第四纪红粘土发育的红壤基层分类及土壤组合型式
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THE CLASSIFICATION OF BASIC CATEGORIES AND ASSOCIATION PATTERNS OF RED EARTHS DERIVED FROM QUATERNARY RED CLAY
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    摘要:

    根据第四纪红粘土起源物的成因和属性及其对土壤发育特性影响的大小,在中亚热带丘陵地区可划分四个土属:(1)硅铁质残积红壤;(2)硅铁质红壤;(3)硅铁质网纹红壤;(4)硅铁质砾石红壤.划分土种的原则方案是:(1)同土属内土体构型相同的土壤;主要根据表层肥力的量级差异划分土种;(2)土体构型不同的土壤,无论表土层的肥力状况如何,都应划分为不同土种;(3)耕种红壤土种的划分,主要视改土培肥及耕作管理措施的强度及其表现在耕作层(含亚耕层)的熟化度高低所决定.低丘地区常见的红壤组合型式有:(1)完整迭合弱侵蚀型;(2)残留链状弱侵蚀型;(3)倒置加积强侵蚀型;(4)斑状水化平直型;(5)垄沟状强侵蚀型;(6)同源母质对称型;(7)异源母质对称型;(8)异源母质带状覆盖型;(9)环状侵蚀型.

    Abstract:

    According to the causes吐formation and properties of Quaternary red clay and their influences on red earths developed on it in the hilly regions of central subtropical China, the soils are distinguished into four families, i.e. siferryc residual red earths, siferric red earths, siferric plinthie red earths and siferric gravel red earth. The principles for distingushing the red earths in the category of soil species suggested by the eauthor are as follows:(1)in a given family with same pattern of solum stracture, the soil species are distinguished according to the fertility level of surface soil;(2) the soils with different patterns of solum structure are distinguished in different soil apecies in spite of soil fertility;(3) for cultivated soils, the soil species are distinguish according to the development deb}ree of surface and subsurface mil horizons resulting from fertilization and management of the soil. The association patterns of red earths being generally found in hilly regions of central China a} as follows:(1) weakly Proded pattern with all horizons overlaped, (2) weakly eroded,pattarn with residual catena, (3) strongly eroded cumulative pattern with apposite distributive order on the slope,(4) patch-like pattern with stronge hgdratian of iron oxides on gentle slopes, (5) strongly eroded gully-like pattern, (6) lithological symmetrical distributive pattern with hombgenous parent material, (7) lithological symmetrical distributive pattern with heterogemeous parent materials, (8) litholoaical belt-like covering pattern with heterogeneous parent materials, (9) eroded-annular distributive pattern.

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周明枞.第四纪红粘土发育的红壤基层分类及土壤组合型式[J].土壤学报,1985,22(4):365-376. Zhou Mingcong. THE CLASSIFICATION OF BASIC CATEGORIES AND ASSOCIATION PATTERNS OF RED EARTHS DERIVED FROM QUATERNARY RED CLAY[J]. Acta Pedologica Sinica,1985,22(4):365-376.

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  • 在线发布日期: 2013-02-25
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