基于GIS的典型石油开采区土壤重金属的分布规律  

Distribution Rules of Heavy Metals in the Soil of a Typical Oilfield Based on GIS

作　　者：孟冲[1] 李都峰[2] 杜显元[1] 李兴春 李鱼[1] 

机构地区：[1]华北电力大学资源与环境研究院,北京102206 [2]中国黄金集团公司,北京100011 [3]中国石油安全环保技术研究院,北京100083

出　　处：《安徽农业科学》2012年第17期9306-9310,共5页Journal of Anhui Agricultural Sciences

基　　金：国家"十一五"科技支撑项目(2008BAC43B01)

摘　　要：基于GIS在土壤污染研究中的应用,结合地累积指数法,研究了某典型石油开采区土壤重金属的空间分布规律和污染等级。利用地累积指数进行插值绘制出的重金属污染分布图。结果表明,研究区内重金属的水平分布差异较大,而Cr、Fe、Ni的地累积指数分布相似度较高,可能属同一来源;除Pb、Zn、Ni在不同深度水平变化较大外,其余重金属均保持稳定;从地累积指数等级上来看,Pb在各井处均达到2级及以上污染;Cu、Co在少数井处达到1级或1级以上污染。地累积指数与GIS相结合能更加直观地反映重金属的污染分布状况。Based on the application of GIS in the study of soil pollution,the method of geo-accumulation index was used to study the spatial dis- tribution and pollution degree of soil heavy metals in a typical oilfield. The distribution map of heavy metals pollution was drawn by geo-aecumula- tion index interpolation. As indicated by the results, the horizontal distribution of heavy metals differed largely in the study area,but Cr, Fe and Ni had a high similarity in the distribution of geo-accumulation index, and they may have a same source; the distribution of all heavy metals kept sta- ble except Pb,Zn and Ni which had a great variation at different depths ; in view of the geo-accumutation level,the pollution of Pb has reached the second and above level at each spot,while that of Cu and Co have reached the first or above level in some spots. The combination of geo-accumu- lation index and GIS can give a more intuitive reflection of the distribution of heavy metals in the soil.

关 键 词：土壤 重金属 ARCGIS 地累积指数 污染等级分布 

分 类 号：S152.2[农业科学—土壤学] X825[农业科学—农业基础科学]