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作 者 ：刘宗平

期 刊 ：生态学报 2005年 25卷 2期 页码：273~278

关键词：重金属；环境污染；生物有效性；

Keywords:heavy metals, environmental pollution, bioactivity,

摘 要 ：利用生态系统研究了白银有色金属冶炼矿区周围环境中重金属的分布及生物有效性。结果表明 ,工厂在冶炼过程中已造成 Pb、Cd、Cu、Zn对周围环境不同程度的污染 ,其含量与距工厂的距离呈负相关 ;重金属在各种生物体内均有不同程度的吸收和累积 ,其吸收累积量随重金属和生物种类的不同而有差异 ;土壤的污染 ,使农作物和牧草中 Pb、Cd含量超过动物的最大耐受量和中毒的临界值 ;动物研究发现 ,肾脏、骨骼和肝脏是机体内重金属蓄积的主要器官。因此 ,放牧动物可作为环境重金属污染状况的标识 ,对评价重金属环境污染对当地人群的危害也有重要意义。

Abstract:Baiyin in Gansu Province was an important base producing non-ferrous metals in China. This region contains extensive mineral resources characterized by large quantities of ores containing copper, lead, zinc, and iron, with attendant gold, silver and a small quantity of platinoids. A number of very large industrial enterprises were formed for lead zinc, copper, and polymetallic extraction in the 1970s. During a few decades of intensive development metallurgical industries soon occupied a very wide area. Ther...

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