS IN ECOLOGY AND EVOLUTION 10(2022):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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