Figure 6.

Mantel test correlation between soil aggregate structure, soil chemical properties, and microbial communities. DMWD, dry-sieved mean weight diameter; DGMD, dry-sieved geometric mean particle size; WMWD, wet-sieved mean weight diameter; WGMD, wet-sieved geometric mean; pH, particle size; EC, electrical conductivity; OM, organic matter; OC, organic carbon; TN, total nitrogen; ${\text{NH}}_4^{+}$-N, ammonium nitrogen; ${\text{NO}}_3^{-}$N, nitrate nitrogen; TP, total phosphorus; AP, available phosphorus; TK, total potassium; AK, available potassium. The statistical significance of the differences between groups is marked with asterisks: *p < 0.05, **p < 0.01, ***p < 0.001.