昆明地区不同母质对红壤发育的影响
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EFFECT OF PARENT MATERIALS ON THE GENESIS AND CLASSIFICATION OF RED SOILS IN KUNMING DISTRICT, YUNNAN
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    摘要:

    昆明地区位于云南省中部,为我国西南高原红壤的主要分布区。关于本区土壤形成过程及发生分类等同题,虽然曾有人做过不少工作,但至今仍存在着一些分歧;有人认为本区土壤的形成过程以砖红壤化为主,土壤类型为砖红壤及铁质砖红壤性土[1,2];有人认为棕壤化为本区土壤的主要成土过程,土壤应命名为棕色森林土[4];另有人认为本区土壤属红壤,目前的成土过程为红壤化[5],所有这些意见,均因资料不足而难取得统一。

    Abstract:

    The weathering sequency of clay minerals is usually regarded as one of the important indexes for the classification of genetic soil groups. After a detailed review on literatures concerning tropic soils it is found that a great deal of confusion has been made in this respect. Actually some red soils are derived from highly weathered materials of earlier geological ages, and they inherit their clay minerals largely from old ferruginous crust. Others are young residual soils derived directly from various parent rocks. Composition of clay minerals of the latter soils reflects an incipient stage of present soil forming process. Soils having great diversity of SiO2/Al2O3 and SiO2/R2O3 ratios can be found in a restricted area in tropic and subtropic regions. Such divergent soil types were found in Kunming district, Yt}nnan through a detailed soil survey in 1958-1962.

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趙其国.昆明地区不同母质对红壤发育的影响[J].土壤学报,1964,12(3):253-265. C. K. CHAO. EFFECT OF PARENT MATERIALS ON THE GENESIS AND CLASSIFICATION OF RED SOILS IN KUNMING DISTRICT, YUNNAN[J]. Acta Pedologica Sinica,1964,12(3):253-265.

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  • 在线发布日期: 2013-02-25
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