运用国际土壤系统分类的有关原理和方法，选择土层特征、土壤基本特性和土壤矿物学特性这三类指标作为成都平原典型土系划分的依据，重点概述了蒲江样区的光明系、敦厚系两个土系。研究表明：新的土壤基层分类根据土壤本身的属性，以诊断层和诊断特性作为诊断指标，因而具有定量化、标准化、国际化和实用化的特点，比之传统的土壤发生分类方法更科学并更具广泛的应用前景。

In this paper, the typical soil series in Chengdu Plain were divided on the base of taxonomic principles and methods of World Soil Taxonomy, and three indexes including soil layer characters, soil basic characters and soil mineralogical characters were chosen as the foundations of classification. In addition, Guangming series and Dunhou series of Pujiang typical region wer introduced significantly. The results indicated that the new soil basic taxonomy, according to soil characters itself and using diagnostic horizon and diagnostic characters as the diagnostic indexes, has more scientific meanings and wide use prospect than traditional genetic classification.