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Fig. 2. Correlation of NMR and thermogravimetry (TG) results for free light fraction–soil organic matter (FLF–SOM) and intra-aggregate light fraction–soil organic matter (IALF–SOM) samples under all three land uses (a) Exo1 and O-alkyl C (b) Exo2 and aromatic C, and (c) Exo1 and O-alkyl/alkyl ratio.