Fig 1 Explanatory factors associated with features of the fungal-plant network in individual (a& b ) and aggregate (c ) (Only the top three factors are shown to be formally significant). (a ) Random forest analysis showing influences on number of fungal OTUs linked to each plant species, number of edges and modularity of plant-fungi network. (b ) The heatmap of spearman correlation coefficients between the network features and environmental factors. (c ) The explained variation values were estimated with the multiple regression on distance matrices analysis. The results showed that plant species richness is the most important predictor for plant-fungi network topological features. MAP, mean annual precipitation; MAT, mean annual temperature; CNratio, carbon: nitrogen; SM, soil moisture; STP, soil total phosphorus; SOC, soil organic carbon. *P < 0.05, **P < 0.01, ***P < 0.001.