You are here: Home
/ Publication Information
Title: Optimizing the sequence of diameter distributions and selection harvests for uneven-aged stand management
Author: Haight, Robert G.; Brodie, J. Douglas; Adams, Darius M.;
Source: Forest Science 31(2):451-462
Publication Series: Scientific Journal (JRNL)
Description: The determination of an optimal sequence of diameter distributions and selection harvests for uneven-aged stand management is formulated as a discrete-time optimal-control problem with bounded control variables and free-terminal point. An efficient programming technique utilizing gradients provides solutions that are stable and interpretable on the basis of economic principles. Methods and results are demonstrated using a whole-stand/diameter-class simulator developed for northern hardwoods stands in Wisconsin. Examples in which the objective is present net worth maximization over a 150-year planning horizon with a 5-year cutting cycle suggest two types of optimal equilibrium stand structures: a downward-sloping diameter distribution if large value premiums are assigned to the largest diameter classes and a truncated diameter distribution if premiums for larger trees are gradual or absent. Transition strategies vary in length and harvest pattern depending on the stumpage value function used. It is emphasized that equilibrium management regimes developed with static analysis are not optimal when used as starting conditions in dynamic formulations.
Keywords: Forest economics, optimal control theory, gradient projection method, nonlinear programming
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
XML: View XML
Haight, Robert G.; Brodie, J. Douglas; Adams, Darius M. 1985. Optimizing the sequence of diameter distributions and selection harvests for uneven-aged stand management. Forest Science 31(2):451-462
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility