湖南两个小流域土壤中铝和铁的形态分布及其相关性研究
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国家教育部(教技司[2000]156-00209)和挪威国家科学研究理事会资助。


DISTRIBUTION OF Al(Fe)-POOLS IN TWO SMALL CATCHMENTS IN HUNAN
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    摘要:

    分别在湖南的郴州和长沙选定两小流域(SZY和LKS),从小流域规模分析了酸雨频降区两小流域土壤的主要理化特性和土壤Al、Fe形态。结果表明:在小流域SZY土壤中,各种形态的Al、Fe含量均高于小流域LKS土壤中对应形态的Al、Fe含量;在同一剖面,各种形态的Al、Fe含量有表土高于底土的趋势。两小流域土壤中,除Feox外各种形态的Al、Fe均与土壤有机质呈正相关,酸沉降能影响Al、Fe形态的转化和淋溶。酸沉降影响Al、Fe的溶出可能是通过形成可溶性的有机物-Al、Fe的复合物而从难溶性Al、Fe转化而来。土壤中各种形态的Al与对应形态的Fe呈线性正相关,酸沉降增加了毒性元素Al的溶出,同时也可能增加营养元素Fe的有效性。

    Abstract:

    Soil Al(Fe)-pools and basic properties of the forest soils gathered from five profiles (consisting of four horizons) in two catchments (SZY and LKS) in Hunan were determined. Al-and Fe-pools were higher in SZY than in LKS and generally higher in the top soils than in the subsoils. They, except Feox, were positively correlated to the content of soil organic matter in the two catchments. Acid deposition may affect transformation and leaching of soil Al and Fe through formation of soluble organo-metal complexes. Significant positive correlations were observed between various forms of Al and their corresponding forms of Fe in the soils. Moreover, acid deposition also increased leaching of toxic Al and possibly availability of nutrient Fe.

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薛南冬,廖柏寒.湖南两个小流域土壤中铝和铁的形态分布及其相关性研究[J].土壤,2004,36(4):405-411. XUE Nan-dong, LIAO Bo-han. DISTRIBUTION OF Al(Fe)-POOLS IN TWO SMALL CATCHMENTS IN HUNAN[J]. Soils,2004,36(4):405-411

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  • 在线发布日期: 2017-05-20
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