中国白浆土研究——Ⅰ.白浆土机械组成特点及元素地球化学分异特征
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

*国家自然科学基金


STUDY ON ALBIC SOILS IN CHINA——Ⅰ. MECHANICAL COMPOSITION AND GEOCHEMICAL ELEMENTAL VARIABILITY
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    本文对采自我国白浆土主要分布区的四个典型剖面的机械组成,化学性质及元素地球化学分异特征进行了研究。结果表明,所研究的四个剖面从以>0.002mm的颗粒为基础计算的非粘粒粒径在剖面中的分布、土壤的硅铝率、铝钾镁率以及以非粘粒为基础计算的土体TiO2含量来衡量,母质是同源的;在成土过程中,粘粒由白浆层向淀积层淋淀,形成了两层在机械组成上的“双层性”,而不是母质两次沉积的结果;元素地球化学分异特征是:SiO2和MnO在白浆层中富集,Fe2O3在淀积层中富集,Al2O3的富集因成土条件不同而异;Fe2O3、MnO、Al2O3反TiO2向粘粒中富集,SiO2向粗颗粒中富集;白浆土中粘土矿物似有微弱的破坏作用。

    Abstract:

    Four typical profiles of albic soils from the maim distribution areas in China were collected to study for mechanical composition,chemical properties and geochemical elemental vanability of albic soils.The main results are summarized as follows:1.The particle size distribution of the non-clay fraction and soil TiO2 content calculaced on the basis of >0.002 mm soil particles,the SiO2/A12O3 of soil and A12O3(K2O-I-MgO) of non-clay fraction proved that each profile has a uniform parent material 2.The mechanical composition of albic soil has a property of "double layers".The argillic horizon contains much more clay than the albic horizon.The ratio of clay in the argillic horizon to that in the albic horizon is >1.2.3.During the soil-forming process,clay moves from the albic horizon to argillic horizon,which,rather than the lithologically uncononuous deposition of parent material,results in the "doublo layersf9"double layers".4.The Properties of geochemical elemental variability are that SiO2 and MnO were enriched in the albic horizon while FezOs in the argillic horizon;Fe2O3,MnO,TiO2 and Al2O3 were enriched in caay,but SiO2 in the non-clay fraction.

    参考文献
    相似文献
    引证文献
引用本文

律兆松,徐琪.中国白浆土研究——Ⅰ.白浆土机械组成特点及元素地球化学分异特征[J].土壤学报,1993,30(3):274-288. L&#; Zhaosong, Xu Qi. STUDY ON ALBIC SOILS IN CHINA——Ⅰ. MECHANICAL COMPOSITION AND GEOCHEMICAL ELEMENTAL VARIABILITY[J]. Acta Pedologica Sinica,1993,30(3):274-288.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2013-02-25
  • 出版日期: