Zn and Cd hyperaccumulation in Sedum plumbizincicola under different soil contamination levels and intercropping systems

摘要：

Pot and field plot experiments were conducted to investigate Zn and Cd hyperaccumulation in a new Sedum plant: Sedum plumbizincicola. The results showed that Sedum plumbizincicola could hyperaccumulate zinc and cadmium from heavy metal contaminated soil. When soil Cd, Zn were 15.3 mg·kg <1> and 6499 mg·kg<1> respectively, the Cd, Zn contents in Sedum plant stems were 424, and 19357 mg·kg<1>, and in leaves were 285, 12911 mg·kg<1>. Sedum plants intercropped with Elsholtzia splendens increased both plant biomass and Cd, Zn concentrations in plant shoots. The Cd and Zn in Sedum were also increased when it was intercropped with Vetiveria zizanioiaes, but its biomass decreased markedly, so that the total metal extraction rates decreased.

关键词： Sedum plumbizincicola Zn Cd phytoextraction intercropping

作者: L.H. Wu N. Li D. Bi Y.M. Luo

作者单位: Soil and Environment Bioremediation Research Centre, Institute of Soil Science, Chinese Academy of Sciences, PO Box 821, Nanjing 210008, China

会议类型: 国际会议

会议名称: 第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)

会议地点: 北京

会议语种:英文

页码: 934-935

在线出版日期: 2007-07-15（万方平台首次上网日期，不代表论文的发表时间）