Source data of '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.

本数据集为研究《全球红树林土壤有机碳来源评估及其对蓝色碳汇信用的启示》的配套源数据。本数据集基于Web of Science数据库，通过关键词组合"mangrove C* source"、"mangrove isotope"、"mangrove source"进行检索筛选，共纳入100项研究、441组观测数据，包含全球红树林沉积物的同位素（δ¹³C、δ¹⁵N）及氮碳比（N/C）数值。该数据集需满足以下三项遴选标准：（1）需报告用于计算有机碳（OC, Organic Carbon）来源的相关参数，即δ¹³C与N/C，或δ¹³C与δ¹⁵N；（2）研究需发表于同行评议学术期刊；（3）实验需为自然条件下的野外实地研究，未施加人工干预。此外，本研究从检索所得文献中收集了红树林组织、河流颗粒有机质（POM, Particulate Organic Matter）、浮游植物及微藻的同位素与N/C数值，用于构建红树林端元、陆源端元及海源端元。鉴于已发表的浮游植物与大型藻类的δ¹³C、δ¹⁵N及N/C数值重叠度较高，故将二者合并为单一有机碳来源。本数据集可用于基于R语言实现的双示踪稳定同位素混合模型MixSIAR（MixSIAR）开展红树林有机碳来源识别研究，该模型是当前较为先进的贝叶斯混合模型之一。