我国北亚热带白浆化土壤粘化过程的主组元分析

Main Component Analysis on Argillification of Albic Soils in Northem Subtropical Region of China

运用主组元分析方法，研究了白浆化土壤的粘化过程．认为粘粒的化学组成与粘粒的矿物组成相一致；在淋溶过程中，矿物分解可形成蒙脱石和高岭石，粘淀层是土体脱硅富铁铝化过程和粘粘形成、淋溶、淀积的结果．

Using the main component analysis,this paper deals with the argillification of the albic soils. It is concluded that the chemical composition of the clays relates to the mineral composition. The clay mineralogy feature shows that under the illuvial conditions, montmorillonite can change into kaolinite, and the formation of the argillic horizons involve two processes: one is the desilicification - allitization and argillification, and the second is the clay accumulation.