Any forested area may be defoliated by more than one insect. Therefore, there can be considerable overlap in the reported figures. The area within which there is moderate to severe defoliation can also include roads, cultivated areas, small lakes or burned areas.
Source: National Forestry Database.
Figures not appropriate or not applicable
Figures not available
Amount too small to be expressed
Nil or zero
Estimated by provincial or territorial forestry agency
Estimated by the Canadian Forest Service or by Statistics Canada