Fig. 1: Comparison of OC-Fe across terrestrial ecosystems in topsoil.
From: Important role of Fe oxides in global soil carbon stabilization and stocks
A OC-Fe; B Correlations of SOC with OC-Fe; C Correlations of MAOC with OC-Fe. SOC, soil organic carbon; OC-Fe, Fe-bound organic carbon. MAOC, mineral-associated organic carbon. The numbers in parentheses indicate the numbers of samples. Box plots indicate the medians (horizontal lines), 1st and 3rd quartiles (boxes), 1.5× interquartile range (whiskers), means (diamonds), and outliers (dots outside whiskers). Shading depicts 95% confidence intervals on the slope.
