Fig. 5: Osmium concentrations (OsCT) with respect to material classes and pore distances. | Nature Communications

Fig. 5: Osmium concentrations (OsCT) with respect to material classes and pore distances.

From: Microscale carbon distribution around pores and particulate organic matter varies with soil moisture regime

Fig. 5

a Linear relationship between Os concentration in the soil matrix as a proxy for mineral-associated organic matter and the soil matrix gray value prior to Os staining as proxy for bulk density. Both properties are given in arbitrary units resulting from grayscale normalization. b Average Os concentration in different material classes of each soil. The boxplots show the 0%, 25%, 50%, 75%, and 100% percentiles after outlier detection (n = 8). Osmium concentrations in the soil matrix c and in POM d decline towards pore boundaries. Shaded areas represent two standard errors in each direction (n = 8).

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