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Table 4 Average annual net C change (Tg C year−1) across US forests between 2006 and 2010, disaggregated into categories of non-forest land to forest land, forest land to non-forest land, and forest land remaining forest land

From: Attribution of net carbon change by disturbance type across forest lands of the conterminous United States

Category Area (Mha year−1) Net C gain (Tg C year−1) Net C loss (Tg C year−1)
Non-forest land to forest land 0.4 −8 ± 1  
Forest land to non-forest land 0.1   6 ± 1
Forest land remaining forest land 221.1 −452 ± 47 185 ± 10
 Insect damage 0.9   9 ± 1
 Forest fire 0.6   7 ± 1
 Wind damage 0.6   5 ± 1
 Drought 0.8   1 ± 0
 Timberlands 152.0 −342 ± 42 162 ± 10
 Undisturbed forest 54.9 −109 ± 19  
Total 221.6 −460 ± 48 191 ± 10
Net C change    −269 ± 49
  1. Results are further disaggregated by disturbance type within the forest land remaining forest land category