| 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 | ±0.68 | ±1.48 | ±5.15 | ±10.39 | ±6.86 | ±8.37 | ±3.01 | ±0.30 | ±0.30 | ±0.20 | ±0.12 | ±5.03 | ±17.00 | |
| Treed Broadleaf | ±12.88 | ±24.37 | ±52.18 | ±81.83 | ±74.46 | ±47.84 | ±35.47 | ±19.33 | ±6.09 | ±6.66 | ±5.66 | - | ±140.56 | |
| Treed Mixedwood | ±11.47 | ±23.27 | ±41.10 | ±55.54 | ±56.79 | ±50.68 | ±29.07 | ±21.97 | ±9.60 | ±8.39 | ±9.51 | - | ±113.22 | |
| Treed Coniferous | ±15.13 | ±47.03 | ±83.66 | ±107.68 | ±111.56 | ±151.35 | ±125.14 | ±98.16 | ±63.09 | ±40.15 | ±234.35 | - | ±377.09 | |
| Total | ±22.95 | ±57.87 | ±106.94 | ±146.57 | ±145.82 | ±166.83 | ±133.31 | ±102.43 | ±64.11 | ±41.55 | ±234.61 | ±5.03 | ±418.40 | |
| 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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