Table 18.0a. Relative standard errors (%) of total above-ground biomass on forest land by species group and age class in Canada.
Species group Age (years)
1-20 21-40 41-60 61-80 81-100 101-120 121-140 141-160 161-180 181-200 201+ Other1
Unclassified 63.0 100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.8
Unspecified hardwoods 8.2 12.1 17.6 50.3 23.0 65.6 95.1 0.0 0.0 0.0 0.0 80.0
Other hardwoods 22.5 13.0 12.1 10.0 13.9 23.9 39.1 48.0 58.0 94.5 53.0 72.7
Maple 17.4 8.8 5.7 6.0 6.5 11.8 29.2 35.5 74.7 0.0 78.4 82.2
Birch 7.2 5.2 5.1 4.9 5.2 11.0 14.5 26.2 39.2 56.2 62.7 41.8
Poplar 5.9 3.8 4.0 3.5 3.7 5.9 9.0 14.7 29.3 31.3 34.8 45.7
Unspecified conifers 6.8 7.3 17.6 31.1 29.0 0.0 0.0 0.0 0.0 0.0 0.0 60.6
Cedar & other conifers 25.0 15.6 14.9 13.0 9.7 12.4 14.0 29.2 25.9 21.9 8.3 100.0
Larch 16.3 6.6 6.0 5.8 7.8 8.6 10.2 14.2 24.1 38.4 26.0 62.7
Douglas-fir 26.4 25.1 20.5 20.7 13.4 11.7 12.5 12.6 15.5 17.9 14.7 0.0
Hemlock 21.4 15.9 15.7 20.2 17.0 16.9 14.7 21.6 16.5 24.1 6.2 0.0
Fir 10.2 5.0 4.3 5.3 4.6 7.7 7.2 9.1 10.2 10.8 6.7 50.7
Pine 6.4 4.1 4.7 4.5 4.6 5.6 6.3 8.9 13.6 16.7 12.9 40.8
Spruce 6.7 3.3 2.7 2.2 2.0 2.1 2.2 3.6 6.7 9.4 6.2 19.0
Source: Canada's National Forest Inventory, combined remeasured (2007-2017) and projected (2006-2017 with NFI projection system) data (Version 1, July 2021) (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.