Heavy Metal Pollution Characteristics and Ecological Risk Assessment of 4 Greening Types Soils in Luqiao,Taizhou

In April 2018, 4 representative greening types (nursery, green belts in electronic waste dismantling industrial park, green belts in electronic waste dismantling factory and green belt on urban built-up area road ) in Luqiao district of Taizhou, Zhejiang province were choosed to reveal the pollution characteristics of 4 heavy metals(Cu, Zn, Pb,Cd) in the surface soil(0-20 cm), and Nemerow comprehensive index and potential ecological risk index (RI) were used to evaluate the pollution status. The results showed that the contents of Cu, Zn, Pb and Cd in the surface soils(0~20 cm) of the 4 greening types were higher than Environmental Quality Standard for soils(GB15618-1995), single factor pollution index of 4 heavy metals reached the level of heavy pollution and descending order was Cd > Pb > Cu > Zn. Nemerow comprehensive index indicated that nurseries were at low level pollution, green belts in electronic waste dismantling industrial park, green belts in electronic waste dismantling factory and green belt on urban built-up area road were at high level pollution. Evaluating the RI of 4 greening types, nurseries were at a low ecological risk level, green belt on urban built-up area road were at a considerable ecological risk level, green belts in electronic waste dismantling industrial park and green belts in electronic waste dismantling factory were at a high ecological risk level.