Fig 9. Changes in estimated and modeled biomass C with stand age.
(A) Estimated biomass C based on wood volume in the NFI. The solid line represents the regression of biomass C with age for 10-year bins. (B) Modeled biomass C. The black solid line indicates the mean and standard deviation of biomass C in the total area at 10-year intervals. The gray dotted line indicates mean biomass C based on a cutting ratio of 99% in existing forests. SW, CT, and NE indicate mean values of the southwestern, central, and northeastern blocks, respectively.