Fig. 2: The carbon removal from the enhanced dissimilatory iron reduction (DIR) system.
From: Biogeochemical coupling of C/Fe in oil-polluted wetlands associated with iron reduction
The change of soil total solid organic carbon (TSC) in different treatment groups for soil samples from Shengli Oilfield (a) and Dagang Oilfield (b), and the Spearman correlation analysis between pH, EC, TDC, IC, TDN, and TSC with carbon depletion from soil. The colors and numbers shown in (c) indicate the strength of the correlation (*p < 0.05, **p < 0.01). The contents of n-alkanes of C8-40 for soil samples from Shengli Oilfield (d) and Dagang Oilfield (f), and the contents of 16 preferentially controlled PAHs for soil samples from Shengli Oilfield (e) and Dagang Oilfield (g) in different treatment groups. Error bars represent the standard deviation (SD) of the mean across all data points in the figure.
