In the decision model developed, determination of a harvest system regime is expressed as a multiple-objective decision. Dept. of Geog. A number of models have been developed for the management of forest resources. Many solution methodologies involve identifying an optimal or near optimal solution for such models, without attempting to identify spatially different alternatives. We address the need to search for good but spatially different alternatives and present an application.
Explicit assignment is essential for assessment of many aspects of ecological sustainability.
Criteria of economic efficiency, pattern, habitat and structural dynamics are considered. A case study of the northern spotted owl in the Olympic Peninsula of Washington state is summarized. Because the habitat choice variables involve semi-permanent retention of old growth, a static model was used. Carrying capacity and connectivity functions are developed from an extant simulation model. Both models are used together in evaluating the current owl plan.