铅和镉污染对大羽藓生理特性的影响

编号 zgly0000381488

文献类型 期刊论文

文献题名 铅和镉污染对大羽藓生理特性的影响

作者 魏海英  方炎明  尹增芳 

作者单位 南京林业大学森林资源与环境学院 

母体文献 应用生态学报 

年卷期 2005,16(5)

页码 982-984

年份 2005 

分类号 TP391.41  S512.101 

关键词 生理特性  大羽藓  镉污染  Cd^2+  Pb^2+  effects  content  control  with  the  and  The  was  at  mg  铅 

文摘内容 This paper dealt with the effects of Ph^2+, Cd^2+ and their combined pollution on the contents of chlorophyll, potassium and calcium in Thuidium cymbifolium. The results showed that except at 0.1 mg Cd^2+ · L^-1, the chlorophyll content decreased with increasing Pb^2+ and Cd^2+ concentrations, which was 18 % of the control at 100 mg Cd^2+·L^-1, and decreased by 48.6 % at 200 mg Pb^2+·L^-1. The potassium and calcium contents also decreased with increasing pollutants concentrations, being decreased by 61.1% at 100 mg Cd^2+·L^-1. Cd^2+ had a stronger toxicity than Pb^2+ , and the toxicity of their combined pollution was stronger than that of each pollutant. Pb2+ could increase the toxicity of Cd^2+。