中文摘要：

作为土壤系统分类的基层分类单元,土系的划分必须经过实地调查,重视控制层段和特征土层的设立,并选择合适的分异特性作为分类指标。本文选择样区内不同景观单元中的10个土壤剖面,根据中国土壤系统分类的要求,探讨了样区内土壤诊断层、诊断特性及其在中国土壤系统分类中的归属;并在有关土系认识的基础上,探讨了土系划分的原则、依据和具体划分方法,确立了研究区土壤所具有的特征土层,依据①特征土层的种类、排列、厚度,②土壤质地和③土壤有机质含量这三类指标,把样区土壤划分为10个土系。

英文摘要：

Soil series,the lower category unit of soil taxonomy,its classification should go through several indispensable processes,such as field investigations,establishment of control sections and characteristic horizons,and choice of appropriate differentiation characteristics as category indexes.This paper selected 10 soil profiles in different landscape units of sample area,then discussed soil diagnostic horizons,diagnostic characteristics and the positions of the soils in Chinese Soil Taxonomy according to Chinese Soil Taxonomy.And based on the understanding about soil series,this paper proposed the principles,basis and the specific method about soil series classification,established the characteristic horizons of the sample area,the soils were divided into 10 soil series.and according to three indicators：1） the type,arrangement,thickness of characteristic horizons,2） soil texture and 3） the content of organic matter.