Abstract:
Ecological repair of the soil heavy metal pollution is one of the significant means that the pollution is remedyed .It is the research heatpoint in the world at the moment and is also the mere amicable environmental technique in the soil pollution remediation now.This thesis elaborates the soil heavy metal pollutants' origin、distribution and risk, and techniques of phytorepair and microorganism repair in soil heavy metal pollution. As to phytorepair technique, this thesis introduces its concept、element、forms、characteristics and its research developments, and the specific properties of plants which accumulate heavy metals exceedingly,and also discusses its shortages for the mement and endeavors needed in the future. As to microorganism repair technique,this paper elucidates its element,points out that it can take relatively sensitive soil microorganisms as indicating organisms to determin peak concentration permitted in the soil,and expects the applying prospects of microorganisms which are capable of degradeing heavey metals and cultivated by biotechnology.Both the two techniques put forward a new approach of soil heavey metal pollution remediation and ecological repair.