| Boreal zone | 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-boreal | Non-treed | ±7.92 | ±6.67 | ±16.57 | ±29.43 | ±0.53 | ±1.38 | ±0.16 | ±0.60 | - | ±0.14 | - | ±397.53 | ±399.10 |
| Treed Broadleaf | ±156.25 | ±243.00 | ±297.33 | ±335.73 | ±309.75 | ±175.97 | ±55.91 | ±32.81 | ±20.44 | ±15.43 | ±16.02 | - | ±645.45 | |
| Treed Mixedwood | ±169.78 | ±201.34 | ±268.55 | ±271.38 | ±270.68 | ±165.70 | ±81.08 | ±72.04 | ±21.03 | ±16.40 | ±20.54 | - | ±573.37 | |
| Treed Coniferous | ±349.64 | ±398.57 | ±341.82 | ±344.56 | ±409.16 | ±352.78 | ±351.36 | ±308.61 | ±226.27 | ±219.88 | ±828.15 | - | ±1 346.33 | |
| Subtotal | ±418.99 | ±508.42 | ±526.91 | ±553.13 | ±580.19 | ±427.64 | ±364.90 | ±318.60 | ±228.16 | ±221.03 | ±828.56 | ±397.53 | ±1 648.41 | |
| Boreal | Non-treed | ±49.15 | ±91.67 | ±117.73 | ±127.79 | ±132.94 | ±87.70 | ±21.97 | ±5.15 | ±2.49 | ±3.03 | ±0.93 | ±776.54 | ±818.49 |
| Treed Broadleaf | ±339.53 | ±301.96 | ±379.76 | ±497.15 | ±423.98 | ±332.46 | ±179.06 | ±83.40 | ±21.29 | ±9.24 | ±4.72 | - | ±963.17 | |
| Treed Mixedwood | ±340.05 | ±352.08 | ±342.03 | ±444.03 | ±418.25 | ±418.02 | ±209.35 | ±109.60 | ±53.54 | ±30.56 | ±64.25 | - | ±983.45 | |
| Treed Coniferous | ±573.08 | ±985.12 | ±1 088.79 | ±1 104.04 | ±1 141.96 | ±1 591.31 | ±1 397.05 | ±778.01 | ±305.89 | ±131.00 | ±483.52 | ±3.64 | ±3 231.28 | |
| Subtotal | ±749.50 | ±1 092.71 | ±1 208.52 | ±1 295.98 | ±1 294.78 | ±1 680.84 | ±1 424.12 | ±790.12 | ±311.28 | ±134.87 | ±487.79 | ±776.55 | ±3 606.38 | |
| Canada | Non-treed | ±49.79 | ±91.91 | ±118.89 | ±131.14 | ±132.94 | ±87.71 | ±21.97 | ±5.18 | ±2.49 | ±3.03 | ±0.93 | ±872.38 | ±910.61 |
| Treed Broadleaf | ±373.76 | ±387.59 | ±482.31 | ±599.89 | ±525.08 | ±376.16 | ±187.58 | ±89.62 | ±29.51 | ±17.99 | ±16.70 | - | ±1 159.45 | |
| Treed Mixedwood | ±380.08 | ±405.59 | ±434.86 | ±520.39 | ±498.20 | ±449.67 | ±224.50 | ±131.15 | ±57.52 | ±34.69 | ±67.45 | - | ±1 138.39 | |
| Treed Coniferous | ±671.32 | ±1 062.70 | ±1 141.19 | ±1 156.56 | ±1 213.05 | ±1 629.94 | ±1 440.56 | ±836.98 | ±380.48 | ±255.94 | ±958.97 | ±3.64 | ±3 500.54 | |
| Total | ±858.66 | ±1 205.20 | ±1 318.39 | ±1 409.08 | ±1 418.83 | ±1 734.39 | ±1 470.13 | ±851.93 | ±385.94 | ±258.93 | ±961.49 | ±872.39 | ±3 965.25 | |
| 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 Non-boreal zone in the Arctic ecozones (Arctic Cordillera, Northern Arctic, Southern Arctic) are not inventoried. The total land and water area amounts to approximately 252,202.08 thousand ha. | ||||||||||||||
|
1 Missing or unknown age class. |
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