Table 2. Stepwise linear regression models showing the correlations between the bacterial average MIC from each soil and the soil factors (based on the data of the 11 soil samples).

(R2 = 0.9298a, p<0.01)
Variable	Coefficient	Std Error	P	VIFb
Constantc	606.605	184.833	0.0112	1.1
Cu	0.24128	0.04759	0.0010	1.1
Sb	0.14533	0.01273	0.0000

^aR² = 0.9298 or 0.6467 shows that the average MIC was significantly correlated with the soil characters (R²>0.362, significant correlation, [32]); ^b variance inflation factor; ^c intercept. The MIC_Sb(III) and MIC_Cu(II) are the average bacterial MIC for the metal of each soil (µM), and the C_Sb, C_Cu, C_S and C_P are the soil concentrations for Sb, Cu, S and P (mg/kg), respectively.