Data underlying publication: Vegetation types shift physiological and phenological controls on carbon sink strength in a coastal zone

This dataset accompanying this publication includes eddy covariance and meteorological data collected from three distinct vegetation sites in the Yellow River Delta, spanning 2011–2022. The sites represent tidal wetland, nontidal wetland, and cropland ecosystems, with long-term measurements of net ecosystem exchange (NEE) of CO2, air temperature (Tair), precipitation (PPT), global radiation (Rg), vapor pressure deficit (VPD), and evaporative fraction (EF). The raw data provides original flux measurements, while the processed data has undergone rigorous procedures, such as despiking, coordinate rotation, frequency response loss correction, and gap filling, ensuring its usability for further analysis. The dataset serves as a foundation for analyzing the physiological and phenological mechanisms that regulate carbon cycling across coastal vegetation types.

This study revealed that although all studied vegetation types consistently acted as stable carbon sinks, their carbon sequestration capacities were influenced by distinct physiological (seasonal peaks of net CO2 uptake and release rate) and phenological (CO2 uptake period length) factors, both of which were regulated by dominant local climatic variables.