Soil Carbon Accumulation and CO₂ Flux in Experimental Restoration Plots, Southern Iceland: Comparing Soil Treatment Strategies

Figure 4

Summary results. (a) Mean soil carbon content for all samples (A and B layers combined shown plus one standard error) for all four treatments: for control and lupine plots; for grass and grass-birch-willow treated plots. (b) Mean soil CO₂ flux (in μmol m⁻² sec⁻¹). Sample size as in (a) (shown plus one standard error).

(a)

(b)