Table 2.

Correlations between soil microbial communities and soil humus.

	WSS (g/kg)	FA (g/kg)	HA (g/kg)	HM (g/kg)	SOC (g/kg)
Proteobacteria	0.280	0.247	0.104	−0.088	0.016
Actinobacteria	−0.292	−0.689**	−0.560**	−0.334	−0.520**
Bacteroidetes	0.061	−0.220	−0.262	−0.248	−0.249
Acidobacteria	0.474*	0.863**	0.760**	0.391	0.628**
Gemmatimonadetes	−0.441*	−0.664**	−0.601**	−0.182	−0.407*
Planctomycetes	−0.376	−0.065	0.031	0.075	0.054
Firmicutes	−0.273	−0.088	0.034	0.309	0.182
Chloroflexi	0.162	−0.390	−0.420*	−0.660**	−0.603**
Ascomycota	−0.482*	−0.564**	−0.504*	−0.279	−0.413*
Mortierellomycota	0.661**	0.835**	0.726**	0.374	0.605**
Basidiomycota	−0.320	−0.370	−0.313	0.029	−0.145

^* and ^** indicate significance at 0.01 <p < 0.05 and 0.001 <p < 0.01 respectively.

WSS, water-soluble organic matter; FA, fulvic acid; HA, humic acid; HM, humin; and SOC, soil organic carbon.