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The choice of the optimal sawtimber harvesting system (a theoretical approach based on mathematical programming)

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  • An extension of the sensitivity analysis of linear programming, called parametric programming is used in determining optimal sawtimber logging system mix. The five logging systems under study are manual log-length, system, log-length processor and harvester systems, manual tree-length system and tree-length harvester system. In conditions where it is not exactly known how much the monetary value of the final saw wood varies as a function of the logging system used, the parametric programming approach gives the ranges for those values. If the market value of the saw wood is the same no matter what logging system is used, it is economical to use tree-length harvesting systems under the assumptions of the study. However, if the difference in value is more than 3.90 $/m3 (*14.85 FmJc/m3) in favor of log-length systems, the tree-length systems are completely replaced by log length systems in the conditions of Southern Finland. These results cannot be generalized, however, since each sawmill must be regarded as a special case. The approach developed for this study can be used to solve the problem in each particular case.
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file details Mikkonen__Esko_MF.pdf 2017-12-06 Pubblico Scaricare