ringbark

• ring-bark

From ring +‎ bark.

ringbark (third-person singular simple present ringbarks, present participle ringbarking, simple past and past participle ringbarked)

1. To remove the bark, phloem, and cambium from a tree in a ring all the way around its trunk, thereby normally killing the tree.
   • 1888, “An Act to regulate Ringbarking on Crown Lands and to limit claims for compensation under the fifteenth section of the "Lands Acts further Amendment Act of 1880."”, in Public Statutes of New South Wales, page 19:

     After the passing of this Act no lessee of Crown Lands shall ringbark any trees on Crown Lands unless he be the holder of a permission to ringbark under the hand of the Minister.

Ring-bark seems about twice as common as ringbark (without hyphen) in books. Girdling is much more common in the US.