8种木本植物对矿渣中重金属的吸收与富集研究

摘要

研究通过测定栽培在铅锌矿渣中的8种木本植物体内的Pb、Zn、Cu、Cd含量，分析比较了其吸收和富集4种重金属的能力。结果表明：Pb、Zn、Cu、Cd主要富集在植物根部，只有很少一部分重金属转移到植物地上部组织中，8种植物并非超富集植物，实地植物修复中可选取光皮树、黧蒴栲、楠木以及杜鹃作为修复铅锌污染土壤的潜力树种。%Through the determination of heavy metals contents of Pb , Zn, Cu and Cd in 8 kinds of woody plants that planted in lead/zinc mine tailing slag, the plants'capacity for uptaking and accumulating the heavy metals were analyzed and compared . The results showed that Pb, Zn, Cu, Cd mainly accumulated in plant roots and a small amount of heavy metal transferred to aboveground tissues, none of those plants are hyperaccumulators.Swida wilsoniana, castanopsis fissa, phoebe zhennan and azalea can be used as potential phytoremediation species in lead/zinc contaminated soil restoration.