| Forest type | Age (years) | Total | ||||||||||||
| 1-20 | 21-40 | 41-60 | 61-80 | 81-100 | 101-120 | 121-140 | 141-160 | 161-180 | 181-200 | 201+ | Other1 | |||
| Non-treed | ±1.06 | ±1.77 | ±5.43 | ±16.56 | ±11.58 | ±14.64 | ±5.39 | ±0.55 | ±0.48 | ±0.34 | ±0.18 | 0.00 | ±26.20 | |
| Treed Broadleaf | ±22.30 | ±41.17 | ±83.05 | ±135.85 | ±120.02 | ±81.05 | ±67.24 | ±37.31 | ±11.80 | ±12.79 | ±10.32 | - | ±234.18 | |
| Treed Mixedwood | ±19.77 | ±38.35 | ±65.68 | ±92.41 | ±95.37 | ±95.08 | ±53.20 | ±39.62 | ±18.38 | ±18.16 | ±15.68 | - | ±195.35 | |
| Treed Coniferous | ±26.26 | ±79.86 | ±134.66 | ±183.44 | ±188.80 | ±261.24 | ±213.75 | ±160.00 | ±117.11 | ±69.44 | ±445.55 | - | ±671.63 | |
| Total | ±39.73 | ±97.70 | ±171.39 | ±246.82 | ±243.47 | ±289.95 | ±230.37 | ±169.00 | ±119.13 | ±72.91 | ±445.95 | 0.00 | ±738.09 | |
| Source: Canada's National Forest Inventory, combined remeasured (2007-2017) and projected (2006-2017 with NFI projection system) data (Version 3.1, October 2025) (http://nfi.nfis.org) | ||||||||||||||
| Note: The Arctic ecozones (Arctic Cordillera, Northern Arctic, Southern Arctic), and the Taiga Plains and Hudson Plains ecozones located in Nunavut, are not inventoried. These non-inventoried areas total 262,189.89 thousand ha. | ||||||||||||||
|
1 Missing or unknown age class. |
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