古土壤地球化学的某些问题——黄土风化过程中元素的变化
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ON THE GEOCHEMICAL CHARACTERISTICS OF PALEOSOL——THE CHANGE OF CHEMICAL ELEMENTS IN LOESS DURING WEATHERING PROCESS
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    摘要:

    对黄土中埋藏古土壤的研究有过许多报道[2,5,8].但对黄土风化过程中元素的变化讨论则不多.笔者是在近年来对陕西洛川黄土剖面工作的基础上,讨论了不同类型古土壤中元素的含量与分布,古土壤剖面中元素的变化.并将古土壤的化学组成与黄土母质进行比较,进而论述了在古气候变迁的影响下,黄土剖面中元素迁移、积聚的地球化学特征.这对探讨黄土的堆积环境和生物气候条件的演变,以及地层划分等均有十分重要意义.

    Abstract:

    This paper deals mainly with the content and distribution of chemical elements in different types of paleosol in loessial section of Luochuan, and the geochemical characteristics of elements in their translocation or accumulation process during process of soil formation from loess to paleosol. Comparing with parent material (loess), the average contents of Al, Fe3+ and K of the paleosol are higher than those of loess; whereas the average contents of Ca, Fe2+ and Na are lower than those of loess. The contents of AI, Fe3+, K in paleosol profile increase from bottom upward, and the highest value appears in the argillic layer, but the CaCO3 content is lowest and caliche horizon is evident.

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孙福庆,文启忠,刁桂仪,余素华.古土壤地球化学的某些问题——黄土风化过程中元素的变化[J].土壤学报,1983,20(2):101-111. Sun Fuqing, Wen Qizhong, Diao Guiyi, Yu Suhua. ON THE GEOCHEMICAL CHARACTERISTICS OF PALEOSOL——THE CHANGE OF CHEMICAL ELEMENTS IN LOESS DURING WEATHERING PROCESS[J]. Acta Pedologica Sinica,1983,20(2):101-111.

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  • 在线发布日期: 2013-02-25
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