水土保持学报2013，Vol.27Issue(3)：106-109,4.
不同土地利用类型下降雨径流重金属Cd的生态风险分析
Ecological Risk Analysis of Heavy Metal in Rainfall Runoff Under Different Land Use Types
摘要
Abstract
Sixty-four samples of farmland runoffs were collected from Tianjin suburban after strong rainfall.To screen the heavy metals which posed larger potential ecological risk including Cu and Cd based on the hazard quotient.The results showed that the potential ecological risk of Cr,Ni,Zn,As and Pb were smaller,while those of Cu and Cd were larger,and their percentage of monitoring point that existed ecological risk was 70％ and 44％,respectively.According to the distribution of Cu and Cd,the probability density functions of each element were constructed.Monte-Carlo technique was used to calculate the ecological risk probabilities caused by Cu and Cd in rainfall runoff under three land use types including residential land and land for industrial and mining usage,agricultural land and forest land,garden plots.The ecological risk probabilities of Cu and Cd reached the maximum in rainfall runoff under residential land and land for industrial and mining usage,which ecological risk probabilities were 93.89％ and 49.99％,respectively.关键词
土地利用类型/降雨径流/重金属/生态风险Key words
land use type/ rainfall runoff/ heavy metal/ ecological risk分类
资源环境引用本文复制引用
师荣光,郑向群,孙玉芳,张宏斌,赵欣,李晓华..不同土地利用类型下降雨径流重金属Cd的生态风险分析[J].水土保持学报,2013,27(3):106-109,4.基金项目
中国农业科学院科技经费项目"基于人体健康风险分析的农产品产地安全诊断技术研究"(201209) （201209）
