葫芦岛市土壤磁化率与重金属元素分布规律及其相关性研究
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Distribution of soil magnetic susceptibility and heavy metal elements and their correlativity in Huludao City
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    摘要:

    通过对 185 个地表土样、4 个剖面土样的磁参数与化学分析测试,对葫芦岛市土壤磁化率与重金属元素分布规律、成因及两者的相关性进行了研究。结果表明:①研究区表层土壤磁化率值高低悬殊,部分土样明显超过一般棕壤的正常磁化率值。并且其基本理化性质的值均在正常范围以内,说明还有其他因素对土壤磁化率产生影响。②剖面土壤磁化率值与重金属元素含量总体上均呈向下递减的相同趋势。土壤重金属元素含量与土壤磁化率值垂向变化特征基本一致。③研究区土壤磁化率值与重金属元素 Pb、Zn、Hg、Ni 的含量呈极显著正相关,与 Cu 的含量呈显著正相关。且土壤磁化率值与 Pb 含量的相关性在 Pb 含量达到污染的地区呈极显著正相关,反之则不显著,这有力说明过量的重金属 Pb 很可能对土壤磁化率产生影响。

    Abstract:

    Based on the data of magnetic parameters and chemical analyses of 255 samples (185 from surface soils and other from 4 soil profiles), the distributions of soil magnetic susceptibility, heavy metal element contents,their origins and correlation were studied in Huludao City. The result revealed that: ①the magnetic susceptibility of the surface soils had obvious divergence, some were higher than those of common brown soil, but their basic physical and chemical properties were still within the normal ranges, thus, it suggested that the magnetic susceptibility may be promoted by others factors. ②both the magnetic susceptibility and heavy metal element contents decreased downwards in soil profiles, sharming the same vertical variation tendency. ③there were extremely significant correlations between the magnetic susceptibility and the contents of Pb, Zn, Hg, and Ni, significant correlation between the magnetic susceptibility and the contents of Cu. In Pb-polluted area, there was extremely significant correlations between the magnetic susceptibility and Pb content, but no correlation in non-Pb polluted area, it effectively proved that Pb may increase the magnetic susceptibility.

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依艳丽,谷微微,张大庚,栗杰.葫芦岛市土壤磁化率与重金属元素分布规律及其相关性研究[J].土壤,2008,40(5):806-811. YI Yan-li, GU Wei-wei, ZHANG Da-geng, LI Jie. Distribution of soil magnetic susceptibility and heavy metal elements and their correlativity in Huludao City[J]. Soils,2008,40(5):806-811

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