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Forestry 1990 63(2):161-175; doi:10.1093/forestry/63.2.161
© 1990 by Institute of Chartered Foresters
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Urgency Index Ratios: a Simple Tool for Forest Management

S. J. GRAY and COLIN PRICE

School of Agricultural and Forest Sciences, University College of North Wales Bangor, Gwynedd, LL57 2UW, Wales

Traditional forest economics deals with regularly-ordered activities. For many reasons, however, choices must often be made among conflicting operational priorities. In these circumstances, maximizing net discounted revenue per hectare does not maximize global profit. Priorities for action should be chosen in order of urgency index ratio, defined as the cost of delaying an operation divided by the units of limited resource needed to undertake the operation. Forest managers tend to use informal and sometimes conflicting rules to assign priorities among uses of limited resources. These priorities often differ from those indicated by urgency index ratio. Urgency index ratio can be determined by simple calculations based on readily-available data. The concept can be extended to include multiple constraints.


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