Research review and prospect on soil heavy metals pollution II - research focus and analysis based on three major disciplines.

Based on the three major disciplines including environmental sciences,soil science and engineering,environmental content analysis was used for the study of the literature of soil heavy metal pollution from Web of Science citation databases and CNKI database.With the aspect of the soil heavy metal pollution sources,hazards,control methods and bioremediation technologies,the current research on soil heavy metal pollution and remediation in the world were analyzed.It was found that bio-remediation is the environment friendly technology for soil pollution control,Microbial remediation and phytoremediation technologies in combination with chemical,engineering and agronomic measures can better improve the efficiency of heavy metal pollution remediation.The future of research focus on heavy metal hyperaccumulator,combination of remediation technology and genetic engineering techniques were prospected.