Chemical dark matter reveals hidden soil carbon chemistry under whole-soil warming
Description
This dataset contains molecular feature tables for assigned dissolved organic matter (ADOM) and dark dissolved organic matter (DDOM) obtained from an eight-year in situ whole-soil warming experiment on the Tibetan Plateau. Soil samples were collected from control and warming plots across four soil depths (0–10, 10–30, 30–60, and 60–100 cm) and characterized using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). ADOM comprises high-quality mass-spectral features assigned to chemically plausible molecular formulas containing C, H, O, N, S, and P, whereas DDOM comprises high-quality features that remained unassigned after the same calibration, blank-removal, signal-to-noise, mass-error, and formula-assignment procedures.
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Institutions
- Peking UniversityBeijing, Beijing