Figure 6 | Scientific Reports

Figure 6

From: Molecular composition of soil organic matter (SOM) regulate qualities of tobacco leaves

Figure 6The alternative text for this image may have been generated using AI.

Van Krevelen diagrams of common SOM formulas. (a) Common formulas in high-quality soils. (b) Common formulas in low-quality soils. Different colors indicate common fractions between two or three samples. Different numbers on dotted box in high represent different compounds that are appropriate for both figures: ① Lipids, ② Proteins, ③ Amino Sugars, ④ Carbohydrates, ⑤ Unsaturated hydrocarbons, ⑥ Lignin, ⑦ Tannins, ⑧ Condensed hydrocarbons.

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