Fig. 4: Dynamic increases of metal-organic associations under Sphagnum expansion. | Nature Communications

Fig. 4: Dynamic increases of metal-organic associations under Sphagnum expansion.

From: Sphagnum increases soil’s sequestration capacity of mineral-associated organic carbon via activating metal oxides

Fig. 4: Dynamic increases of metal-organic associations under Sphagnum expansion.

a SOC; (b) bound OC; (c) 0.5Feo+Alo; (d) molar ratio of bound OC:(0.5Fed + Ald); (e) pH; (f) water-soluble phenols. SOC, soil organic carbon; bound OC, organic carbon bound to reactive metal oxides extracted by the citrate-bicarbonate-dithionite method; Feo and Alo, oxalate-extractable iron and aluminum; Fed and Ald, dithionite-extractable iron and aluminum; 0.5Feo + Alo, weight-normalized contents of Feo and Alo; 0.5Fed + Ald, weight-normalized contents of Fed and Ald. X-axis represents Sphagnum coverage (%) at the top (Jinchuan, Hani and Dajiuhu) and the time since of Sphagnum cultivation at the bottom (Dushan). Blue dashed line indicates the average value of pristine Sphagnum wetland in Dushan. Mean values are shown with standard error (n = 3). Only significant effects are noted (p < 0.05; one-way ANOVA).

Back to article page