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Canada's Forests Face Climate Threat: Pests, Fires Loom
5 Sep
Summary
- Climate change may increase pest and disease damage in Canadian forests.
- Temperatures could rise 3.5 C by century's end, even with net-zero goals.
- Wildfire smoke can persist in B.C. valleys, reducing visibility.
Canadian forests are projected to face heightened risks from pests and diseases as climate change accelerates. New research indicates that over 80% of the examined forest areas could experience increased damage by the middle of this century. This is attributed to warmer winters aiding pest survival and heat and drought stressing trees, making them more susceptible to outbreaks.
The trend also points to a significant increase in wildfire activity across the country. Federal projections suggest average temperatures could rise by at least 3.5°C by 2100, even if global net-zero emissions are achieved. This warming directly correlates with increased wildfire risk, as dry, weakened trees provide fuel.
Furthermore, wildfire smoke is expected to become a more significant air quality concern, particularly in British Columbia. The province's valley geography can cause smoke to linger, drastically reducing visibility. Cities like Penticton and Kamloops have already recorded hundreds of smoke hours in recent years, a situation anticipated to worsen.
