Fig. 8

The correlation analysis between soil environmental factors and bacterial relative abundance. a The correlation analysis between soil environmental factors and dominant bacterial relative abundance at phylum level. b The correlation analysis between soil environmental factors and significant different bacterial relative abundance at phylum level. The numbers display the Pearson’s correlation coefficient (r). Blue and red indicate positive and negative correlation, respectively. The color density and numbers reflect the scale of correlation. *Significant level (*P < 0.05; **P < 0.01; ***P < 0.001)