Boreal zone | IUCN category | Age (years) | |||||||||||||||||||||||||||||||
1-20 | 21-40 | 41-60 | 61-80 | 81-100 | 101-120 | 121-140 | 141-160 | 161-180 | 181-200 | 201+ | Other2 | ||||||||||||||||||||||
Non-boreal | NA | 3.5 | 3.0 | 2.7 | 2.9 | 3.1 | 4.4 | 4.4 | 5.3 | 6.1 | 7.4 | 3.9 | 4.7 | ||||||||||||||||||||
Ia | 55.8 | 60.9 | 53.1 | 52.3 | 52.3 | 54.7 | 70.4 | 87.0 | 78.5 | 0.0 | 80.8 | 100.0 | |||||||||||||||||||||
Ib | 62.2 | 40.6 | 30.6 | 19.2 | 19.5 | 23.6 | 26.5 | 29.1 | 32.7 | 44.0 | 20.0 | 85.5 | |||||||||||||||||||||
II | 38.4 | 16.0 | 13.1 | 11.9 | 12.0 | 16.0 | 15.0 | 17.7 | 18.5 | 17.1 | 10.4 | 34.5 | |||||||||||||||||||||
III | 83.1 | 67.5 | 69.6 | 68.6 | 90.0 | 97.4 | 100.0 | 0.0 | 0.0 | 0.0 | 84.1 | 88.1 | |||||||||||||||||||||
IV | 31.6 | 29.6 | 25.1 | 34.6 | 25.8 | 56.9 | 42.0 | 74.6 | 100.0 | 0.0 | 100.0 | 46.9 | |||||||||||||||||||||
V | 78.9 | 100.0 | 0.0 | 0.0 | 10.5 | 0.0 | 0.0 | 4.8 | 4.7 | 0.0 | 26.0 | 4.7 | |||||||||||||||||||||
VI | 79.7 | 62.2 | 91.4 | 86.3 | 82.1 | 99.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 99.9 | |||||||||||||||||||||
Other | 100.0 | 98.5 | 96.0 | 75.7 | 67.8 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
Boreal | NA | 3.2 | 2.4 | 2.1 | 1.8 | 1.8 | 1.8 | 1.9 | 3.3 | 7.1 | 11.8 | 8.0 | 3.2 | ||||||||||||||||||||
Ia | 72.8 | 73.4 | 53.7 | 49.3 | 44.9 | 73.5 | 69.6 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
Ib | 23.3 | 16.8 | 12.7 | 11.3 | 12.8 | 12.9 | 12.4 | 27.6 | 25.8 | 66.0 | 19.8 | 22.4 | |||||||||||||||||||||
II | 18.6 | 10.7 | 8.2 | 7.4 | 7.4 | 8.2 | 8.2 | 15.4 | 29.8 | 31.7 | 26.5 | 16.5 | |||||||||||||||||||||
III | 0.0 | 66.2 | 53.7 | 73.7 | 67.8 | 75.3 | 76.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
IV | 45.8 | 26.3 | 32.7 | 28.3 | 19.4 | 40.0 | 21.1 | 51.2 | 75.5 | 100.0 | 66.9 | 69.7 | |||||||||||||||||||||
V | 100.0 | 0.0 | 95.0 | 64.9 | 73.7 | 94.3 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
VI | 90.4 | 79.0 | 61.2 | 57.3 | 38.2 | 38.6 | 92.8 | 100.0 | 100.0 | 100.0 | 0.0 | 99.5 | |||||||||||||||||||||
Other | 58.4 | 33.6 | 29.3 | 30.2 | 30.5 | 37.4 | 42.2 | 68.4 | 0.0 | 100.0 | 0.0 | 100.0 | |||||||||||||||||||||
Canada | NA | 2.4 | 1.9 | 1.7 | 1.5 | 1.5 | 1.7 | 1.8 | 2.9 | 4.8 | 6.3 | 3.5 | 2.7 | ||||||||||||||||||||
Ia | 44.3 | 58.7 | 38.4 | 36.3 | 35.9 | 52.0 | 58.3 | 95.0 | 78.5 | 0.0 | 80.8 | 99.9 | |||||||||||||||||||||
Ib | 23.0 | 15.7 | 11.8 | 9.8 | 10.8 | 11.5 | 11.2 | 21.2 | 21.1 | 44.8 | 14.1 | 21.7 | |||||||||||||||||||||
II | 16.8 | 8.9 | 7.0 | 6.3 | 6.3 | 7.4 | 7.3 | 11.7 | 15.7 | 15.0 | 9.7 | 15.3 | |||||||||||||||||||||
III | 83.1 | 55.3 | 42.5 | 50.8 | 55.6 | 68.5 | 63.7 | 0.0 | 0.0 | 0.0 | 84.1 | 88.1 | |||||||||||||||||||||
IV | 29.3 | 19.8 | 23.2 | 22.8 | 15.7 | 34.1 | 19.8 | 49.2 | 61.8 | 100.0 | 66.2 | 66.7 | |||||||||||||||||||||
V | 62.1 | 100.0 | 95.0 | 64.9 | 73.7 | 94.3 | 100.0 | 4.8 | 4.7 | 0.0 | 26.0 | 4.7 | |||||||||||||||||||||
VI | 88.7 | 68.8 | 54.8 | 48.6 | 35.5 | 37.3 | 79.0 | 100.0 | 100.0 | 100.0 | 0.0 | 88.5 | |||||||||||||||||||||
Other | 52.4 | 32.3 | 28.1 | 28.8 | 30.1 | 36.5 | 42.2 | 68.4 | 0.0 | 100.0 | 0.0 | 99.5 | |||||||||||||||||||||
Source: Canada's National Forest Inventory, combined remeasured (2007-2017) and projected (2006-2017 with NFI projection system) data (Version 2, November 2022) (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 IUCN: International Union for Conservation of Nature (http://www.iucn.org). Data obtained from the Canadian Protected and Conserved Areas Database (CPCAD) (https://www.canada.ca/en/environment-climate-change/services/national-wildlife-areas/protected-conserved-areas-database.html). 2 Missing or unknown age class. |
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