Fig. 4: Investigate the correlation between soil organic carbon and its predictors.

Heatmap of correlation between soil organic carbon and its predictors for A maize and B rice soil. MGP mean growing season precipitation, MGT mean growing season temperature, pH soil pH, SWC soil water content, NP soil nitrogen and phosphorus ratio, AP soil available phosphorus, MBC microbial biomass carbon, MNC microbial necromass carbon, FNC fungal necromass carbon, BNC bacterial necromass carbon, FBNratio the ratio of fungal necromass carbon to bacterial necromass carbon, BS bacterial Shannon index, FS fungal Shannon index, Network PC1 the first principal component of seven microbial topological properties, Network PC2 the second principal component of seven microbial topological properties, SOC soil organic carbon.