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An Approach for Optimizing Residual Diameter Class Distributions When Thinning Even-Aged Stands

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The determination of optimal residual diameter class distributions along with optimal timing of thinning and harvest is formulated as an unconstrained nonlinear program. Two structural characteristics of the problem are noted. A nonlinear programming algorithm is modified to take advantage of these characteristics. An example is used to illustrate the technique. The total number of variables within the formulation can be reduced to a small fraction of active variables. The ratio between active and total variables is approximately 0.3, or an approximate 70% reduction in problem size is experienced. The same amount of reduction would be expected in any similar formulation. Forest Sci 32:871-881.

Keywords: Dynamic optimization; Hooke and Jeeves method; forest economics; nonlinear programming

Document Type: Journal Article

Affiliations: Assistant Professor, North Carolina State University, Department of Forestry, Box 8002, Raleigh, NC 27695

Publication date: December 1, 1986

More about this publication?
  • 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.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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