豫北地区土壤重金属污染现状与潜在生态风险分析  

Analysis on current situation and potential ecological risk of heavy metals pollution of soil in the north of Henan Province

作　　者：魏婷婷[1] 张龙冲[2] 朵海瑞[3] 吴波[1] 

机构地区：[1]中国林业科学研究院林业研究所,北京100091 [2]兰州大学,甘肃兰州730000 [3]中国林科院森林生态环境与保护研究所,北京100091

出　　处：《河南农业大学学报》2010年第4期471-475,共5页Journal of Henan Agricultural University

基　　金：国家科技支撑计划项目(2006BAD26B01)

摘　　要：通过对2006年河南省优势农产品基地中豫北5县的土壤重金属监测,采用污染指数法和Hǒkanson潜在生态风险指数法,评价了研究区域的土壤重金属污染现状及其生态风险.结果表明,豫北5县土壤的Cu,Zn,Cd,Cr,Hg,As,N i,Pb等8种重金属单因子污染指数及综合污染指数均在安全级内,土壤处于清洁水平;研究区内土壤重金属Hg潜在生态污染处于高风险状态,重金属Cd的潜在生态风险除武陟外其它均处于一般风险.滑县土壤处于潜在生态高风险,安阳,武陟,新乡3县土壤潜在生态风险处于中等,接近高风险.Basis on the monitoring result of heavy metals pollution of soil in five counties in the north of Henan Province,pollution index and Hǒkanson potential ecological risk index are adopted to evaluate the present situation of heavy metal pollution of soil in five counties in the north of Henan Province.The results showed that： the single-factor and comprehensive pollution index of heavy metals,such as Cu,Zn,Cd,Cr,Hg,As,Ni,Pb,of the soil are on the level of safety,which indicates that the soil is clean;potential ecological pollution of Hg is in high risk,that of Cd is in general risk.In five counties,the potential ecological risk of soil Huaxian is high,those of counties like Anyang,Wuzhi,and Xinxiang are medium.

关 键 词：豫北地区 土壤 重金属 污染现状 生态风险 

分 类 号：X53[环境科学与工程—环境工程]