A dataset for soil organic carbon in agricultural systems for the Southeast Asia region

Dataset includes the following files: 1- “SOC_database.xlsx” includes the data. The "SOC" sheet included data collected on soil organic carbon, while the "Biomass" sheet included data collected on biomass or yield of harvestable organs of different crops. 2- “Metadata.docx" includes a summary defining each column, trait collected in the data and the units for each variable. 3- “References.docx” contains all the references of the articles included in the dataset. 4- “Code.zip” includes additional datasets ('soc_tillage_fertilization.xlsx' and ‘rice_soc.xlsx’) and the scripts to produce the figures presented in this study. “SOC_database.xlsx” contains information systematically collected from selected published articles (see materials and methods). The data presented in sheet "SOC" can be divided into three sections: The first section referred to information inherent to the published article (id, authors, year of publication). The second section included information inherent to the experiment (location, experimental design, number of replications, name of treatments applied, length of SOC assessment). The third section presented the information collected on soil organic carbon and organic matter content, and soil bulk density (values, units, and laboratory method used to determine carbon). Finally, the crops that were present during the experiment were shown and comments were added to clarify some specific aspects of the experiment. The data presented in sheet "Biomass" can be divided into three sections: The first section in which information inherent to the published article was reported (id, authors, year of publication). The second section presented information related to the experiment (year of experimentation, number of replications, name of the treatments applied, and the crop evaluated in the experimentation). The third section presented the information collected on aboveground biomass, harvestable organ yield, and crop residues (values, units, and laboratory method used to determine soil organic carbon). Finally, comments were made clarifying the moisture content of the harvestable organ yield in those published articles that reported this variable.