中国土壤系统分类中土族划分的典型研究

Soil Family in Chinese Soil Taxonomic Claasification

选择我国北亚热带地区归属湿润淋溶土的22个土壤剖面为研究对象，研究了中国土壤系统分类中土族的划分依据和指标。指出，土族的划分应以土壤本身的性质为依据；反映土壤理化性质并影响土壤利用管理的颗粒大小级别、矿物学类型和土壤温度级别是理想的土族分类标准；土族命名要以这些属性名称加亚类名称连续命名，以准确地反映土壤的性质和分类地位。

This paper illustrates the result of studies on 22 soil profiles which distributed in the North-subtropical region. These soil samples belong to Udic Luvisol according to Chinese Soil Taxonomic Classification. Three soil characteristics are selected as family classification criteria. They are particle-size class, soil mineralogical type and soil temperature regime. The 22 soil profiles fall into 18 families, 8 subgroups and 5 great groups.