文章摘要
尹国庆,江宏,王强,聂静茹,马友华,胡宏祥.安徽省典型区农用地土壤重金属污染成因及特征分析[J].农业环境科学学报,2018,37(1):96-104.
安徽省典型区农用地土壤重金属污染成因及特征分析
Analysis of the sources and characteristics of heavy metals in farmland soil from a typical district in Anhui Province
投稿时间:2017-06-27  
DOI:10.11654/jaes.2017-0911
中文关键词: 农用地  土壤  重金属  多元统计  地统计  PMF模型
英文关键词: agricultural land  soil  heavy metals  multivariate statistical analysis  geostatistical  PMF model
基金项目:农业部农业生态环境保护重大专项(农科教发[2012]3号);国家重大研发计划项目(2016YFD0801100)
作者单位E-mail
尹国庆 安徽农业大学资源环境与信息技术研究所, 合肥 230036  
江宏 安徽农业大学资源环境与信息技术研究所, 合肥 230036  
王强 安徽农业大学资源环境与信息技术研究所, 合肥 230036  
聂静茹 安徽农业大学资源环境与信息技术研究所, 合肥 230036  
马友华 安徽农业大学资源环境与信息技术研究所, 合肥 230036 yhma@ahau.edu.cn 
胡宏祥 安徽农业大学资源环境与信息技术研究所, 合肥 230036  
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中文摘要:
      为探讨安徽省南部山区农用地土壤重金属含量特征和污染成因,以安徽省南部某一典型区为研究区域,在农用地土壤上共布设314个点位,采集土壤样品并对其中Cd、Hg、As、Pb和Cr 5种重金属元素进行检测,运用多元统计分析、PMF (正定矩阵因子分解)模型、地统计分析等方法,对研究区农用地土壤重金属的含量水平、污染成因、空间特征进行系统分析。结果表明:研究区农用地土壤中Cd、Hg、As、Pb、Cr的含量平均值分别为0.32、0.1、14.38、49.44、87.42 mg·kg-1,超标率分别为26.93%、3.81%、23.47%、3.35%、2.23%;Cd、As在洪积物和冲积物成土母质中含量较高,Hg、Cr在洪积物成土母质中含量较高。研究表明,研究区农用地土壤重金属来源为:工矿污染源贡献率39.6%,交通污染源和大气沉降综合污染源贡献率42.3%,成土母质源贡献率18.1%。
英文摘要:
      To explore soil heavy metals concentrations and pollution sources in farmland from the southern mountain area in Anhui Province, 314 soil samples were collected from a typical area in Anhui Province to analyze Cd, Hg, As, Pb, and Cr in soils. The concentrations, sources, and spatial characteristics of soil heavy metals from the study area were analyzed with multivariate statistical analysis, positive matrix factorization(PMF) model, and geostatistical analysis. The results showed that the average concentrations of Cd, Hg, As, Pb, and Cr in farmland soils were 0.32, 0.1, 14.38, 49.44 mg·kg-1, and 87.42 mg·kg-1, respectively, with 26.93%, 3.81%, 23.47%, 3.35%, and 2.23% over standard rates. The Cd and As concentrations were higher in diluvium and alluvium parent materials, while Hg and Cr concentrations were higher in diluvium parent material. According to the PMF model, the sources of heavy metals in farmland soil were industrial and mining activities(39.6%), traffic pollution and comprehensive atmospheric deposition pollution sources(42.3%), and parent material sources(18.1%).
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