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重庆市主城区土壤重金属的潜在生态危害评价
引用本文:李章平,陈玉成,杨学春,魏世强.重庆市主城区土壤重金属的潜在生态危害评价[J].西南农业大学学报,2006,28(2):227-230,251.
作者姓名:李章平  陈玉成  杨学春  魏世强
作者单位:[1]西南大学资源环境学院,重庆400716 [2]西南大学图书馆,重庆400716 [3]重庆市石柱县人民政府,重庆石柱409100
基金项目:西南大学博士启动基金资助项目(100112):重庆市主城区土壤重金属污染及其衍生环境效应
摘    要:采用Hakanson潜在生态危害指数法研究了重庆市主城区不同功能区土壤As,Cd,Cr,Cu,Hg,N i,Pb,Zn等8种重金属的污染特征。结果表明,重庆市主城区土壤重金属含量有较大差异,产生潜在生态危害的重金属主要是Hg和Cd,已分别达到极度生态危害水平和很强生态危害水平,其余均显示为轻度生态危害水平;不同功能区潜在生态危害程度的顺序依次是:居民区>商业区>工业区>旅游区>交通区>文教区,居民区、商业区、工业区均已达到很强生态危害水平,旅游区达到强度生态危害水平。

关 键 词:城市土壤  重金属污染  潜在生态危害  评价
文章编号:1000-2642(2006)02-0227-04
收稿时间:2005-12-26
修稿时间:2005-12-26

ASSESSMENT OF POTENTIAL ECOLOGICAL HAZARD OF HEAVY METALS IN URBAN SOILS IN CHONGQING CITY
LI Zhang - ping ,CHEN Yu - cheng ,YANG Xue - chun ,WEI Shi - qiang.ASSESSMENT OF POTENTIAL ECOLOGICAL HAZARD OF HEAVY METALS IN URBAN SOILS IN CHONGQING CITY[J].Journal of Southwest Agricultural University,2006,28(2):227-230,251.
Authors:LI Zhang - ping  CHEN Yu - cheng  YANG Xue - chun  WEI Shi - qiang
Institution:1. College of Resources and Environmental Sciences, Southwest University, Chongqing 400716, China; 2. People % Government of Shizhu County, Shizhu, Chongqing 409100, China
Abstract:The Hakanson potential ecological risk index was applied to assess the potential ecological risk status of heavy metals in urban soils in Chongqing city.The mean total contents of As,Cd,Cr,Cu,Hg,Ni,Pb and Zn in urban soils varied significantly,and the different functional zones were mainly contaminated with various metals.Hg and Cd were the main ecological risk factors in urban soils,their ecological risk being extremely serious and very serious,respectively,while the other heavy metals studied were at light ecological risk levels.The potential ecological risk of different functional zones appeared in the order of residence areas >shopping areas >industrial areas >scenic areas >transportation areas >culture and education areas,the first three being at a very serious ecological risk level and the scenic areas being at a serious risk level.
Keywords:urban soil  heavy metal contamination  potential ecological risk  assessment
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