Table 5.4a. Relative standard errors (%) of area of forest land by forest type, age class and managed forest region in Canada.
Managed forests 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
0 Non-treed 110.73 99.47 66.92 83.80 - - - - - - - 25.05 24.80
Treed Mixedwood 51.90 37.45 31.44 38.07 89.74 69.38 81.31 83.81 - - 97.25 - 38.87
Treed Coniferous 54.63 32.67 21.70 34.71 33.86 34.00 30.71 56.58 70.90 33.89 9.33 - 12.61
Treed Broadleaf 60.79 59.76 23.32 43.01 58.97 97.18 99.23 - - - 20.59 - 50.64
Subtotal 40.20 34.32 15.19 22.32 57.02 87.62 29.19 55.86 70.90 33.89 9.33 25.05 22.37
11 Non-treed 28.29 31.48 33.18 31.73 30.15 27.01 51.84 58.64 97.89 95.79 99.98 4.03 3.84
Treed Broadleaf 5.81 4.70 4.87 4.52 4.65 7.44 12.43 18.95 35.13 49.36 40.48 - 2.08
Treed Mixedwood 4.56 3.72 3.90 3.54 3.67 5.48 6.84 11.67 19.56 33.21 26.23 - 1.57
Treed Coniferous 3.70 3.19 2.90 2.42 2.34 3.11 2.94 4.29 5.53 6.87 3.82 - 0.99
Subtotal 2.59 2.25 2.14 1.85 1.83 2.57 2.67 3.96 5.29 6.69 3.79 4.03 0.78
12 Non-treed 57.24 59.57 57.75 59.60 72.17 99.82 - - - - - 10.91 10.74
Treed Mixedwood 14.79 11.69 11.70 9.47 10.85 19.41 20.58 40.36 52.23 99.82 51.34 - 4.78
Treed Broadleaf 15.89 15.74 14.52 10.07 13.58 31.17 41.26 41.20 91.21 99.43 97.87 - 5.81
Treed Coniferous 13.12 7.89 7.45 6.21 6.53 9.68 11.70 15.00 19.80 26.77 17.29 - 2.94
Subtotal 8.79 6.50 5.90 4.72 5.39 8.48 10.51 13.50 19.04 26.41 17.05 10.91 2.36
13 Treed Broadleaf 11.93 12.58 14.33 12.49 8.74 8.89 40.08 62.66 - 68.78 - - 4.52
Non-treed 76.01 46.03 35.01 35.40 34.58 37.79 99.99 99.99 - - - 4.40 4.27
Treed Mixedwood 10.06 9.17 10.40 9.04 7.40 5.10 7.80 41.41 75.26 64.69 100.03 - 2.99
Treed Coniferous 7.70 4.14 3.51 3.58 3.33 2.41 2.64 3.80 17.91 40.79 19.92 - 1.19
Subtotal 5.56 3.66 3.26 3.22 2.87 2.17 2.55 3.78 17.63 34.45 19.85 4.40 1.06
20 Non-treed 64.21 83.60 80.48 - 95.14 94.69 100.32 - - - - 12.18 12.09
Treed Broadleaf 18.48 12.32 9.72 9.83 9.82 16.23 30.33 37.41 79.01 73.03 65.10 - 4.70
Treed Mixedwood 14.28 10.17 8.73 7.74 8.51 11.60 13.25 23.69 34.28 41.23 73.41 - 3.75
Treed Coniferous 14.40 7.69 5.99 5.09 4.88 5.42 5.15 9.64 12.03 14.56 6.54 - 2.03
Subtotal 9.80 5.70 4.49 3.95 3.93 4.85 4.91 9.17 11.73 14.29 6.52 12.18 1.70
31 Non-treed - - - - - - - - - - - 38.76 38.76
Treed Mixedwood 82.82 32.19 31.11 30.45 25.67 42.99 35.60 90.70 99.57 - - - 16.21
Treed Broadleaf 35.90 45.43 21.61 41.98 49.04 44.53 99.74 - - - - - 18.60
Treed Coniferous 55.76 19.68 37.11 18.55 25.63 25.93 32.51 28.85 70.80 82.15 35.99 - 9.66
Subtotal 29.91 16.82 23.89 17.17 21.28 20.02 29.37 28.79 69.59 82.15 35.99 38.76 7.82
32 Non-treed 86.86 97.97 82.40 99.06 74.25 - - - - - - 46.35 46.06
Treed Mixedwood 39.02 24.45 21.06 31.04 35.65 38.78 52.30 99.00 - - 97.86 - 13.09
Treed Broadleaf 35.68 16.85 19.93 26.27 33.32 50.48 58.87 99.01 - 99.54 - - 10.82
Treed Coniferous 39.17 30.43 27.65 22.01 17.57 22.04 33.33 31.51 60.56 52.48 35.51 - 9.38
Subtotal 26.70 14.32 13.82 15.05 15.23 20.54 27.16 29.70 60.56 48.92 34.94 46.35 6.20
33 Non-treed 55.61 72.22 60.98 79.50 99.90 60.88 99.81 99.69 - - - 14.29 14.00
Treed Mixedwood 22.11 21.45 25.16 17.19 22.10 22.78 34.68 28.95 51.40 100.22 53.63 - 8.70
Treed Broadleaf 23.10 20.75 19.59 19.23 19.68 26.55 35.36 55.54 85.28 86.51 66.28 - 8.41
Treed Coniferous 15.52 11.09 11.43 9.48 10.02 10.76 9.34 13.87 15.15 18.91 9.62 - 3.51
Subtotal 11.15 9.09 9.19 7.72 8.52 9.39 8.91 13.03 14.76 18.78 9.57 14.29 3.01
40 Non-treed - 100.76 92.17 65.11 63.41 - 90.57 - - - - 27.28 23.45
Treed Broadleaf 40.85 29.56 32.47 40.87 25.01 17.94 80.23 69.69 - - - - 12.06
Treed Mixedwood 40.69 31.21 26.86 29.09 25.38 18.01 25.60 64.85 96.31 - - - 9.88
Treed Coniferous 32.59 19.03 14.57 14.66 16.41 7.68 10.83 21.91 63.83 66.28 24.11 - 4.67
Subtotal 23.16 14.47 12.30 12.45 12.53 6.79 10.15 20.38 62.85 66.28 24.11 27.28 4.00
50 Non-treed 30.05 46.65 43.00 41.26 43.65 99.98 - - - - - 6.92 6.74
Treed Coniferous 8.44 6.34 5.35 5.25 7.04 9.51 12.55 19.29 24.79 36.59 24.50 - 2.60
Treed Mixedwood 6.76 5.17 4.00 4.69 7.29 11.82 17.24 27.39 61.51 61.66 94.08 - 2.27
Treed Broadleaf 6.50 4.74 4.35 4.61 5.94 12.18 22.64 31.76 61.89 75.02 56.36 - 2.22
Subtotal 4.09 3.13 2.63 2.82 3.89 6.49 9.84 14.36 22.71 31.69 23.67 6.92 1.35
100 Non-treed 57.12 80.07 71.06 100.18 54.91 98.00 97.04 - - - - 12.07 11.73
Treed Broadleaf 20.75 13.40 11.13 12.24 12.26 23.84 24.15 37.85 81.71 55.29 60.36 - 5.87
Treed Mixedwood 20.31 11.80 9.06 9.11 10.11 16.58 15.99 39.76 58.57 50.30 54.97 - 4.54
Treed Coniferous 17.84 9.64 8.89 8.11 8.23 9.21 7.55 12.06 49.81 28.94 20.44 - 3.28
Subtotal 11.27 7.29 6.72 6.01 6.45 8.02 7.15 11.63 46.78 25.87 19.75 12.07 2.61
Canada Non-treed 21.68 22.55 23.43 22.31 21.98 21.43 42.62 56.03 97.89 95.79 99.98 2.57 2.47
Treed Broadleaf 3.89 3.15 2.89 2.89 3.09 8.13 9.63 14.39 28.94 30.22 27.94 - 1.45
Treed Mixedwood 3.36 2.70 2.57 2.49 3.14 3.37 4.43 9.18 16.31 26.52 28.99 - 1.14
Treed Coniferous 2.95 2.11 1.87 1.67 1.66 1.72 1.75 2.58 4.45 5.66 2.98 - 0.66
Total 1.96 1.54 1.39 1.26 1.33 1.55 1.65 2.47 4.28 5.49 2.96 2.57 0.53
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.
Managed forest
Code Description
0 Not available
11 Long term volume or area based Crown timber dispositions
12 Short term volume or area based Crown timber dispositions
13 No current Crown timber dispostions
20 Legal protection status (IUCN class IA, IB, II, III, IV, V, VI equivalent)
31 Reserved by the Federal government for military or other purposes
32 Reserved by the Federal government under the Indian Act
33 Reserved or designated restricted use by provincial or territorial government
40 Aboriginal lands
50 Privately-owned lands
100 Water