苏州河底泥疏浚对围隔中水生生态系统的影响  

Influence of Dredging on Suzhou Creek Ecology System

作　　者：戚仁海[1] 徐亚同[1] 刘赟[1] 

机构地区：[1]华东师范大学环境科学系,上海200062

出　　处：《华东师范大学学报（自然科学版）》2006年第4期127-133,共7页Journal of East China Normal University(Natural Science)

基　　金：上海市建设技术发展基金科研项目

摘　　要：通过底泥疏浚的围隔试验,对疏浚前后水质状况、浮游生物、微生物数量以及水体对生物的毒性进行对比,结果显示,疏浚使水质有所改善,水体中重金属浓度基本处于稳定；对微生物的数量没有太大的不良影响,且可以很快恢复到原来的水平；疏浚后水体的生物毒性降低,表现在疏浚后河水对发光细菌的毒性降低,试验动物死亡率下降,肝体比下降,精子异常发生率下降．因此,苏州河合理的底泥疏浚有利于水生生态系统的恢复．This study investigated the effects of dredging on the water quality, the quantity of plankton and microbe, and the toxicity of sediment. The results were as follows： after dredging, the water quality was improved; the concentration of heavy metal in water held the line; the variety of the microbe quantity was not obvious and might be recovered soon; and the toxicity of sediment was relatively weak, it included that the toxicity of sediment for the luminescent bacteria was depressed; the death rate of animal declined; the rate of liver in avoirdupois declined; and the rate of exceptional mouse sperm declined. It is suggested that dredging in Suzhou creek helped for the recovery of the aquatic ecosystem.

关 键 词：苏州河 底泥 疏浚 水生生态系统 生物毒性 

分 类 号：X522[环境科学与工程—环境工程]