The overall forest cover in Canada is now 91%, or what it was at the time of Champlain. We've lost 9% because of cities and farming. The rate of deforestation in Canada, according to the latest UN figures, is zero because we replant for everything we take out--usually two or three seedlings. Sometimes it's natural. But we've managed to sustain Canada's forests.
When you talk about the forestation of urban areas, it's never been our preoccupation. We provide trees here and there in our community building and social relations, but I suppose if the cities wanted us to plant and harvest, we might come.