广东省土壤镍背景值时空变化特征与影响因素

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中图分类号：X53 文献标志码：A 文章编号：1672-2043（2025）12-3108-14 doi：10.11654/jaes.2025-0694

Temporaland spatial variation characteristicsand influencing factorsof soil nickel background value in Guangdong Province

LUOXiaoling，LIANG Yaojie，WANG Zhongwei，XIE Zhiyi*，CHEN Duohong，LIU Jun （Guangdong Ecological Environment Monitoring Center，Guangzhou 51O3O8， China）

Abstract：InordertoclarifythevariationtrendofsoilnickelbackgroundvaueanditsinfluencingfactorsinGuangdongProvince，this studyanalyzedthevariationcharacteristsofsilnckelcontentbasedonthefixed-pointmoinginthebackgroundvalueaeai18 and022Geograpicallyweigedregresionanalysisasusedtoexploeteectsofnaturalfactors，umanfactorsndpyicaland chemicalpropertiesonsoilnckelcontentintebackgroundvaluearea.TesultssowedtattesoilnickelontentinteAlaofte backgroundvalueareainGuangdongProvincewasgeneralllow，andthespatialdistributionpaternwas‘lowinthemidleandhigh around'ThehighvalueareawaslocatedintheLeizhouPeninsulainwesternGuangdong，andthesecondhighareawaslocated inthe mountainousareaoforternGuangdongandthecoastalareaoftheearlRiverDelta.Atteoriginaldatascale，themediaarietic mean and geometric meanof soil nickel contentin layerAof the province‘sbackground value area in 2O2 were 13.0， 17.6mg⋅kg-1 and （204号 12.6mg⋅kg-1 ，respectively，which decreased by 1.0， 0.4mg⋅kg-1 and increased by 1.5mg⋅kg-1 compared with 2018.After logarithmic transformation，the mean value decreased byabout 11% ，indicating that the soil nickel content in thebackground area generally showed a downardtrend.Insmaryongthriousrableifuencngfctors，sicalndmicalpropriesspeiallationge capacity）have a greater impact on soil nickel content，and human and natural factors have limited interference.

Keywords：Guangdong; soil; background value; nickel; temporal and spatial changes

镍是人体必需的微量元素，但过量摄入会引发健康问题[1-3]。（剩余28554字）