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A method for assessment of recoverable volume by log types


, : A method for assessment of recoverable volume by log types. New Zealand Journal of Forestry Science 9(2): 225-239

A method was described for assessing the recoverable volume by log types of a single species stand of trees shortly before harvesting. The method takes into account the influences on yield of stem quality and malformation, and of log specifications and preferences. Trees are cruised for quality and malformation. No attempt is made to divide trees into logs in the field. During computer analysis of the inventory data, lists of log specifications and values control a dynamic programming optimization process which estimates the potential yield from each stem. A test of the method at 10 clearfelling sites indicated that good results were attainable, the overall error in recovered volume being 3.7%. An operational system based on the method is now being used by the New Zealand Forest Service.

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