Figure 3.
Relationships between soil AM fungal composition and environmental variables: (a) total AM fungi; (b) specialist AM fungi; (c) generalist AM fungi. SMC, soil moisture content; BD, soil bulk density; SOC, soil organic carbon content; TN, soil total nitrogen content; TP, soil total phosphorus content; AI, aridity index; PET, potential evapotranspiration; MAT, mean annual temperature; MAP, mean annual precipitation; PS, precipitation seasonality; NDVI, normalized difference vegetation index; PR, plant community richness.