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### 淮南大通煤矿废弃地土壤重金属空间分布及变异特征

1. 1.皖西学院资源环境与旅游管理学院,安徽 六安 237012
2.安徽大学资源与环境工程学院,安徽 合肥 230601
3.煤矿生态环境保护国家工程实验室,安徽 淮南 232001
• 收稿日期:2013-04-26 修回日期:2013-06-22 出版日期:2013-10-20 发布日期:2013-10-20
• 作者简介:

作者简介：孙贤斌（1970-）,男,安徽含山人,博士,副教授,主要研究方向为环境生态与GIS应用。E-mail: sunxb98@126.com

• 基金资助:
国家自然科学基金项目（41172121）、淮南矿业集团项目（HKKY-STHJYJS-JS-(2012)-001）、安徽省人文地理学重点学科建设项目（皖西学院）资助

### The Spatial Distribution of Soil Heavy Metals and Variation Characteristics of Datong Abandoned Coal Mine Area in Huainan City

Xian-bin SUN1(), Yu-cheng LI2,3()

1. 1.College of Resource Environment and Tourism Management, West Anhui University, Lu′an, Anhui 237012,China
2.College of Resources and Environmental Engineering, Anhui University, Hefei, Anhui 230601,China
3.National Engineering Laboratory of Ecological Environment Protection in Coal Mine,Huainan, Anhui 232001,China
• Received:2013-04-26 Revised:2013-06-22 Online:2013-10-20 Published:2013-10-20

Abstract:

The ecological restoration of abandoned coal area in Huainan, Anhui has great significance. This article describes the analysis of heavy metals in soil sampled from Datong abandoned mining area in Huainan City. Spatial interpolation in GIS is applied to the revelation of spatial distribution of heavy metals. Results show that: 1) In average, concentration of 5 heavy metal elements exceed the background values by 2.000~ 36.300 times, in which Cd is the most significant, followed by Hg, Cr and Pb, and the concentration of Cu is relatively smaller. Soils of chemical plant and surrounding area were severely contaminated, and the soils of coal gangue pile and surrounding area were heavily polluted. 2) Wastewater of the former chemical plant and coal gangue were the main pollution sources of Hg and Cd, and they were both accumulated in soil depth of 20-30 cm. Wastewater of the former chemical plant was the pollution sources of Cr, and Cr was accumulated in soil depth of 0-10 cm. Wastewater of the former chemical plant and coal gangue were the pollution sources of Pb and Cu, and they were accumulated in soil depth of 20-30 cm and 0-10 cm respectively. 3) The heavy metals from coal gangue were accumulated in soil depth of 20-30 cm, and the heavy metals from wastewater of the former chemical plant were accumulated in soil depth of 0-10 cm. 4) Positive correlation between concentrations of most heavy metals was significant, it was speculated that most heavy metals were mainly from the same materials. There was a significant positive correlation between Hg, Cd and organic matter, nitrogen, available phosphorus, and a significant negative correlation between Cr, Pb and organic matter, nitrogen, available phosphorus. 5) Distribution of these heavy metals presented a stronger spatial relevance because their spatial pattern were mainly influenced by natural factors such as the soil parent material, climate, topography and other structural factors. All of spatial variability was small scale. Characteristic of spatial variation was relation with the complex distribution object.

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