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題名 | 杉木原木最適造材之經濟分析= |
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作者 | 陳麗琴; |
期刊 | 林業試驗所研究報告季刊 |
出版日期 | 19870900 |
卷期 | 2:3 1987.09[民76.09] |
頁次 | 頁227-240 |
分類號 | 436.412 |
語文 | chi |
關鍵詞 | 杉木; 原木; 造材; |
中文摘要 | 現今伐木業者所使用造材之方法,多屬經驗法則,能否達到最適經濟 價值則無法得知,本文特別著重於研究有效的方法,使用作業研究之動態規劃 (Dynamic Programing)中之正向解法(positive solution method) 尋求最有利之造材 方法。本研究係採用中部地區杉木市場規格與價格,並考慮造材應予之延寸及多 種原木截取的可能長度,於動態規劃時,可作較實際與精密之多層決策,提供了 杉木從8m到24m長之幹直而無缺陷之伐倒木及不同直徑下之最佳造材方法,並 經證明此法比經驗法更能提高林木利用價值,及伐木業者之利潤。 |
英文摘要 | Generally, logger uses his experience to do bucking decision. Whether optimal economic return can be achieved by this method is not known. In this study, based on log size and its price in China-fir log market in central Taiwan, Dynamic programing is conducted for optimal bucking decision in consedertion of trim allowance and cutting size at the same time. In this analysis, a much practical and precise multiple-stage decision can be made to provide better bucking patterns for straight, non defective timbers of 8 to 24m in length and different diameters. This approach is proved to be better than decision by experience, and of course, high efficient utilization of timber and better profit of logger are increased. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。