Click on image to view larger version.

Fig. 12. For Southeast region, comparison of our model estimates of land use change effects on soil and forest floor carbon flux to previous estimates and to an estimate for other forest carbon pools. Afforestation effects are negative values and deforestation effects are positive values. The total effect is shown by the numbers above the bars. Symbol colors are: black = soil; gray = forest floor; white = tree carbon (live trees only for "Affor. only" estimate); diagonal stripes = dead tree, coarse woody debris, and understory. "Heath and others" estimates are from Heath et al. (2002), "Tree C net" estimates were contributed by us to USEPA (2004), and the "Affor. Only." estimate is for all pools except soil and forest floor on afforested lands only and was derived as described in the text.