基于GIS的混合加权模式在天津城郊土壤重金属污染评价中的应用  

Assessment of Pollution of Heavy Metals in Soils of Tianjin Suburb by a Mixed Weighted Model based on GIS

作　　者：师荣光[1] 高怀友[1] 赵玉杰[1] 刘凤枝[1] 王跃华[1] 郑向群[1] 姚秀荣[1] 王斌[2] 

机构地区：[1]农业部环境保护科研监测所,天津300191 [2]天津市农业局,天津300074

出　　处：《农业环境科学学报》2006年第S1期17-20,共4页Journal of Agro-Environment Science

基　　金：科技部基础性工作专项资金项目"农业环境与农产品污染监测信息网络与数据库("2001DEB30065);国家科技攻关计划子课题"农业环境数据库的更新与体系化扩展"(2004BA608B-01-04)

摘　　要：应用混合加权模式对天津城郊农田土壤的重金属污染进行评价,并与内梅罗指数法计算的综合污染指数进行对比,以GIS输出表达,认为混合加权法对环境质量具有较好的灵敏性,能将环境质量的差别较好的区分开来。根据混合加权的计算结果,利用地统计方法,在GIS的支持下,得出天津城郊混合加权的分析结果。Assessment of pollution of heavy metals in soils of Tianjin suburb land was done by a mixed weighted model and the results were compared with Nemerow index.Both analysis results were displayed on GIS in the present investigation.It could be concluded that the mixed weighted model was characterized by a better sensitive to express environmental quality and its computing answer was capable of distinguishing the studied area environmental quality at high reality.Using geostatistical techniques,the analysis results of the mixed weighted model based on GIS was also concluded in our study.

关 键 词：混合加权 GIS 重金属污染 污染评价 地统计 

分 类 号：X825[环境科学与工程—环境工程]