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題 名 | 紅檜人工林下層疏伐之伐木造材作業量分析=Analysis of the Productivity of Felling and Bucking Operations on Taiwan Red Cypress (Chamaecyparis formosensis) Plantations by Thinning from Below |
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作 者 | 卓志隆; 何邵濬; 余鎮仰; | 書刊名 | 林產工業 |
卷 期 | 31:3 2012.09[民101.09] |
頁 次 | 頁25-32 |
分類號 | 436.412 |
關鍵詞 | 紅檜; 疏伐; 伐木造材; 標準作業量; Chamaecyparis formosensis; Thinning; Felling and bucking operation; Standard operational performance; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究探討31年生紅檜人工林下層疏伐收穫過程中伐木造材之標準工作量評估。試驗地為羅東林區管理處太平山事業區第75林班,疏伐強度依胸高斷面積設定為15%。依立木伐木造材作業時間調查結果,經由標準工時法分析後,製訂合理之伐木造材標準作業量。研究結果顯示實際作業時間佔整體工作時間比例85.8%。以樹高、胸徑、枝下高等基本資料與作業時間的迴歸分析模式可作為伐木造材作業時間之推估。在胸高斷面積疏伐率15%條件下之每人每日伐木造材日標準作業量為9.3 m^3。 |
英文摘要 | Taiwan red cypress plantation-stand of 31 years old, located at Tai-Ping-Shan No. 75 working circle, Luodong Forest Management District Office was selected to evaluate thinning productivity standard by the thinning from below operation. The designed thinning ratio of 15% was chosen with respect to the basal area at DBH. Stand survey and working time were investigated during the felling and bucking process. Both data were used for the analysis of standard time study and establishment of operation performance. The experimental results showed that actual operation time took 85.8% of the total felling and bucking time on the average. The operational time in felling cycle could be estimated according to the regression relationships between working time and tree heights, DBH and height under the tree canopy, respectively. The standard operational performance of felling and bucking operation in this study was 9.3 cubic meters per man, per day as determined by standard time study method. |
本系統中英文摘要資訊取自各篇刊載內容。