By CBC News Ottawa, September 26, 2019
Nearly half of the National Capital Region is under the cover of trees, according to a new aerial survey of the area.
The survey, billed by the National Capital Commission as the first of its kind, was carried out in the fall of 2018 and winter of 2019 by the University of Vermont in partnership with the NCC and the cities of Ottawa and Gatineau.
Researchers used laser sensor technology to detect every tree at least two metres in height.
The survey showed that overall, 46 per cent of the region is covered in trees. Seventy-six per cent of NCC lands, including Gatineau Park, is under tree cover, while 45 per cent of Gatineau and just 31 per cent of Ottawa is green. The figures for Ottawa and Gatineau exclude NCC lands.
https://www.cbc.ca/news/canada/ottawa/ncc-tree-canopy-ottawa-gatineau-1.5297611