Fig. 3: Correlation between soil microbial community facets and their effects on soil microbial function.

Correlations between soil microbial community facets (A), and effect of soil microbial community facets on microbial functions (B). A Correlation matrix of soil microbial community facets: microbial biomass (i.e., “total biomass” and “active biomass”), taxonomic profile (i.e., bacteria to fungi ratio: “B:F”, bacteria Shannon diversity, and fungi Shannon diversity), functional profile (i.e., the abundance of catabolism functional genes: “Cata” and functional genes evenness: “FG evenness”). B Effects of microbial community facets on substrate-induced respiration efficiency and response range (i.e., “SIR efficiency” and “SIR range”, respectively), and microbial respiration. The explained variance (in %) of the model after model selection is displayed in the first row. The model variance partitioning between the different microbial facets (i.e., biomass, taxonomic and functional profile) is displayed in the second row. For each response variable (i.e., column), the circles are proportional to the part of explained variance and the intersects to the shared variance between two groups of variables. The last rows display the standardized effect sizes of the selected variables. The significance levels were standardized across the panels (“.”: p-value < 0.1., “*”: p-value < 0.05, “**”: p-value <0.01, and “***”: p-value < 0.001). l. Color scale. The colored bar represents both the correlation strength in A and the effect size of the microbial community facets in B both between −1 and 1.