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。
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.
出处
《西南农业大学学报（自然科学版）》
CSCD
北大核心
2006年第2期227-230,251,共5页
Journal of Southwest Agricultural University
基金
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
关键词
城市土壤
重金属污染
潜在生态危害
评价
urban soil
heavy metal contamination
potential ecological risk
assessment
作者简介
李章平（1986-），女，湖北随州人，西南大学图书馆副研究馆员、博士研究生，从事城市生态环境研究。
