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当前位置: 首页 > 文章 > 运河(杭州段)沉积物中重金属的潜在生态风险研究 浙江大学学报(农业与生命科学版) 2002,28 (6)
Position: Home > Articles > Study on the ecological risk of the sediment from the Hangzhou section of the Grand Canal, China, with potential ecological risk index. Journal of Zhejiang University (Agriculture and Life Sciences) 2002,28 (6)

运河(杭州段)沉积物中重金属的潜在生态风险研究

作  者：
何云峰;朱广伟;陈英旭;田光明;陈华林
单  位：
浙江大学环境工程系
关键词：
沉积物;重金属;生态风险;运河
摘  要：
采用潜在生态风险指数的方法对运河(杭州段)沉积物中重金属污染进行了生态风险研究.结果表明,运河(杭州段)沉积物中重金属的生态风险由大到小顺序为:Cd>Hg>Cu>Pb>As>Zn>As,Cd的生态风险远远大于其它金属元素,积累最显著的Zn的生态风险并不大.自与钱塘江沟通的三堡船闸至艮山港河段的新开挖运河沉积物的重金属生态风险较低,属于Cd的单因子污染型;艮山港至大关桥河段主要受城市生活污水污染,沉积物中重金属的生态风险属Cd-Hg复合污染型;大关桥至义桥段由于受工业污水排放的影响,沉积物中重金属的生态风险属于多种重金属的混合污染型;义桥以北的余杭农村河段又转为Cd-Hg复合型.研究表明,潜在生态风险评价法较地质积累指数法能更好地反映出沉积物中重金属的环境污染特征.
译  名：
Study on the ecological risk of the sediment from the Hangzhou section of the Grand Canal, China, with potential ecological risk index.
作  者：
HE Yunfeng1, ZHU Guangwei2, CHEN Yingxu1, TIAN Guangming1, CHEN Hualin1(Dept. of Environmental Engineering, Zhejiang University, Hangzhou 310029, China; 2. Nanjing Institute of Geography and Limnology Chinese Academy of Sciences, Nanjing 210008, China)
关键词：
sediment; heavy metal; ecological risk; canal
摘  要：
The ecological risk of the sediment of the Hangzhou section of the Grand Canal was studied with potential ecological risk index. The results showed that, potential ecological risk of heavy metals in the sediment decreased as followed: Cd > Hg > Cu > Pb > As > Zn > As. Cd is the most hazardous elements with the mean ecological risk factor of 195. Although Zn has the highest geological accumulation factor, its ecological risk was low. Ecological risk of heavy metals of the sediment belong to Cdtype in the section from Sanbao shipping lock to Genshan bridge; it belong to CdHg combined type in the Genshan to Daguan bridge section. In Daguan to Yi bridge section and Yi to Tangxi bridge section, the ecological risk of the sediment belong to multielement type and CdHg combined type, respectively. This study suggested that potential ecological risk index is a practical method for the ecological risk evaluation of the heavy metal in sediment of urban canal.

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