农业环境科学学报2025，Vol.44Issue(5)：1294-1302,9.DOI:10.11654/jaes.2024-0404
北京市昌平区农田土壤重金属健康风险评估及来源解析
Health risk assessment and source analysis of heavy metals in farmland soil in Changping District,Beijing
摘要
Abstract
To build a regional soil environment quality monitoring network,enhance soil quality supervision capabilities,break through the bottleneck constraints of healthy agricultural development,control the impact of farmland pollution,and promote green and sustainable agricultural development.Over the period from 2018 to 2022,we collected 320 soil surface samples from 64 locations within Changping District,Beijing.These samples were analyzed for the presence of eight heavy metal elements:Cd,Hg,As,Pb,Cr,Cu,Ni,and Zn.Meanwhile,we combine several methods to evaluate soil quality in the region.Additionally,we use the UNMIX model to identify the sources of soil heavy metal contamination in the study area.Our findings revealed the following results:While the potential ecological risk of heavy metals in the study area was low,there was a significant issue of heavy metal enrichment.The average concentrations of Hg,Cr,and Zn were found to be 2.4,1.9,and 1.7 times higher than the regional background values,respectively.The sources of pollution in the study area were primarily industrial(40％),natural background materials(39％),agricultural gardens(10％),and transportation(11％).Cd,Cu,and Zn,three types of heavy metal elements in the source,migration pathway may exist in the phenomenon of compound pollution.Unregulated agricultural practices and high-traffic transportation activities were identified as factors exacerbating heavy metal pollution in the study area.关键词
农田土壤/重金属/环境质量评价/生态风险评估Key words
farmland soil/heavy metal/environmental quality assessment/ecological risk assessment分类
资源环境引用本文复制引用
阚炜杰,徐明泽,左强,王金凤,田硕..北京市昌平区农田土壤重金属健康风险评估及来源解析[J].农业环境科学学报,2025,44(5):1294-1302,9.基金项目
国家重点研发计划项目(2022YFD1700703)National Key Research and Development Program of China(2022YFD1700703) （2022YFD1700703）
