Potential Use of Sedum Spectabile Inoculated with Glomus Mosseae in Phytostabilization of Lead/Zinc Tailings

The effects of the arbuscular mycorrhizal fungus Glomus mosseae on growth, metal uptake and translocation of Sedum spectabile for phytostabilization of lead/zinc tailings were investigated by a greenhouse experiment in this study. The results showed that mycorrhizal inoculation significantly improved biomass of S. spectabile. The Pb, Cu and Cd concentrations in roots were higher than those in shoots both with and without mycorrhizas, while Zn concentration was higher in shoots than that in roots. In addition, it was found that most of the values of bioconcentration factor and translocation factor of tested metals were much lower than 1, except the translocation factor values of Zn were about 3, and inoculation further significantly reduced translocation factor values of Pb and Cu. These results suggested that S. spectabile inoculated with mycorrhizal might be a potential approach to revegetation of Pb/Zn tailings in northern China.