近十年京杭运河苏州段底泥重金属生态风险分析  

Study on the Ecological Risk of the Heavy Metals in the Sediments of the Grand Canal in Suzhou in Recent Ten Years

作　　者：王亚超[1] 薛媛媛[1] 徐恒省[1] 

机构地区：[1]苏州市环境监测中心站,江苏苏州215004

出　　处：《环境监测管理与技术》2013年第5期15-18,59,共5页The Administration and Technique of Environmental Monitoring

基　　金：国家"十二五"水体污染控制与治理科技重大专项基金资助项目(2012ZX07506-003)

摘　　要：采用Hakonson生态风险指数法对京杭运河苏州段近十年来底泥重金属污染进行评价,对其空间分布和时间分布规律进行了分析。结果表明,京杭运河苏州段重金属为低生态风险等级,汞和镉为主要的生态风险因子,城区老运河段重金属生态风险指数最高。近十年来,京杭运河苏州段底泥重金属潜在生态风险指数呈下降趋势,重金属污染得到有效的控制。The Suzhou were assesse variations of the eco pollutions in recent ten years of the heavy metals in the sediments of the Grand Canal in d with the Hakonson potential ecological risk index methods, and the spatial and temporal logical risk were analyzed. According to the analysis results, the heavy metals in the sedi- ments of the Grand Canal were risk factors, and the ecological logical risk index of the heavy heavy metal pollution has been in the category of low in ecological risk, Hg and Cd were the potential ecological risk index of the old Grand Canal was the highest. In the last ten years, the eco- metals in the sediments of the Grand Canal showed a decrease tendency. The effectively controlled.

关 键 词：京杭运河苏州段 底泥 重金属 生态风险分析 

分 类 号：X825[环境科学与工程—环境工程]