Duizendjarige den

The Duizendjarige den was a scots pine in the Wolfhezerbossen near Wolfheze, Netherlands. The tree fell down at 28 May 2006. It is estimated that the tree was nearly four hundred years old.[1]

De Duizendjarige den painted by Johannes Warnardus Bilders (ca. 1850)

The tree did not show any sings of illness but the trunk was hollow. The trunk had a perimeter of 430 centimeters and was 22 meters long.[2] It is estimated that the tree is germinated around the year 1600 and that it was one of the oldest trees in the Netherlands before it fell down.

The name Duizendjarige den is thought up during the second half of the nineteenth centaury by a group of landscape painters connected with the Oosterbeekse school.[3]

Estimating the age

The most reliable estimation of the age is according to Xander van der Burg done by E.J. Dik with the help of a branch that broke off the tree in 1971. With the help of an accretion drill it was possible to drill a piece of wood out of the branch with as result that the growth rings could be counted. The branch had a total of 238 growth rings and the researchers concluded that the tree must be around 400 years old.

The calculation has taken place in 1995 which makes it 24 years after the branch broke off the tree. They estimated that it took four years for the tree to reach chest height and which sets the minimum age of the tree at 266. However, a part of the drill core was missing so the researchers estimated that the tree was probably a hundred to a hundred and fifty years older.[4]

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References
  1. "'Duizendjarige' den in Wolfheze zomaar omgevallen". Geschiedenis 22=4 (in Dutch).
  2. "Duizendjarige den". Bomeninfo (in Dutch).
  3. "Wandelen met wetenswaardigheden" (PDF). VVV Arnhem-Nijmegen (in Dutch). VVV. Archived from the original (PDF) on 2012-07-22.
  4. "Jaarringen versus geruchten. .. De leeftijd van oude grove dennen in Nederland" (in Dutch).

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