长江三角洲地区土壤重金属污染的防治与调控

Prevention and Regulation Countermeasures of Soil Heavy Metal Contamination in Yangtze River Delta

简要介绍了长江三角洲地区土壤重金属污染现状与特点及其成因,在此基础上提出了长江三角洲土壤重金属污染防范措施和2种不同类型的治理与调控措施。针对典型污染源引起的局部重度重金属污染土壤,宜使用工程修复与植物修复及其联用技术进行调控。针对农业和交通运输业引起的大面积轻度重金属污染土壤,宜从提高土壤自净能力的角度,运用环境矿物修复和农业生态措施进行调控。继而,进一步提出了今后长江三角洲地区土壤重金属污染防治与调控的主要研究方向。

The status and properties of heavy metal contamination in soils from Yangtze River Delta in China were introduced briefly, as well as the cause of soil heavy metal contamination. Based on the situation of soil heavy metal contamination, this paper presented relevant prevention and two different regulation countermeasures of heavy metal contaminated soils. According to the severe local soil heavy metal contamination caused by typical heavy metal pollution sources, the soils could be remedied with engineering and bioremediation restoration measures, as well as the measures combined with each other. The large area of light heavy metal contaminated soil resulted from agriculture and transportation should improve the soil self-purification capability, and be remedied by environmental mineral and ago-ecological restoration measures. Subsequently, the main future directions relating to prevention and regulation countermeasures were further discussed.