Simultaneous Optimization of Thinnings and Rotation with Continuous Stocking and Entry Intervais

Abstract

Optimal thinning interval and rotation length for an even-aged forest stand can be determined simultaneously by nonlinear programming with a flexible polyhedron. The optimal combination is found by sequentially solving a family of problems with increasing numbers of thinnings until the objective function (maximum present net worth) begins to decline. Such solutions are applied to technical data on Douglas-fir on site index 140. This approach is compared with formulation by dynamic programming. Forest Sci. 26:338–346.