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Relationship between soil microbial parameters and tree species richness. (A) BR (basal respiration), (B) GIR (active microbial biomass) expressed in μg C‐CO 2 g−1 soil hr−1, (C) qCO 2 (metabolic quotient; n = 4 replications for each identity plot for a total of 148 plots). The solid lines represent fitted regressions for the best model
