Salt marsh ecosystems are a typical type of “blue carbon” ecosystem, and their carbon sequestration function plays an important role in mitigating global climate change. Long-term and continuous carbon flux observations are crucial for accurately assessing the carbon sink capacity of salt marshes and predicting their potential responses under climate change conditions. However, the current lack of long-term monitoring data for these ecosystems limits in-depth investigations into their carbon sink functions. Therefore, high-quality, long-term datasets are urgently needed to support related studies. Since 2011, the Yellow River Delta Ecological Research Station of Coastal Wetland, Chinese Academy of Sciences, has conducted continuous monitoring of carbon exchange processes in the salt marsh ecosystem of the Yellow River Delta using the eddy covariance technique. a substantial amount of multi-year high-quality carbon flux observation data has been accumulated. This dataset compiles carbon flux observations in the salt marsh ecosystem of the Yellow River Deltafrom 2012 to 2020 and provides data products at two high temporal resolutions: half-hourly and daily. It includes net ecosystem exchange of CO 2 (NEE), gross primary productivity (GPP), and ecosystem respiration (ER). The CO2 flux data in this dataset have been fully processed through standardized procedures, including quality control, gap filling, and partitioning. The annual average retention rate of raw data reaches 53%, also demonstrating the high quality of this dataset. The dataset offers reliable support for related research and contributes to a deeper understanding of carbon exchange processes in salt marsh ecosystems.
WEI et al. (Sun,) studied this question.