Forest HarvestingColour bar
Following Nature's LeadPage 1Page 2Page 3Page 4Page 5Page 6Page 7Page 8Page 9

Disturbances can occur at two levels -- stand or landscape. A stand is a relatively small group of trees of similar age and species mix. A landscape is a much larger area, generally an entire valley or watershed, that includes many stands as well as non-forested habitats such as streams, lakes, wetlands, meadows and alpine areas. The magnitude and frequency of disturbances determines the age, structure and size of forest stands within a landscape.

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spacer graphic Stand-level disturbance

Within stands, disturbances that affect individual trees or small groups of trees create gaps in the forest canopy. This encourages new growth and promotes biodiversity. These small natural disturbances can be mimicked by various harvesting techniques and silvicultural systems such as selection or small patch cutting. More significant disturbances can be mimicked by larger cutblocks that retain some trees and other habitat attributes characteristic of natural disturbances.

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spacer graphic Landscape-level disturbance