Fig. 1
From: Predicting the impact of dynamic global urban expansion on urban soil organic carbon

(a) Spatial distribution of USOCC (Urban soil organic carbon concentration) databases for tropical (A), arid (B), temperate humid (Cf), temperate summer dry (Cs), temperate winter dry (Cw), boreal humid (Df), boreal summer dry or winter dry (Dsw), and polar (E) climate regions (R version 4.3.0 https://www.r-project.org/). (b) Global frequency distribution of USOCD values. (c) Variation in SOCD data with dimension and 95% confidence interval representation.