Fig. 3

Carbon physiological spectrum and metabolic fingerprint of soil microbial community in the Calamagrostis angustifolia wetland of the Sanjiang Plain. Carbohydrate, B2–D-xylose, H1–α-D-lactose, A2–β-methyl-D-glucoside, G2–α-D-glucose-1-phosphate, E1–α-cyclodextrin, F1–glycogen, G1–D-cellobiose; amino acids, A4–L-arginine, B4–L-asparagine, C4–L-phenylalanine, D4–L-serine, E4–L-threonine, F4–glycyl-L-glutamic acid; esters, B1–pyruvic acid methyl ester, C1–tween 40, D1–tween 80, A3–D-galactonic acid-γ-lactone; alcohols, C2–i-erythritol, D2–D-mannitol, H2–D, L-α-glycerol phosphate; amine, G4–phenylethyl-amine, H4–putrescine, E2–N-acetyl-d-glucosamine; acids, B3–D-galacturonic acid, F2–D-glucosaminic acid, C3–2-hydroxy benzoic acid, D3–4-hydroxy benzoic acid, E3–γ-hydroxybutyric acid, F3–itaconic acid, G3–α-ketobutyric acid, H3–D-malic acid