Stage One:
Young Forest
Stage Two:
Growing Forest
Stage Three:
Mature Forest
WhitecourtGrande PrairieSlave LakeAthabascaCochrane

Legend

  • 360° Forest Tour
  • Visit the Demonstration Forests

Forests provide different benefits at different stages of maturity.

Younger trees capture carbon at a greater rate than mature forests. Some animals thrive best in established forests, while others do best in younger ones. Some species even prefer areas that have been recently harvested or burned. The key to making our forests the best they can be is helping to maintain a healthy balance of different tree species and ages across the province.

Stage One:
Young Forest

Where sections of older forest have burned or been harvested, a young forest has room to emerge. In the case of harvesting, Alberta’s forestry companies are required to replant the area with a similar mix of trees and help the new forest establish itself. Young forests are open enough for sun-loving plants to grow in, and those plants are a food source for iconic Alberta wildlife.

Stage Two:
Growing Forest

The middle stage of a forest’s life is the longest – over the course of this stage, the forest continues to mature and evolve. Trees reach the prime of their life, and the mixture of cover and open space attracts a new host of plants and animals. A complex natural ecosystem emerges, and the forest becomes self-sustaining.

Stage Three:
Mature Forest

The trees in mature boreal forests have reached full size and are densely packed together. Large amounts of carbon are stored in mature forests, and they’re key to the survival of wildlife species like caribou. Trees at this stage start to be more susceptible to fire, disease and insect infestations, though, and most Alberta trees have a maximum lifespan of 150 years under ideal conditions. Without strategic forest management, historical fire patterns show that most Alberta forests would burn every 50-100 years.

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Learn: Mountain Pine Beetle

Protecting Our Pine Trees

Insect infestations, like fire, can play an important role in the life of our forests by releasing nutrients and removing sick or aging trees. But in some cases, things go too far and a large-scale infestation does more harm than good. In British Columbia, the mountain pine beetle has created a crisis in recent years by killing more than half of the province’s mature pine trees. Insect infestations are also the leading cause of tree loss in Alberta right now. The mountain pine beetle infests trees by embedding itself in their trunks. After implanting itself, it transmits a fungus that kills the tree by cutting off the flow of water and nutrients. Young healthy trees have the ability to defend itself against the mountain pine beetle by developing a toxic resin. By monitoring the situation closely and proactively harvesting trees that are most susceptible or already infested, the forest industry has been able to slow the beetle down

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