农业环境科学学报2016，Vol.35Issue(3)：471-477,7.DOI:10.11654/jaes.2016.03.009
城镇化进程对沈抚新区土壤重金属分布的影响及风险评价
Distribution and risk assessment of soil heavy metals in Shenfu new city during urbanization process
摘要
Abstract
We mapped the spatial distribution of heavy metals(Pb, Cd, Zn, Cu, Ni and As)in 58 surface soil samples from different land use types of Shenfu new city and evaluated the impact of urbanization on the distribution and risks of heavy metals by comparing with their background values. Results showed that the concentrations of heavy metals in the east part were higher than those in the west part of the re-gion. Soil Zn, Cd and Pb mainly concentrated in the vicinity of the highways and crossover, while high concentrations of Cu and Ni were mainly found in the industrial area with Chemical Plants, Steel Plants and Electrical Control Equipment Plants. These indicated that indus-trial activities contributed a lot to the Cu and Ni pollution. The As distribution was affected relatively greatly by the soil system structure and at the same time by human factor or exogenous substances to certain extent. We evaluated the level of heavy metals in surface soils from dif-ferent land types using the Nemerow pollution index. The pollution levels followed order of urban land>woodland>farmland>rural land.关键词
重金属/城镇化/土壤污染/风险评价Key words
heavy metals/urbanization/soil pollution/risk assessment分类
资源环境引用本文复制引用
臧星华,鲁垠涛,姚宏,张士超,贾晓解..城镇化进程对沈抚新区土壤重金属分布的影响及风险评价[J].农业环境科学学报,2016,35(3):471-477,7.基金项目
国家重大水专项 （）
