安徽农业科学2025，Vol.53Issue(13)：37-43,7.DOI:10.3969/j.issn.0517-6611.2025.13.009
四川某工业区周边农业土壤重金属污染评价和来源分析
Evaluation and Source Analysis of Heavy Metal Pollution in Agricultural Soil Around an Industrial Area in Sichuan Province
摘要
Abstract
[Objective]To understand the heavy metal pollution status of agricultural soils around an industrial area in Sichuan region and ana-lyze its sources.[Method]Thirty-eight soil samples and 34 crop samples were collected,and pearson correlation analysis and principal compo-nent analysis were used to explore the sources of major heavy metals(Cr,Mn,Cu,Zn,Cd,Pb,Hg,As)in soil,combined with the single-factor pollution index method,the Nemero comprehensive pollution index method,geocumulative index method and potential ecological risk index method,to carry out the contamination of heavy metals in paddy field soils in the study area characterization and risk evaluation,and analyze the enrichment characteristics of crops.[Result]The soils in the study area were polluted by heavy metal composites to different degrees,with the overall level of heavy pollution.The heavy metals mainly originated from industrial activities,agricultural activities and exhaust emissions.The results of single-factor pollution showed that the element Cd belonged to heavy pollution,Pb was medium pollution,Mn,Cr and Zn were po-tential pollution,and As,Cu and Hg were no pollution.The results of geocumulative index showed that the mean value of Cd was in the level of heavy-very heavy pollution,the mean value of Pb was in the level of medium-heavy pollution,and the mean value of Hg and Cr was in the level of medium pollution.Zn,Cu,Mn were in the level of no pollution-slight pollution,and As was in the level of no pollution.Individual indices of potential ecological hazards of heavy metals showed that the most important ecological risk factor was Cd,whose ecological risk hazard level was very strong,Hg was at very strong ecological risk;Pb was at moderate ecological risk,while the risk values of other elements were slightly pol-luted;the Cd content of heavy metals in crops in the study area had the risk of exceeding the standard.[Conclusion]The agricultural soils in the investigated area have high ecological risks and need to be controlled and treated for remediation;the conclusions reached by different eval-uation methods are slightly different,and appropriate methods should be selected when evaluating soils of different textures.关键词
农业土壤/土壤重金属/单因子污染指数/地累积指数/潜在生态风险指数/重金属来源Key words
Agricultural soil/Soil heavy metals/Single-factor pollution index/Geoaccumulation index/Potential ecological risk index/Heavy metal sources分类
资源环境引用本文复制引用
薛佳豪,陈晓明,唐运来,周君..四川某工业区周边农业土壤重金属污染评价和来源分析[J].安徽农业科学,2025,53(13):37-43,7.基金项目
国家自然科学基金项目(12275227). （12275227）
