| N | Nitrogen |
| SOC | Soil Organic Carbon |
| POC | Particulate Organic Carbon |
| MAOC | Mineral-Associated Organic Carbon |
| CK | Control |
| MBC | Microbial Biomass Carbon |
| MBN | Microbial Biomass Nitrogen |
| TN | Total Nitrogen |
| DOC | Dissolved Organic Carbon |
| DON | Dissolved Organic Nitrogen |
| rTCA | Reductive Tricarboxylic Acid |
| GH | Glycoside Hydrolase |
| CE | Carbohydrate Esterase |
| AA | Auxiliary Activities |
| pSEM | Piecewise Structural Equation Modeling |
| PCA | Principal Component Analysis |
| PCoA | Principal Coordinate Analysis |
| PLS-DA | Partial Least Squares–Discriminant Analysis |
| PL | Polysaccharide Lyase |
| CBB | Calvin–Benson–Bassham |
| WL | Wood–Ljungdahl |
| 3-HP | 3-Hydroxypropionate |
| 4-HB | 4-Hydroxybutyrate |
| CUE | Carbon Use Efficiency |
| CAZy | Carbohydrate-Active enZymes |
| KEGG | Kyoto Encyclopedia of Genes and Genomes |