SSSAJ -- DeSutter et al. 72 (1): 126 Figure IG3

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Fig. 3. Potential methods used to determine the vertical CO₂ concentration gradient in soil from actual data: (A1) dC/dz evaluated at z = z_i ; (A2) slope of the line for CO₂ concentration with depth; and (A3) ${Delta}$ C/ ${Delta}$ z evaluated between z_i and z_j.