A global assessment of mangrove soil organic carbon sources and implications for blue carbon credit

This is the source data of research entitled 'A global assessment of mangrove soil organic carbon sources and implications for blue carbon credit'. This source data contains isotope (δ13C, δ15N) and N/C values of global mangrove sediments from the Web of Science using combinations of keywords “mangrove C* source”, “mangrove isotope”, “mangrove source”, utilizing 100 studies and 441 observations. The database should meet the following requirements: (1) parameters that used to calculate the OC sources should be reported (either δ13C and N/C or δ13C and δ15N); (2) the work must have been published in peer-reviewed publications; (3) the study must have been a field study in natural conditions without artificial manipulation. Besides, from the literature, we collected isotope and N/C values for mangrove tissues, riverine POM, phytoplankton, and microalgae to generate mangrove, terrestrial and marine endmembers. Phytoplankton and macroalgae were combined as a single OC source since their published δ13C or δ15N and N/C were largely overlapped. This dataset is used in mangrove OC source identification using two-tracer stable isotope analysis in R (MixSIAR), one of the more modern Bayesian mixing models.