郑州荥阳市周边土壤重金属含量垂向变化与结合态特征研究

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关键词土壤重金属;结合态特征；垂向分布规律；荥中图分类号X53文献标识码A文章编号 0517-6611（2025）13-0044-07doi：10.3969/j. issn. 0517-6611.2025.13. 010

开放科学（资源服务）标识码（OSID）：

Studyon Vertical Variationin Contentand BoundedForm Characteristicsof Heavy MetalinSoil Around Xingyang City， Zhengzhou PEI Rui-liang1²，SHENG Qi1，2 ，CAI Chun-nan1 et al（1. Henan Academy of Geology， Zhengzhou，Henan 450016;2.Henan Geochemical Ecological Restoration Engineering Research Center， Zhengzhou，Henan ）

AbstractSystematicallyxploredteverticaldistributionlawandharactersticsofhmcalboundedsofheavmetalsschasd，Hg， As，and Pb inthesoil around Xingyang City，Zhengzhou.Theresults showed thatCd wassignificantlyenrichedinthesurface soil （0- 20cm ），with concentrations2-3 timeshigher than that in the deep soil （ 150-200cm ） due to the influence of industrial and agricultural activities.Bounded form analysis showed that the proportion of exchangeable form of Cd was as high as 18% ，with outstandingbioavailabilityand significant environmental risks.And Pb mainly existed in the bounded form of iron and manganese oxides（ 40% ），which iseasilyactivated and migrated under acidic conditions.

Key WordsSoil heavy metals;Bounded form characteristics;Vertical distribution law;Xingyang City

土壤作为生态系统的重要组成部分，承载着物质循环、作物生长及污染物的自然净化功能[1]。（剩余6885字）