Aridification Inhibits the Release of Dissolved Organic Carbon from Alpine Soils in Southwest China DOI Creative Commons
Yanmei Li, Jihong Qin, Yuwen Chen

и другие.

Soil Systems, Год журнала: 2025, Номер 9(1), С. 24 - 24

Опубликована: Март 6, 2025

The alpine peatlands in western Sichuan Province are currently experiencing aridification. To understand the effects of aridification on characteristics organic carbon release from soils, soil northwest Plateau was investigated. Soil columns were incubated under different moisture conditions situ and laboratory, ultraviolet-visible absorption spectroscopy three-dimensional fluorescence used to assess dissolved (DOC) levels. results revealed that (1) cumulative DOC decreased with decreasing content. laboratory (0–5 cm reached 1.93 ± 0.43 g/kg) greater than 1.40 0.13 g/kg); (2) 0–5 exhibited greatest response changes water content, layer (1.40 5–15 (1.25 0.03 (3) UV-visible spectra 3D spectral indicated increases content chromophoric matter (CDOM) components strong hydrophobicity, especially tyrosine (surface increased 39.59~63.31%), DOC. This increase hydrophobic CDOM enhances aromaticity degree humification Our drought inhibits DOC, which is unfavorable for sequestration potentially resulting loss pools further degradation ecosystem functions.

Язык: Английский

Aridification Inhibits the Release of Dissolved Organic Carbon from Alpine Soils in Southwest China DOI Creative Commons
Yanmei Li, Jihong Qin, Yuwen Chen

и другие.

Soil Systems, Год журнала: 2025, Номер 9(1), С. 24 - 24

Опубликована: Март 6, 2025

The alpine peatlands in western Sichuan Province are currently experiencing aridification. To understand the effects of aridification on characteristics organic carbon release from soils, soil northwest Plateau was investigated. Soil columns were incubated under different moisture conditions situ and laboratory, ultraviolet-visible absorption spectroscopy three-dimensional fluorescence used to assess dissolved (DOC) levels. results revealed that (1) cumulative DOC decreased with decreasing content. laboratory (0–5 cm reached 1.93 ± 0.43 g/kg) greater than 1.40 0.13 g/kg); (2) 0–5 exhibited greatest response changes water content, layer (1.40 5–15 (1.25 0.03 (3) UV-visible spectra 3D spectral indicated increases content chromophoric matter (CDOM) components strong hydrophobicity, especially tyrosine (surface increased 39.59~63.31%), DOC. This increase hydrophobic CDOM enhances aromaticity degree humification Our drought inhibits DOC, which is unfavorable for sequestration potentially resulting loss pools further degradation ecosystem functions.

Язык: Английский

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