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How does sustained-yield forestry provide a continuing supply of timber?
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forestry
Trucks on a road transporting recently harvested logs near Sabah's border with Kalimantan in Borneo.
Sustained-yield forestry ensures a continuous supply of timber by balancing the annual harvest and losses—such as those caused by fire, insects, or diseases—with the forest's annual growth. By managing the forest as a renewable crop, foresters can harvest timber indefinitely.1
Key components of this management strategy include:
- Rotation Periods: Foresters determine the age at which a crop is harvested before being succeeded by the next generation. Depending on the species and region, these periods range from short cycles (e.g., 7–20 years for pine or eucalyptus) to long-term growth cycles of up to two centuries for hardwoods like oak and beech.1
- Regeneration: To maintain the supply, harvested trees are replaced through natural or artificial regeneration, ensuring a new generation of trees is established.2
- Intermediate Cuttings: Throughout the rotation, foresters perform systematic thinning to improve stand quality, regulate growth, and provide early yields before the final harvest.12