Effects of natural factors on the spatial distribution of heavy metals in soils surrounding mining regions
文献类型：期刊论文
| 作者 | Ding, Qian1; Cheng, Gong2; Wang, Yong1; Zhuang, Dafang1 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 578页码:577-585 |
| 关键词 | Statistical and spatial analysis Areas surrounding mines Soil heavy metals Terrain Wind direction River |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2016.11.001 |
| 通讯作者 | Wang, Yong(wangy@igsnrr.ac.cn) |
| 英文摘要 | Various studies have shown that soils surrounding mining areas are seriously polluted with heavy metals. Determining the effects of natural factors on spatial distribution of heavy metals is important for determining the distribution characteristics of heavy metals in soils. In this study, an 8 km buffer zone surrounding a typical nonferrous metal mine in Suxian District of Hunan Province, China, was selected as the study area, and statistical, spatial autocorrelation and spatial interpolation analyses were used to obtain descriptive statistics and spatial auto correlation characteristics of As, Pb, Cu, and Zn in soil. Additionally, the distributions of soil heavy metals under the influences of natural factors, including terrain (elevation and slope), wind direction and distance from a river, were determined. Layout of sampling sites, spatial changes of heavy metal contents at high elevations and concentration differences between upwind and downwind directions were then evaluated. The following results were obtained: (1) At low elevations, heavy metal concentrations decreased slightly, then increased considerably with increasing elevation. At high elevations, heavy metal concentrations first decreased, then increased, then decreased with increasing elevation. As the slope increased, heavy metal contents increased then decreased. (2) Heavy metal contents changed consistently in the upwind and downwind directions. Heavy metal contents were highest in 1 km buffer zone and decreased with increasing distance from the mining area. The largest decrease in heavy metal concentrations was in 2 km buffer zone. Perennial wind promotes the transport of heavy metals in downwind direction. (3) The spatial extent of the influence of the river on Pb, Zn and Cu in the soil was 800 m. (4) The influence of the terrain on the heavy metal concentrations was greater than that of the wind. These results provide a scientific basis for preventing and mitigating heavy metal soil pollution in areas surrounding mines. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS关键词 | TIBETAN PLATEAU ; RISK-ASSESSMENT ; CHINA ; CONTAMINATION ; SEDIMENTS ; PROVINCE ; SPAIN ; MINE ; CITY ; CO |
| 资助项目 | High Resolution Earth Observation Systems of National Science and Technology Major Projects[10-Y30B11-9001-14/16] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000390964800059 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | High Resolution Earth Observation Systems of National Science and Technology Major Projects |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/65200]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Yong |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Cent S Univ, Sch Geosci & Infophys, Minist Educ, Key Lab Metallogen Predict Nonferrous Met & Geol, Changsha 410083, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, Qian,Cheng, Gong,Wang, Yong,et al. Effects of natural factors on the spatial distribution of heavy metals in soils surrounding mining regions[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,578:577-585. |
| APA | Ding, Qian,Cheng, Gong,Wang, Yong,&Zhuang, Dafang.(2017).Effects of natural factors on the spatial distribution of heavy metals in soils surrounding mining regions.SCIENCE OF THE TOTAL ENVIRONMENT,578,577-585. |
| MLA | Ding, Qian,et al."Effects of natural factors on the spatial distribution of heavy metals in soils surrounding mining regions".SCIENCE OF THE TOTAL ENVIRONMENT 578(2017):577-585. |
入库方式： OAI收割
来源：地理科学与资源研究所
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