Fig. 3: Maps of global SOC stock and related components.
From: Microbial carbon use efficiency promotes global soil carbon storage
The maps were obtained from 57,267 globally distributed vertical soil profiles using the PRODA approach with the microbial model (see Methods for details). a–h, Global distributions of SOC stock (a), microbial CUE (b), non-microbial carbon transfer (c), plant carbon inputs (d), carbon input allocation (e), baseline decomposition (f), environmental modifier (g) and vertical transport rate (h). Values shown are predicted by the best-guess model calibrated using all available data (Methods; see Extended Data Fig. 7 for their uncertainties). Boxplots represent the SOC stock for the top 1 m and model components in different pre-defined climate zones (Supplementary Fig. 3). The lower, middle and upper hinges show the first, median and third quartiles of the distribution. Whiskers in the boxplot represent the 1.5 times the interquartile range from the hinges. The components and units for the maps and the boxplots are the same.
