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Fig. 6. Comparison of water table (WT) depth, redox potential (EH), temperature (T) of soil at 50-cm depth or of air, and dissolution rate for four soils: (A) Clermont (5 g C kg–1 soil); (B) Avonburg (7 g kg–1); (C) Washtenaw (17 g kg–1); and (D) Brookston (26 g kg–1). The organic C values represent the weighted average for the upper 50 cm of soil. The horizontal dashed line represents the theoretical EH for Fe reduction at the pH of the soil characterization sample (Fig. 7.6, McBride, 1994).
