Upper stem bark thickness

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• Subject: Upper stem bark thickness
• From: JIM GOUDIE 387-6535 <JGOUDIE@galaxy.gov.bc.ca>
• Date: Wed, 10 Nov 1993 02:22:00 +0200
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  Geoff Wood:
     In response to your query about upper stem bark 
  thickness, we have found through a substantial amount of stem 
  analysis data that in most coniferous species found in British 
  Columbia, the relationship between diameter inside bark and 
  diameter outside bark is very linear and passes through the 
  origin; that is, the ratio of inside to outside bark diamters 
  is fairly constant along the stem.  For example, the ratio for 
  Douglas-fir is about 0.91.  The only exception to this model 
  we have found is one localized population of lodgepole pine 
  which had an abnormally low ratio (greater than expected bark 
  thickness) near the base of the tree but the relationship 
  between outside bark and inside bark diamters linearized above 
  about 2m in height.  Thus, you may need to quickly climb or 
  distructively sample some trees to verify this model.
  
  I hope this helps solve your problem.
  
  Regards,
  Jim Goudie
  Research Branch
  B.C. Ministry of Forests,
  Victoria, B.C. Canada V8W-3E7
  (604) 386-9282

• Upper stem bark thickness
• From: bever@erim.org (Dave Beverstock)

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