Fig. 3From: Tree and shrub richness modifies subtropical tree productivity by regulating the diversity and community composition of soil bacteria and archaeaPairwise correlation matrix of environmental factors with Mantel tests of bacterial and archaeal communities. Red and blue lines indicate positive and negative correlations, respectively, while solid and dashed lines indicate the significant correlations (p < 0.05) and insignificant correlations (p > 0.05)Back to article page