1. 
   Ring Barking
   Also called Girdling, involves physical damage to the bark on the stem which destroys the internal tissues that transport water and food. This results in the death of the tree.
   Found op http://www.treesurgeonsmanchester.com/page/glossary_of_terms
   
   
2. 
   Ring Barking
   Also called Girdling, involves physical damage to the bark on the stem which destroys the internal tissues that transport water and food. This results in the death of the tree.
   Found op http://www.wilbytree.co.uk/glossary.html
   
   
3. 
   Ring-barking
   The removal of bark and the immediately underlying living tissues from a ring around the stem or trunk of a tree or shrub. This severs the route of transport of leaf products down to the roots.
   Found op http://www.blackwellpublishing.com/Townsend/Glossary/GlossaryR.html
   
   

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