Hyperaccumulators and phytoremediation of heavy metal contaminated soil:a review of studies in China and abroad
重金属超富集植物及植物修复技术研究进展

It has been estimated that more than 20 million hectares of farmland have been contaminated in China,accounting for 20% of the total in the country.Furthermore,a reduction of more than 10 million tons of food supplies results from this soil contamination.Techniques currently employed control soil contamination include cover with improted soil,application of lime and chemical washing.However,most of these are expensive,labour intensive and can result in further contamination problems or leaching/deposition ...