Research advance of soil heavy metals pollution in China

Heavy metals in the soil pose great potential threats to the ecological environment and human survival.Heavy metal pollution in soil has been a worldwide problem in theory and practice.Soil heavy metal pollution literatures were researched and analyzed from pollution situation,remediation technology application and research prospect.Features of soil heavy metal pollution were analyzed emphatically.It was pointed out that hyperaccumulators remediation technology was an environment friendly technology with less cost and easy operation for soil heavy metal pollution control.Microbial remediation was also an ideal green remediation technology with less cost,less environmental effect,high efficiency and without secondary pollution.To some extent,it could bring economic benefit and ecological benefit.Combined with other methods,microbial remediation and phytoremediation technologies could improve the efficiency of soil heavy metal pollution remediation.On this basis,the emphasis and hot topic on future research should focus on the follows.Hyperaccumulators with high biomass,strong adaptability,high accumulation,easy growth and economic benefit will be selected and cultivated;soil heavy metal will be absorbed and enriched by macro fungi;multi-remediation technologies will be applied together;molecular biotechnology and genetic engineering technology will be integrated;and the effects of soil heavy metal pollution remediation will be assessed.