台州市路桥区4种绿化类型土壤重金属污染特征及风险评价  

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

作　　者：吴才华 张晓勉[2] 谢长明 岳春雷[2] 李贺鹏[2] 王珺[2] 徐康 WU Chai-hua;ZHANG Xiao-mian;XIE Chang-ming;YUE Chun-lei;LI He-peng;WANG Jun;XU Kang(Luqiao Forestry Station of Taizhou,Taizhou,Zhejiang 318050,China;Zhejiang Forestry Academy,Hangzhou 310023,China)

机构地区：[1]台州市路桥区林特总站,浙江台州318050 [2]浙江省林业科学研究院,浙江杭州310023

出　　处：《浙江林业科技》2019年第5期38-44,共7页Journal of Zhejiang Forestry Science and Technology

基　　金：浙江省重点研发项目(2018C03047);台州市农业类一般项目(162hb02);浙江省院所专项(2017F30016)

摘　　要：2018年4月,选择浙江省台州市路桥区分布比较广、比较有代表性的4种绿化类型(苗圃地、拆解园区绿化带、拆解厂内绿化带、城镇建成区道路绿化带),对表层土壤(0~20 cm)中的4种重金属(Cu,Zn,Pb,Cd)含量进行分析,并采用内梅罗综合污染指数和潜在生态风险指数进行污染评价。结果表明:研究区4种绿化类型表层土壤中Cu,Zn,Pb,Cd平均含量高于国家土壤环境质量(GB15618-1995)二级标准,4种重金属单因子污染指数都达到重度污染水平,污染指数排序为Cd> Pb> Cu> Zn;内梅罗综合污染指数表明苗圃地处于轻微污染等级,城镇建成区道路绿化带、拆解园区道路绿化带和拆解厂内绿化带土壤中4种重金属综合污染指数均处于重度污染等级;潜在生态风险指数表明,苗圃地处于轻微生态风险水平,城镇建成区道路绿化带处于强生态风险水平,拆解园区道路绿化带和拆解厂内绿化带均处于很强的生态风险水平。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.

关 键 词：电子废弃物 重金属污染 生态风险评价 植物修复 台州市 

分 类 号：S714[农业科学—林学]