A power law fit is satisfactory for a pedotaxa(S)-area(A) relationship in Nanjing and is S=0.7284A 0.5922 . Thus, in Nanjing there exist taxa-area positive correlations.

• 土壤类型数(S)与面积(A)是幂函数关系；其最佳回归拟合方程为S=0.；7284A0