Fig. 4

A Change in live aboveground carbon (Mg ha⁻¹ year⁻¹) in all FIA plots with no disturbance and at least 10 years between remeasurements. Ecological sections are outlined in black; those containing at least 10 plots are shown in the color corresponding to mean change among all plots. B Mean change in live aboveground carbon within each ecological section, calculated from MC2 model output. C Difference between the mean rates of change calculated using model (B) or FIA (A) data; red colors show where the model underestimated the mean according to FIA data, whereas blue shows areas where it overestimated the increase in live fuels. For all plots, white ecological sections did not have enough appropriate FIA plots for analysis. See Appendix C for locations of plots excluded from analyses, as well as breakdown according to smaller ecological subregions