The Willis curves show that Chinese Soil Taxonomy has a more regular structure, which is probably related to difference in classification ideology between the two scientific disciplines.

• 从威利斯曲线可以看出，中国土壤系统分类较垫刃亚目分类体系具有更规则的结构，这一特征可能与两种学科中不同的分类理念有关。