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    Description

    Modeling ground-based timber harvesting systems with an object-oriented methodology was investigated. Object-oriented modeling and design promote a better understanding of requirements, cleaner designs, and better maintainability of the harvesting simulation system. The model developed simulates chainsaw felling, drive-to-tree feller-buncher, swing-to-tree single-grip harvester performing felling, and grapple skidder and forwarder in extraction activities. The model can be used to generate stands of trees, simulate felling and extraction processes, and analyze results in terms of cost and productivity. It also takes into account traffic intensity level of extraction machines across the sites and other operational factors. The model was used to evaluate the interaction of stand variables, harvest treatments, machines, and extraction patterns. The results suggest that using two main skid trails to harvest a block minimized traffic intensity. The model can be used to evaluate alternative skidding configurations and their impact on cost, production, and traffic intensity.

    Publication Notes

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    Citation

    Wang, Jingxin; LeDoux, Chris B. 2001. Modeling ground-based timber harvesting systems using computer simulation. In: Proceedings of the 23rd annual meeting of the council on forest engineering; 2000 September 11-13; Kelowna, B.C. Corvalis, OR: 1-7.

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https://www.fs.usda.gov/treesearch/pubs/14453