山东省五莲县表层土壤安全性评价与预测
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Safety Assessment and Predication of Surface Soil in Wulian County in Shandong Province
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    摘要:

    为揭示山东省五莲县表层土壤重金属累积规律及环境风险演变趋势,基于2008年和2018年两期地球化学调查数据,综合运用特征值统计、克里金空间插值、累积速率模型计算及环境质量评价图对比等方法,系统分析了10年尺度五莲县表层土壤各重金属元素变化范围和幅度。结果表明:研究区土壤重金属呈普遍累积趋势,Cd、Cu、Hg、Pb、Zn累积速率显著,其中Cu增幅范围最广,Hg增幅强度最大,主控因素为矿山开采与地质高背景。通过土壤重金属累积速率计算,预测2028年,研究区表层土壤重金属元素含量呈现不同程度上升,其中Cd元素环境质量降级最显著,Pb、Zn在户部乡、松柏镇周边将形成轻微风险区,土壤环境质量等级相应有所降低,相关部门应引起重视。

    Abstract:

    In order to reveal accumulation patterns and the evolutionary trends of associated environmental risks of heavy metals in surface soil of Wulian county in Shandong province, based on geochemical survey datasets in 2008 and 2018, by using descriptive statistical analysis, accumulation rate calculation and comparative evaluation of geochemical maps, the variations in concentration ranges and magnitudes of heavy metal elements in surface soil over a 10 year period have been analyzed. It is indicated that the soil heavy metals in the research area show a general accumulation trend, accumulation rates of Cd, Cu, Pb and Zn is obvious. Cu has the widest range of amplification, and Hg has the strongest amplification intensity. Main controlling factors are mining and high geological background. By calculating the accumulation rate of heavy metals in the soil, it is predicated that by 2028, the content of heavy metal elements in the surface soil of the study area will increase to varying degrees. Among them, the environmental quality degradation of Cd element is the most significant, while Pb and Zn will form a slight risk area around Hubu town and Songbai town. The soil environmental quality level will correspondingly decrease, and relevant departments should pay more attention to it.

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王延浩,朱江源,麻国龙,闫早华,周立国,张晓闯,杨本固.山东省五莲县表层土壤安全性评价与预测[J].山东国土资源,2025,41(8):

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  • 在线发布日期: 2025-07-30