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Pine trees & growth rings
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Pine trees & growth rings

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Radiata pine is a major plantation species grown in Australia. Find out more about this tree species and the growth rings it exhibits.

Radiata pine is a major plantation species grown in Australia. Find out more about this tree species and the growth rings it exhibits.

Published in: Technology, Business

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  • 1. Pine trees & growth rings
  • 2. The science of counting growth rings to work outthe age of trees and wood is called…
  • 3. The science of counting growth rings to work outthe age of trees and wood is called…
    Dendrochronology
  • 4. Radiata pine is a popular tree species grown in plantations in NSW
  • 5. Each year, Radiata pine trees add a growth ring.
    The rings may be thick or thin depending on the growing season.
  • 6. Each year, Radiata pine trees add a growth ring.
    The rings may be thick or thin depending on the growing season.
    Good year, fast growth = thick ring
  • 7. Each year, Radiata pine trees add a growth ring.
    The rings may be thick or thin depending on the growing season.
    Poor year, slow growth = thin ring
  • 8. Native Australian trees like gum trees (Eucalypts) don’t have annual growth rings like pine trees
    They grow evenly all year round, making it hard to count the rings and tellthe age of the tree.
  • 9. Can you count the growth rings of this tree slice to tell the age of the tree?
  • 10. It takes 33 years for a plantation pine tree to be ready for final harvest.
    Did you know?
    1yr
    5yrs
    10yrs
    15yrs
    20yrs
    33yrs
  • 11. Forests NSW sells enough timber to construct 25% of the houses built in Australia every year.
    Did you know?
  • 12. 2011 is International Year of Forests
    Celebrate NSW State forests and all they have to offer…
    Visit us at:
    www.industry.nsw.gov.au/forests