Abstract:

Phytoremediation is a novel, solar-driven, in-situ and cost-effective technology for the remediation of heavy metal contaminated environments, and become a hot topic in recent years which attracts scholars. But low heavy metal bioavailability and small biomass of hyperaccumulators limits application of phytoremediation technology. Finding natural environment-friendly clelator and plant remediation system with high extraction efficiency will help break through the bottlenecks of phytoremediation. On the basis of analyzing and summing up the relative literatures, and combining the theory of ecological niche and phytoremediation, the author discussed remediation ability of woody, weed plant in heavy metal contaminated soil, and analyzed the feasibility of woody-weed plant joint remediation, presented a new development direction of phytoremediation.