汕头经济特区土壤环境对经济、社会快速发展的环境地球化学响应  

Soil Environmental Geochemical Response to Social and Economic Development in Shantou City,Guangdong Province

作　　者：马瑾[1] 周永章[1] 万洪富[2] 窦磊[1] 付善明[1] 蔡立梅[1] 

机构地区：[1]中山大学地球环境与地球资源研究中心 [2]广东省农业环境综合治理重点实验室,广州510650

出　　处：《土壤》2008年第4期640-646,共7页Soils

基　　金：国土资源部农业地质与生态地球化学调查项目(基[2005]011-16);广东省科技厅重大专项攻关项目(2004A3030800,2005A30402006,2002C3201);广东省自然科学基金研究团队项目(2006)资助

摘　　要：通过对汕头经济特区115个土壤表层样品中8种重金属元素的分析测试,初步摸清了各区(县)土壤环境中重金属污染状况。研究区土壤中Hg、Pb两元素分别有70.43%和56.52%超过国家土壤环境质量一级标准,除As元素外,其余元素均有不同程度的累积。对照广东省土壤环境背景值,各重金属元素的累积效应更为明显,其中Cd元素更是100%超标。各区(县)土壤重金属污染状况由于地理位置及工业分布不同而产生差异。应用因子分析和聚类分析,可将研究区8种重金属元素归因为4个主因子,并分析了主因子对应的污染物来源。The contents of 8 kinds of heavy metals in 115 soil samples in Shantou City were measured and evaluated by the national soil environmental standards to assess heavy metal pollution. The results showed that Hg and Pb contents in 70.43% and 56.52% of soil samples were higher than the standards, and other heavy metals also accumulated at different extents except As, which indicated a high influence from human activities. The contents of heavy metal elements in soils of Shantou City varied greatly in the different districts due to soil location and industrial distribution. Factor Analysis and Cluster Analysis attributed the 8 kinds of heavy metals to 4 main factors, and finally the resources of the heavy metals were also analyzed.

关 键 词：土壤环境 重金属 因子分析 聚类分析 汕头 

分 类 号：S159.2[农业科学—土壤学]