For decades, Canada was known as a peaceful, stable country, rarely making international headlines. But over the past decade, the nation’s lush forests have frequently become the center of global attention due to recurring wildfires.
Wildfires in Canada are no longer rare or surprising. They’ve become a seasonal reality, something people have learned to live with. However, in an era of advanced technology, allowing fires to disrupt ecosystems feels unacceptable.
So, what causes wildfires in the first place? And more importantly, is there anything we can do to prevent them? In this article from SenseNet, we’ll explore these key questions. Keep scrolling.
What Triggers Wildfires in Canada?
To start a fire, three essential elements must be present:
- Dry fuel (like leaves, grass, shrubs, and other vegetation)
- Oxygen from the surrounding air
- Heat to ignite and sustain combustion
Whenever these three elements come together, a fire can start and forests can burn.
But what can bring these elements together? The answer is simple: nature itself. One of the most common natural causes of wildfires is lightning. However, that’s just part of the story.
Human Negligence: The Leading Cause of Forest Fires
The majority of wildfires are not natural at all. They are caused by human carelessness.
A lit cigarette tossed out of a moving car
A campfire left smouldering beside a tent
Or even a seemingly harmless outdoor adventure can lead to devastating forest fires.
Natural Causes: Lightning and Climate Change
One of the primary natural causes of forest fires is lightning. There are generally two types of lightning:
Cold lightning: Short in duration and rarely starts fires.
Hot lightning: Although it carries less voltage, it lasts longer and creates intense heat making it the main culprit behind naturally occurring wildfires.
What makes lightning so dangerous is its unpredictability. Even if meteorologists can forecast storms, it’s nearly impossible to predict the exact location where lightning will strike.
That’s why early detection systems have been installed in many regions to help spot wildfires before they spread, preventing potential damage to wildlife, ecosystems, and human life.
The Role of Climate Change in Lightning Strikes
What’s behind the growing intensity and frequency of lightning? Climate change.
Longer, hotter summers raise ground temperatures.
Increased carbon emissions create ideal conditions for powerful lightning storms.
A 2014 study revealed that for every 1°C rise in temperature, the likelihood of lightning increases by 12%.
In British Columbia, hot lightning is responsible for nearly 60% of annual wildfires. But lightning is only part of the equation. Dry vegetation is the fuel.
Due to higher temperatures and shorter winters, plant life dries out faster, creating vast areas of fuel.
Take California’s 2021 wildfire, for instance it was triggered after 61% of vegetation dried up in just a few months.
A Harsh Reality: Wildfires Are Here to Stay
The truth is that natural wildfires are becoming inevitable. There’s little we can do to stop them from starting. However, by investing in early wildfire detection systems, we can identify fires in their infancy and prevent them from spreading out of control.
Human-Caused Wildfires: Carelessness with Catastrophic Consequences
Another major cause of forest fires in Canada is human negligence, whether intentional or accidental. From a casual camping trip deep in the woods to tossing a lit cigarette into dry brush, the triggers vary, but the outcome is often the same: devastation.
According to government sources, nearly 40% of wildfires in British Columbia are caused by human activities. In the United States, this number is even more alarming, with approximately 85% of wildfires being linked to human actions.
Can We Prevent Human-Caused Wildfires?
The good news? All human-caused wildfires are entirely preventable. While there’s little we can do to stop lightning strikes or heat waves, we can change our behaviours.
Efforts to combat global warming, such as reducing carbon emissions and transitioning to renewable energy can also help reduce the conditions that make natural fires more likely. Stable temperatures and increased rainfall contribute to moist vegetation, reducing the amount of dry fuel available to ignite fires.
Policy and Technology: The Two Pillars of Wildfire Management
Governments worldwide are implementing strategies to reduce wildfire risk. For example, in 2022, U.S. President Joe Biden authorized funding to protect over 20 million acres of at-risk forest land to prevent potential wildfires.
In Canada, early wildfire detection systems like SenseNet are being deployed. These systems use advanced technologies to identify and contain fires before they grow out of control.
Tools used in these systems include:
- Smoke detection sensors
- Drone-based imaging
- Real-time alert apps
- AI-driven analysis tools
Together, these tools help quickly detect fires, even in the most remote corners of the forest, and alert local authorities in time for effective intervention.
Final Thoughts: Protecting Nature Starts With Us
When it comes to human-caused wildfires, prevention starts with responsibility. Small changes in behaviour can prevent large-scale environmental disasters.
Each year, massive portions of our natural ecosystem are destroyed, replaced not by new growth, but by ashes and barren land.
Let’s not burn down the house we all live in.