| 铅和镉污染对大羽藓生理特性的影响 |
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| 引用本文： | 魏海英,方炎明,尹增芳.铅和镉污染对大羽藓生理特性的影响[J].应用生态学报,2005,16(5):982-984. |
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| 作者姓名： | 魏海英 方炎明 尹增芳 |
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| 作者单位： | 南京林业大学森林资源与环境学院,南京,210037 |
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| 基金项目： | 国家自然科学基金资助项目(30070155). |
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| 摘 要： | 1引言随着经济的迅猛发展,各种工农业生产和家庭消费以及人类对重金属的开采、冶炼、加工及制造等引起的重金属在环境中的释放,严重地污染了土壤、水质和大气,导致环境恶化,给社会、经济和人民生活造成了严重的危害.据统计,目前人类活动引起的Pb、Cd的人为释放量是自然释放量的12倍和5倍,其它重金属元素的人为释放量也超过自然释放量或与自然释放量持平4].关于重金属特别是Pb、Cd对植物体的影响研究多为单一污染胁迫研究,受试植物多为农作物、蔬菜等2,6,8～11].研究多集中在受试植物的外表症状、生物量变化等方面,关于重金属引起植物超…
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| 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 |
| 文章编号： | 1001-9332(2005)05-0982-03 |
| 收稿时间： | 2004-03-05 |
| 修稿时间： | 2004年3月5日 |
Effects of Pb2 + and Cd2 + pollution on physiological characteristics of Thuidium cymbifolium |
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| Wei Haiying,Fang Yanming,YIN Zengfang.Effects of Pb2 + and Cd2 + pollution on physiological characteristics of Thuidium cymbifolium[J].Chinese Journal of Applied Ecology,2005,16(5):982-984. |
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| Authors: | Wei Haiying Fang Yanming YIN Zengfang |
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| Institution: | College of Forest Resource and Environmental Science, Nanjing Forestry University, Nanjing 210037, China. why.78@163.com |
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| Abstract: | This paper dealt with the effects of Pb2+, Cd2+ and their combined pollution on the contents of chlorophyll, potassium and calcium in Thuidium cymbifolium. The results showed that except at 0.1 mg Cd2+.L(-1), the chlorophyll content decreased with increasing Pb2+ and Cd2+ concentrations, which was 18% of the control at 100 mg Cd2+.L(-1), and decreased by 48.6% at 200 mg Pb2+.L(-1). The potassium and calcium contents also decreased with increasing pollutants concentrations, being decreased by 61.1% at 100 mg Cd2+.L(-1). Cd2+ had a stronger toxicity than Pb2+, and the toxicity of their combined pollution was stronger than that of each pollutant. Pb2+ could increase the toxicity of Cd2+. |
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| Keywords: | Lead Cadmium Thuidium cymbifolium Physiological characteristics |
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