Dissolved methane dynamics and isotopic source analysis in the Chongqing section of Yangtze River, Three Gorges Reservoir

Key Points

• This research aims to analyze dissolved methane dynamics and sources in the Three Gorges Reservoir.
• Isotopic analysis of methane sources and dynamics in the reservoir
• Field sampling conducted in the Chongqing section
• Assessment of methane emissions and carbon cycle interactions
• Identified major sources of methane emissions in the reservoir, showing significant impacts on the local carbon cycle.
• Found distinct isotopic signatures for methane sources within the Three Gorges environment.
• Demonstrated variations in methane concentration correlating with seasonal changes.