摘要
为掌握福州城市边缘区森林土壤重金属污染特征,选取10个典型区域作为研究对象,分析森林土壤中Zn、Mn、Cr、Pb、Cu 5种重金属的含量及分布特征,并采用单项污染指数和综合污染指数法对土壤进行质量评价,结果表明:Cr、Pb是该区土壤重金属污染最主要的元素;Zn、Cu、Pb、Cr含量随土层深度增加而减少,Mn则相反;Zn和Mn达到极显著正相关,Cr和Pb则为显著负相关,其它重金属之间都无显著相关。分别基于福建土壤环境背景值和国家土壤环境质量标准,对研究区土壤重金属污染进行评价,其评价结果相似。单项污染指数评价均表明Cr污染最严重,Cu污染最小;多项综合污染指数评价表明金鸡山森林土壤重金属污染最严重,其次是马尾快安,龙头岭污染最小。受到人类活动干扰明显较大的金鸡山、马尾快安、君竹、鼓山、旗山等地,重金属综合污染严重。
To investigate the heavy metal pollution of forest soils in the urban fringe area,sampling was taken over ten typical plots of this area,and the analysis was focused on Zn,Mn,Cr,Pb and Cu.Result showed that Cr and Pb were the top two pollutants in the forest soils.According to the background concentration values of heavy metals in the soil of Fujian Province and the relative national soil environmental standard,the authors made an assessment on the characteristics of heavy metal pollution in terms of area distribution using single pollution index and comprehensive index methods,indicating heavy metal pollution in these plots were attributed to human activities.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2011年第3期149-153,共5页
Environmental Science & Technology
基金
福建省科技厅重点项目(2008Y0004)
福建省自然科学基金(2009J01051)
关键词
森林土壤
重金属
污染
福州城市边缘区
forest soils
heavy metal
pollution
urban fringe of Fuzhou City
