污染土壤植物修复技术及其机理研究

阐述了污染土壤植物修复技术消除污染物的吸收、积累、降解、抑制和转化作用的关键机制 ,并指出该技术存在的问题、局限性及其应用植物修复技术应注重的关键环节。研究表明植物根际对石油烃降解及抑制是这些化合物的主要损失机制 ,而金属的植物修复技术主要基于植物的稳定和积累作用。

Phytoremediation and its mechanisms for contaminated soils

This paper introd uces the application efficacy of phytore mediation in hydrocarbon and metal conta minated soils,and discusses the key mech anisms of uptake,accumulation,degradatio n,inhibition and transformation of petro leum hydrocarbons and/or metals in plant s.Problems,limitations and key tache are also addressed.It is concluded that the degradation and inhibition of petroleum hydrocarbons in the rhizosphere of plan ts are the primary loss mechanism for th ese compounds,and stabilization and accu mulation are the key processes for metal clean up.