陕西省典型设施菜地土壤重金属 污染及健康风险评估

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中图分类号：S63 文献标志码：A 文章编号：1673-2871（2025）10-197-11

Abstract：In order to investigate the degree of heavy metal pollution in the surface soil（ 0-20cm offacilityvegetable fieldsand the healthrisks it poses to humans，typical facilityvegetable planting areas（Jingyang county，Sanyuancounty， Fuping county and Gaoling district）in Shaanxi province were selected.The Nemerow comprehensive polution index method，potentialecologicalriskindex method，andhealthriskassessmentmodelwereusedtoconductsoilheavymetal polutionassessmentand healthriskassssment.Theresultsshowthattheaveragecontentof8heavymetals Cd，As，Pb， Cr，Cu，Zn，Ni，andMninthesurfacesoilof thestudyareaareallhigherthanthebackgroundvalues.ThecontentofCd and As both exceed therisk screeningvalues，thecomprehensive polution index evaluation indicates light pollution for both Cd andAs，while theother heavy metalsareat thesafe level.Thecomprehensive potential ecologicalrisk index in thestudyareais127.34，indicatingalowecologicalrisk.Withtheextensionofplanting years，thecontentofheavymetals inthe topsoilofthe studyareavariesand showsanoverallincreasing trend.Theresultsofcorrelationanalysisand principal componentanalysis indicate thatCu，Zn，Pb，andCdinthefacilityvegetable fields inthestudyareacomefromagriculturalinputs，NiandCrarenaturalsources，andAshastheabovetwosources.Theheavymetalsinthesoilof theresearch area do not pose non carcinogenic health risks to humans，but haveanacceptable range of carcinogenicrisks.Cr and Ascontribute the most to human health risks.

Key words：Shaanxi province; Greenhousevegetable field;Heavy metal insoil; Health risk assessment

据统计，截至2022年，我国设施蔬菜种植面积占世界设施栽培面积的 80% 以上。（剩余14209字）