Figure 4

Mean simulated response of net ecosystem production (NEP) to clear-cut (solid lines) and selective (dashed line) harvest over the entire simulation area, for both hardwood (black lines) and conifer (grey line) forest types. Vertical dashed lines denote breakpoints for age-class calculations used in the biological C-budget optimisation. Points show annual estimates of NEP from eight eddy-covariance flux towers in Northern Wisconsin and Michigan in a harvest chronosequence [19], bold symbols denote site means values for sites with measurements in more than two years.