摘要
为揭示沿海滩涂快速发展区土壤重金属的污染风险状况,分别采用潜在生态风险指数法与内梅罗综合污染指数法,对苏北沿海某滩涂区土壤重金属(Pb、Cr、Cd、Hg和As)含量、污染风险及其空间格局进行了评价.结果表明:目前该滩涂区土壤环境质量总体良好,土壤重金属呈轻度潜在生态风险和警戒级综合污染水平,其趋势均为工业园区>居民区>镇郊农田>围垦滩涂;2种评价方法的研究结果均表明,工业发展和城镇化建设是驱动土壤重金属污染风险升高的主因,强烈的人类活动加速了土壤重金属累积,宜采用优化产业布局、加强监测监控和强化源头防治以防控和削减该区土壤重金属危害.
The heavy metal pollution risk in the mudflat soils of the coastal area of northern Jiangsu Province was evaluated.The driving mechanism of heavy metals in the area was also revealed.The concentrations,pollution risk status and spatial patterns of heavy metals（Pb,Cr,Cd,Hg,As） in the soils were analyzed by using the potential ecological risk index and the Nemero integrated pollution index.The results indicated that the quality of mudflat soils across the coastal area was generally good.The potential ecological risks of heavy metals were at a low level,and the Nemero integrated pollution levels were at a warning grade with the order industrial zone residential area suburb farmland newly-reclaimed tidal flats.The assessment results from the two methods showed that industrial development and urban construction were the major factors increasing the heavy metal pollution level.Intensive human activities have significantly accelerated the enrichment of heavy metals in the soil,and countermeasures such as industrial layout optimization,persistent in situ monitoring and source control enhancement are recommended to prevent and minimize the heavy metal hazards.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2012年第5期512-518,共7页
Research of Environmental Sciences
基金
国家公益性行业(农业)科研专项(200903001)
江苏省企业院士工作站项目(BM2009622)
江苏省科技成果转化项目(BA2010116)
关键词
苏北
沿海海涂
重金属
潜在生态风险
内梅罗综合污染
northern Jiangsu Province
coastal mudflat
heavy metal
potential ecological risk
Nemero integrated pollution
