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分層土壤中降雨驅動下重金屬遷移行為的層間擴散機制探討

Author

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  • 趙天宇

    (山西農業大學，山西 太原，030031)

Abstract

在長期重金屬污染條件下，分層土壤在垂直方向上表現出明顯差異，不同土層中重金屬逐漸累積。降雨作為主要的外部因素，會改變土壤孔隙中的水流狀態，使溶解態和絡合態重金屬在不同土層之間發生移動。本研究梳理了分層土壤結構和降雨入滲過程對重金屬遷移的影響，說明瞭對流移動、擴散作用、吸附與解吸過程以及指狀流動等多種過程之間的共同作用。通過理論模型分析發現，在降雨後期，濃度差引起的擴散仍然持續推動重金屬向深層土壤移動，並且在不同孔隙結構和降雨條件下，遷移速度和累積深度存在明顯差異。

Suggested Citation

  • 趙天宇, 2025. "分層土壤中降雨驅動下重金屬遷移行為的層間擴散機制探討," Explorations in Modern Science, Brilliance Publishing Ltd., vol. 1(2), pages 30-36, December.
    • Handle: RePEc:ctz:exmsci:v:1:y:2025:i:2:p:30-36
    DOI: 10.53104/xdkxts.2025.01.02.003
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