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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