Date post: | 17-Jan-2015 |
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Pine trees & growth rings
The science of counting growth rings to work outthe age of trees and wood is called…
The science of counting growth rings to work outthe age of trees and wood is called…
Dendrochronology
Radiata pine is a popular tree species grown in plantations in NSW
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
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
Each year, Radiata pine trees add a growth ring.The rings may be thick or thin depending on the growing season.
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 tell the age
of the tree.
Can you count the growth rings of this tree slice to tell the age
of the tree?
1yr
It takes 33 years for a plantation pine tree to be ready for final harvest.
Did you know?
5yrs
10yrs
15yrs
20yrs
33yrs
Did you know? Forests NSW sells enough timber to construct 25%
of the houses built in Australia
every year.
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