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    Author(s): Cynthia L. Miner; Nancy R. Walters; Monique L. Belli
    Date: 1988
    Source: General Technical Report NC-125. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 105 p.
    Publication Series: General Technical Report (GTR)
    Station: North Central Research Station
    PDF: View PDF  (10.08 MB)

    Description

    This is a complete reference to TWIGS, a forest growth-and-yield program with management and economic components developed for Lake and Central States tree species. The guide describes how TWIGS models growth and yield and how the model can be applied to obtain the best results. Step-by-step operating instructions are provided for TWIGS and its companion program, TREEGEN, which generates tree lists in readable format for TWIGS. The appendices include equations, coefficients, validation tables, and an example printout of a projection run.

    Publication Notes

    • 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, shobrla@fs.fed.us if you notice any errors which make this publication unusable.
    • 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.

    Citation

    Miner, Cynthia L.; Walters, Nancy R.; Belli, Monique L. 1988. A guide to the TWIGS program for the North Central United States. General Technical Report NC-125. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 105 p.

    Keywords

    growth and yield (simulation), forest stand management (simulation), economics, computer programs (forestry), silviculture, STEMS

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