Fig. 3

Relationships between the β value and soil properties. Relationship between the β value and recalcitrance index (RI, a), total nitrogen (TN, b), available nitrogen (AN, c), soil pH (d), soil organic carbon (SOC, e), microbial biomass carbon (MBC, f), carbon to nitrogen ratio (C/N, g), mean weight diameter (MWD) of soil aggregates (h) and soil water content (SWC, i)