重金属污染土壤的植物修复

Phytoremediation of heavy metal contaminated soils

对重金属污染土壤植物提取作用(主要是螯合诱导植物修复)的概念、基本原理、主要方法及存在问题进行了综述.植物修复是指利用绿色植物从环境中清除污染物或将其转变为无害形式的过程,即植物-生物修复,主要包括植物提取、植物过滤、植物固定、植物挥发和植物降解作用,其中植物提取因具有成本低、能够保持土壤肥力等特点,越来越受到人们的重视.

The concepts,principles,main methods and existing problems of phytoextraction （mainly chelate-induced phytoremediation） of heavy metal contaminated soil were reviewed.Phytoremediation is the process to use green plants to remove pollutants from the environment or to transform the pollutants into harmless forms,also known as plants-bioremediation.It includes phytoextraetion,phytofiltration or rhizofiltration,phytovolatilization,phytostabilization and phytodegradation.Phytoextraction,which has a low cost and is able to maintain soil fertility,has been paid more and more attention recently.