Integrating Short-Term, Area-Based Logging Plans with Long-Term Harvest Schedules
Procedures are developed and evaluated for integrating short-term, area-based plans with long-term, strata-based harvest schedules. A combination of these two approaches to forest planning provides a spatially feasible, short-term solution that can also incorporate strategic harvest goals over a long-term period. Three basic steps are used to combine the area and strata-based plans: (1) a 15-decade strata-based plan is solved with linear programming (LP) to establish strategic harvest goals; (2) with these goals as guidelines, 3-decade, area-based plans are generated with a random search technique caned Monte-Carlo integer programming (MCIP); and (3) those area-based plans become the first 3-decade solution within 15-decade integrated plans that are solved with LP. Both the harvest units and the road projects within the area-based plan are specified as strict binary variables. MCIP is an effective technique for generating feasible solutions to integer problems encountered in area-based planning. Although no guarantee of optimality can be assured, the technique is a major improvement over manual methods, and it is a practical alternative to mixed-integer programming for identifying feasible alternatives. In comparison to the integrated plans, it was found that the strata-based model consistently overestimated long-term revenues, and consistently underestimated long-term volumes. The integrated plans produced net revenue and volume levels within 10% of the strategic goals established by the strata-based linear program. The case study was conducted in 1987-88 on a forest located in British Columbia. For. Sci. 37(1):101-122.
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Document Type: Journal Article
Affiliations: Professor of Forest Engineering, College of Forestry, Oregon State University
Publication date: 1991-03-01
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- Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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