Pearson correlation coefficients between soil properties and MBC, WSOC, and AOC.

MAT, mean annual temperature (°C); MAP, mean annual precipitation (mm); WHC, water holding capacity (%); OC, organic carbon (%); T-N, total nitrogen (%); EC, electrical conductivity salinity (dS m−1); MBC, microbial biomass carbon (mg kg−1); WSOC, water soluble organic carbon (mg kg−1); AOC, assimilable organic carbon (mg kg−1) “+” indicates a positive correlation, “−” indicates a negative correlation,*denotes significant at the 0.05 level,***denotes significant at the 0.001 level.