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当前位置: 首页 > 文章 > 污染指示生物苔藓和蚂蚁中的重金属污染比较分析 农业环境科学学报 2003,22 (02) 27-31
Position: Home > Articles > Comparative Analysis on Heavy Metal Contents in Lichen and Ant as Indicators for City Contamination Journal of Agro-Environment Science 2003,22 (02) 27-31

污染指示生物苔藓和蚂蚁中的重金属污染比较分析

作  者：
祝栋林;李时银;孙成
单  位：
南京大学环境学院 江苏南京210093;南京大学环境学院;污染控制与资源化研究国家重点实验室
关键词：
苔藓;蚂蚁;污染;重金属;指示生物
摘  要：
采样测定并比较了城市不同区域两种指示生物苔藓和蚂蚁体内的Pb、Cu、Cr、Cd含量及分布特征,讨论了这两种指示生物的重金属累积率和土壤重金属浓度的关系。结果表明,苔藓对Pb有很强的富集能力,其体内的重金属浓度随土壤浓度的增大而增大,且比蚂蚁更易受到环境中重金属污染的影响;Pb和Cd是蚂蚁的环境敏感元素,但蚂蚁对重金属在体内的持续积累有一定的抑制机制,其体内Cu的浓度与土壤中浓度的相关性较Pb、Cd小,且Cd在较低浓度时和土壤浓度呈相关性,较高浓度时相关性受抑制。同时运用污染指数分析评估了城市环境的污染状况及重金属对指示生物的毒性。
译  名：
Comparative Analysis on Heavy Metal Contents in Lichen and Ant as Indicators for City Contamination
作  者：
ZHU Dong-lin,LI Shi-yin,SUN Cheng(State Key Laboratory of Pollution Co ntrol and Resource Reuse,School of t he Environment ,Nanjing University,Nanjing 210093,China)
关键词：
lichen;ant ;pollution;heavy metal;bio -indicator
摘  要：
The content and the distribution ch aracters of Pb,Cu,Cr,Cd in lichen an d ant were evaluated,and the relatio nship between the ratio of metal accumulation in the two bio -indicators and the levels of heavy metal in soils was als o examined.The study showed that lichen had a remarkable a bility to accumulate Pb and the internal contents of the heavy metal incre ased with the levels of heavy metal in soils.It was also concluded that the lichen was easier to be contaminated by heavy metal than ant s.The ant was sensitive to Pb and Cd,but it exhibit ed some ability to inhibit the sustaining accumulation of the heavy metals.Unlike Pb and Cd,the correlation between the internal Cu contents and Cu levels in soil was less significant.Taking Cd,though the correlation between the internal contents and levels in the s oil when the contents were low,but it would not be the case when the Cd level in soil was high.The index of pollution may be also used to assess the environmental contamination and the metal toxicity to the two indicators.

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