黄土区土壤腐殖物质的化学性质及其与成土条件的关系
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THE CHEMICAL PROPERTIES OF HUMIC SUBSTANCES OF SOILS IN LOESSIAL AREA IN RELATION TO SOIL FORMATION CONDITIONS
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    摘要:

    土壤腐殖质是土壤发生、发育的结果,是土壤区别于成土母质的主要标志。特定的生物气候条件(以及其它成土条件)形成特定的土壤类型,也形成具有特定性质的土壤腐殖质。因此,研究土壤中腐殖物质的组成、特性可以在一定程度上估计土壤生物活动的强弱与成土过程的趋向,从而为土壤分类提供重要的依据。

    Abstract:

    Humic substances extracted from soils in loessial area where the annual precipitation and evaporation ranged from 340-800 mm and 720-2500 mm respectively were investigated by elemental analysis, x-ray diffraction, paper electrophoresis and infra-red spectrophotometry. Results obtained showed that the aromaticity and mobility of humic acid varied regularly with climatic conditions under which the soils formed. The drier the climatic conditions under which the soils formed, the higher aromaticity and lower mobility of humic acid. Among the humic acid of the soils studied, that extracted from ortho loessial soil had the highest aromaticity and the lowest mobility, while that extraded from yellow cinnamon loessial soil had the lowest aromaticity and the highest mobility.

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罗贤安.黄土区土壤腐殖物质的化学性质及其与成土条件的关系[J].土壤学报,1981,18(4):353-359. Luo Xian-an. THE CHEMICAL PROPERTIES OF HUMIC SUBSTANCES OF SOILS IN LOESSIAL AREA IN RELATION TO SOIL FORMATION CONDITIONS[J]. Acta Pedologica Sinica,1981,18(4):353-359.

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  • 在线发布日期: 2013-02-25
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