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| 北京门头沟矿集区土壤重金属空间分布及污染特征 |
| Spatial Distribution and Pollution Characteristics of Heavy Metals in Soil of Mentougou Mining Area of Beijing City, China |
| 投稿时间：2016-04-05 |
| DOI：10.13254/j.jare.2016.0088 |
| 中文关键词: 多元统计分析 矿集区 土壤重金属 潜在生态危害 |
| 英文关键词: multivariate statistical analysis mining area heavy metal in soil potential ecological risk |
| 基金项目:北京市矿山地质环境监测系统（一期）建设项目；国家国际科技合作专项项目（2012DFA21000）；北京市政项目“北京市废弃矿山生态环境现状调查” |
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| 中文摘要: |
| 采用ArcGIS反距离权重插值数学模型和SPSS多元统计分析对门头沟矿集区周边的土壤重金属空间分布及污染特征进行综合研究，并运用潜在生态危害指数法进行生态风险评价。结果表明，研究区域土壤重金属含量空间分布自西至东逐渐升高。研究区域重金属危害程度由大到小依次为Hg > Cd > Pb > Cr > Zn > Cu > Ni > As。研究表明煤矿开采及人类工农业生产共同作用造成的重金属危害最大，砂石类矿种造成的危害较弱。8种重金属潜在生态危害指数RI值在67.81~668.53之间，各种重金属污染的潜在生态危害由强至弱依次为Hg > Cd > As > Pb > Ni > Cu > Cr > Zn。综上所述，研究区域的土壤重金属存在危害，由于研究区域位于北京市生态涵养区，其生态危害不可小觑，需要跟踪评价和系统修复。 |
| 英文摘要: |
| The pollution characteristics and spatial distribution of soil heavy metals around mine-concentrated area in Mentougou were comprehensive studied using ArcGIS carried by inverse distance weighted interpolation mathematical model and SPSS multivariate statistical analysis. The ecological risk assessment was carried out by the potential ecological risk index. The results showed that the spatial distribution of soil heavy metal concentrations increased gradually from the west to the east of study area. Harmful degrees of heavy metals decreased in the order of Hg > Cd > Pb > Cr > Zn > Cu > Ni > As. Combination of coal mining and human activity caused the strongest risk, while the risks caused by heavy metals from sandstone minerals was relatively weak. The potential ecological risk indexes(RI) of eight heavy metals were between 67.81 and 668.53. The order of the potential ecological risk was Hg > Cd > As > Pb > Ni > Cu > Cr > Zn. In summary, the heavy metals in soil of the study area were harmful. Because the study area is located in the ecological conservation district of Beijing, the ecological harm should not be overlooked, and needs to be evaluated and repaired. |
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