Abstract
Abstract Optimal control singular path solutions for determining economically efficient thinning schedules have been found to have both concave and convex shapes. This study examines the characteristics of such paths and shows that the shape of the singular path does not necessarily determine whether the rate of thinning should increase or decrease with time. Empirical tests show the optimal thinning solution to be dependent on the parameters used in the growth equation, specifically the aging function used in ensuring the aging and dying processes are accurately represented in the model. Most applications have derived parameters resulting in decreasing rates of thinning and primarily convex singular paths. For. Sci. 37(6):1632-1640.
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