Terrestrial ecozone | 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 | ||||||||||||||||||||||
Taiga Plains | NA | 37.9 | 26.0 | 9.2 | 5.6 | 1.8 | 10.6 | 12.5 | 17.2 | 25.3 | 67.6 | 41.2 | 26.7 | ||||||||||||||||||||
Ib | 0.0 | 100.3 | 30.4 | 30.0 | 98.4 | 97.7 | 100.4 | 100.4 | 97.1 | 0.0 | 100.3 | 0.0 | |||||||||||||||||||||
II | 100.0 | 100.0 | 26.4 | 27.1 | 16.7 | 59.1 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
III | 0.0 | 0.0 | 0.0 | 100.0 | 47.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
V | 0.0 | 0.0 | 0.0 | 0.0 | 97.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
Other | 0.0 | 0.0 | 0.0 | 51.8 | 37.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
Taiga Shield | NA | 43.8 | 51.9 | 67.9 | 6.1 | 4.2 | 2.5 | 3.2 | 59.3 | 0.0 | 0.0 | 0.0 | 4.1 | ||||||||||||||||||||
Ib | 0.0 | 0.0 | 0.0 | 0.0 | 80.1 | 19.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 30.2 | |||||||||||||||||||||
II | 0.0 | 0.0 | 0.0 | 0.0 | 36.6 | 20.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
III | 0.0 | 0.0 | 0.0 | 0.0 | 99.0 | 73.4 | 100.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
V | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
Boreal Shield | NA | 3.5 | 3.4 | 2.9 | 2.3 | 1.9 | 2.9 | 5.7 | 8.0 | 17.2 | 47.1 | 51.6 | 3.8 | ||||||||||||||||||||
Ia | 53.2 | 71.6 | 52.8 | 55.2 | 44.1 | 67.5 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 99.1 | |||||||||||||||||||||
Ib | 54.4 | 32.3 | 25.6 | 14.7 | 16.9 | 28.6 | 29.4 | 52.2 | 73.6 | 100.0 | 0.0 | 44.8 | |||||||||||||||||||||
II | 21.6 | 19.4 | 12.8 | 11.9 | 11.3 | 15.9 | 18.2 | 29.0 | 53.7 | 69.3 | 58.1 | 40.4 | |||||||||||||||||||||
III | 51.5 | 36.7 | 28.6 | 26.8 | 23.2 | 18.5 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 13.2 | |||||||||||||||||||||
IV | 100.0 | 100.0 | 59.1 | 58.6 | 64.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
VI | 84.6 | 77.5 | 59.8 | 82.3 | 72.0 | 69.8 | 79.4 | 0.0 | 0.0 | 0.0 | 0.0 | 95.0 | |||||||||||||||||||||
Other | 100.0 | 0.0 | 81.6 | 99.9 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
Atlantic Maritime | NA | 4.0 | 5.1 | 3.5 | 4.7 | 7.1 | 12.9 | 28.1 | 65.7 | 100.0 | 98.4 | 100.0 | 9.7 | ||||||||||||||||||||
Ia | 100.0 | 70.3 | 94.5 | 70.8 | 86.3 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
Ib | 94.8 | 87.4 | 47.8 | 51.7 | 73.9 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.8 | |||||||||||||||||||||
II | 42.8 | 59.5 | 34.2 | 36.7 | 49.1 | 69.5 | 85.4 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
III | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
IV | 61.6 | 65.2 | 61.6 | 44.6 | 41.6 | 71.0 | 0.0 | 99.6 | 0.0 | 0.0 | 0.0 | 79.0 | |||||||||||||||||||||
Mixedwood Plains | NA | 8.8 | 7.5 | 6.9 | 9.6 | 17.2 | 29.2 | 38.5 | 71.2 | 0.0 | 0.0 | 0.0 | 26.9 | ||||||||||||||||||||
Ia | 100.0 | 61.9 | 92.3 | 93.1 | 99.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
II | 59.3 | 64.2 | 62.1 | 57.9 | 71.5 | 100.0 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
IV | 0.0 | 0.0 | 99.9 | 0.0 | 99.9 | 99.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 99.9 | |||||||||||||||||||||
VI | 0.0 | 0.0 | 100.1 | 0.0 | 100.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
Other | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
Boreal Plains | NA | 9.6 | 6.8 | 4.2 | 3.9 | 4.3 | 5.3 | 6.9 | 11.5 | 19.4 | 26.0 | 43.6 | 8.0 | ||||||||||||||||||||
Ia | 0.0 | 100.0 | 100.0 | 51.8 | 70.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
Ib | 51.5 | 47.8 | 35.4 | 27.8 | 35.8 | 60.8 | 85.7 | 76.8 | 84.0 | 100.0 | 0.0 | 0.0 | |||||||||||||||||||||
II | 61.7 | 33.0 | 14.2 | 12.0 | 24.0 | 27.3 | 67.9 | 65.5 | 78.1 | 100.0 | 100.0 | 97.8 | |||||||||||||||||||||
III | 0.0 | 73.2 | 62.3 | 81.6 | 71.2 | 0.0 | 100.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
IV | 87.4 | 64.9 | 58.2 | 60.3 | 65.3 | 87.6 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 86.3 | |||||||||||||||||||||
V | 100.0 | 85.8 | 76.6 | 88.3 | 81.3 | 67.2 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
VI | 78.3 | 66.1 | 79.1 | 53.2 | 63.1 | 70.8 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
Prairies | NA | 95.1 | 95.8 | 22.4 | 13.9 | 14.6 | 77.9 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 35.1 | ||||||||||||||||||||
II | 0.0 | 0.0 | 63.5 | 70.8 | 90.8 | 95.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
III | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
IV | 0.0 | 0.0 | 99.2 | 61.9 | 47.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
V | 100.0 | 0.0 | 100.0 | 90.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
VI | 0.0 | 0.0 | 100.0 | 98.2 | 67.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
Taiga Cordillera | NA | 93.2 | 21.4 | 20.8 | 14.4 | 23.7 | 5.6 | 40.4 | 65.2 | 100.0 | 0.0 | 0.0 | 0.0 | ||||||||||||||||||||
Ib | 0.0 | 0.0 | 0.0 | 99.2 | 0.0 | 33.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
II | 0.0 | 0.0 | 0.0 | 76.6 | 100.0 | 40.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
III | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
IV | 0.0 | 89.2 | 100.0 | 100.0 | 0.0 | 50.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
V | 0.0 | 0.0 | 0.0 | 99.9 | 0.0 | 99.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
Other | 0.0 | 0.0 | 0.0 | 99.9 | 0.0 | 86.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
Boreal Cordillera | NA | 32.0 | 9.9 | 8.9 | 7.5 | 6.5 | 7.1 | 11.3 | 12.6 | 14.1 | 20.2 | 8.4 | 35.4 | ||||||||||||||||||||
Ib | 0.0 | 55.7 | 54.2 | 52.0 | 75.4 | 46.6 | 38.9 | 39.0 | 30.0 | 62.2 | 20.4 | 0.0 | |||||||||||||||||||||
II | 0.0 | 100.0 | 74.0 | 74.8 | 52.4 | 49.3 | 63.6 | 57.1 | 64.3 | 100.0 | 67.5 | 0.0 | |||||||||||||||||||||
IV | 0.0 | 72.1 | 74.8 | 72.2 | 60.7 | 89.9 | 100.0 | 0.0 | 0.0 | 0.0 | 54.0 | 0.0 | |||||||||||||||||||||
Pacific Maritime | NA | 22.2 | 12.5 | 14.0 | 14.4 | 15.0 | 15.1 | 21.1 | 18.1 | 16.3 | 18.2 | 5.0 | 11.0 | ||||||||||||||||||||
Ia | 0.0 | 0.0 | 0.0 | 100.1 | 0.0 | 100.1 | 89.5 | 100.1 | 0.0 | 0.0 | 0.0 | 100.1 | |||||||||||||||||||||
Ib | 0.0 | 100.0 | 100.0 | 88.7 | 100.0 | 54.8 | 93.2 | 70.9 | 98.9 | 96.8 | 38.1 | 100.0 | |||||||||||||||||||||
II | 100.0 | 54.7 | 63.3 | 35.6 | 46.5 | 45.6 | 60.0 | 74.6 | 43.6 | 45.0 | 15.7 | 44.4 | |||||||||||||||||||||
III | 0.0 | 77.9 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 87.2 | 0.0 | |||||||||||||||||||||
IV | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.1 | 0.0 | |||||||||||||||||||||
Montane Cordillera | NA | 11.4 | 8.7 | 10.4 | 7.0 | 5.9 | 5.6 | 5.3 | 5.9 | 6.8 | 8.0 | 5.1 | 9.6 | ||||||||||||||||||||
Ia | 100.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | |||||||||||||||||||||
Ib | 0.0 | 74.2 | 50.4 | 30.4 | 35.2 | 35.6 | 26.1 | 40.4 | 43.2 | 30.7 | 25.5 | 100.0 | |||||||||||||||||||||
II | 99.4 | 66.5 | 31.7 | 26.7 | 20.7 | 19.4 | 18.1 | 16.1 | 20.2 | 21.1 | 17.2 | 98.0 | |||||||||||||||||||||
III | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 99.7 | 100.0 | 0.0 | 0.0 | 100.0 | 0.0 | |||||||||||||||||||||
IV | 0.0 | 100.0 | 0.0 | 0.0 | 71.1 | 8.0 | 99.9 | 100.0 | 100.0 | 0.0 | 100.0 | 0.0 | |||||||||||||||||||||
VI | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
Hudson Plains | NA | 49.5 | 66.9 | 33.1 | 27.4 | 4.0 | 5.1 | 48.9 | 85.3 | 0.0 | 0.0 | 0.0 | 13.0 | ||||||||||||||||||||
Ia | 0.0 | 0.0 | 0.0 | 0.0 | 100.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
Ib | 100.0 | 100.0 | 0.0 | 78.1 | 25.7 | 44.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||||||||||||||||
II | 0.0 | 0.0 | 0.0 | 68.8 | 53.2 | 29.6 | 0.0 | 100.1 | 0.0 | 0.0 | 0.0 | 63.4 | |||||||||||||||||||||
III | 0.0 | 0.0 | 0.0 | 0.0 | 71.1 | 90.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
Canada | NA | 2.6 | 2.4 | 1.9 | 1.6 | 1.1 | 1.5 | 2.2 | 4.0 | 5.5 | 6.7 | 3.3 | 2.4 | ||||||||||||||||||||
Ia | 47.4 | 58.6 | 38.8 | 38.5 | 35.0 | 65.1 | 61.3 | 82.2 | 100.0 | 100.0 | 100.0 | 96.7 | |||||||||||||||||||||
Ib | 38.4 | 22.6 | 15.8 | 10.7 | 12.5 | 12.0 | 17.7 | 25.5 | 24.5 | 27.9 | 14.7 | 25.1 | |||||||||||||||||||||
II | 19.1 | 15.3 | 8.5 | 7.4 | 7.6 | 9.0 | 13.2 | 13.7 | 17.0 | 18.9 | 11.4 | 26.4 | |||||||||||||||||||||
III | 48.7 | 30.9 | 27.5 | 25.7 | 20.2 | 17.7 | 66.6 | 100.0 | 0.0 | 0.0 | 84.7 | 71.2 | |||||||||||||||||||||
IV | 48.3 | 37.9 | 32.9 | 34.6 | 26.5 | 38.2 | 70.3 | 70.9 | 100.0 | 0.0 | 62.3 | 83.6 | |||||||||||||||||||||
V | 98.7 | 85.8 | 94.7 | 78.6 | 64.8 | 86.7 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
VI | 78.5 | 60.9 | 41.8 | 57.4 | 61.7 | 68.9 | 80.7 | 0.0 | 100.0 | 0.0 | 0.0 | 79.3 | |||||||||||||||||||||
Other | 100.0 | 100.0 | 81.6 | 51.5 | 35.3 | 66.7 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 | |||||||||||||||||||||
Source: Canada's National Forest Inventory, revised 2006 baseline (Version 3, December 2013) (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 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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