Fig. 5

Redundancy analysis of the soil abiotic and biotic factors effect on enzyme activity and ecoenzymatic stoichiometry (a) and microbial resource limitation (c) .Envfit analysis identified key factors of enzyme activity and ecoenzymatic stoichiometry (b) and microbial resource limitation (d). Significance levels are as follows: *p < 0.05;**p < 0.01; ***p < 0.001.