Abstract
ROTATION2 is a computer program designed to simplify the calculation of optimal rotations for even-aged stands based on seven criteria and to facilitate comparisons among outcomes. Mean annual increment, money yield table, forest rent, land expectation value, present net worth, internal rate of return, and financial maturity are included in the program, which requires inputs of timber price, stand establishment cost, stand management cost, land cost, a rate of interest, and volume yield data. Program outputs are displayed in tabular format and values corresponding to the optimal rotation age for each of the criteria are indicated. The program is written in Microsoft Excel version 95 and will operate on all computers with Windows version 95 or later as the operating system. An example is presented based on ponderosa pine (Pinus ponderosaDougl. ex. Laws.) and timber management expenditures and revenues approximating those currently encountered in the Sierra Nevada and southern Cascade Mountains. Possible program users include natural resource managers, educators, and extension personnel.
Published Version
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