Freeze-thaw seasonal variations and environmental controls of CO₂ and CH₄ diffusive emissions from reservoirs in the upper Yellow River.

ABSTRACT: Reservoirs are significant sources of atmospheric carbon greenhouse gas (carbon dioxide [CO₂] and methane [CH₄]) emissions. This study analysed the seasonal emission patterns of CO₂ and CH₄ concentrations and diffusive fluxes from water bodies, along with the associated environmental controls, in the three large reservoirs of the upper Yellow River on the Tibetan Plateau. The results indicated that the soil thawing period represented a critical window for carbon greenhouse gas emissions from reservoirs (CO₂: 239.3 ± 94.4 mmol m^-2 d^-1 and CH₄: 201.1 ± 366.6 mmol m^-2 d^-1). Emissions of these gases from reservoirs were predominantly driven by photodegradation of organic carbon during

SUBMITTER: Li C 

PROVIDER: S-EPMC12494717 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature