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題名 | 森林經營的立木材質評估=The Evaluation of Standing Tree Quality of Forest Management |
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作者 | 邱志明; 王松永; 林振榮; | 書刊名 | 林產工業 |
卷期 | 23:3 2004.09[民93.09] |
頁次 | 頁263-274 |
分類號 | 436.71 |
關鍵詞 | 立木; 育林施業; 超音波法; 應力波法; 打音法; 鑽孔抵抗方法; 電腦斷層圖; Standing tree; Silvicultural practice; Ultrasonic method; Stress wave method; Tap tone; Drilling resistance method; Computer tomography; |
語文 | 中文(Chinese) |
中文摘要 | 本篇報告的目的在介紹數種常用的立木材質檢測及評估技術,其方法包括目視外檢測、打擊法、聽診器法、超音波法、應力波法、打音法、鑽孔抵抗技術、微破壞儀強度檢測法、軟X-ray及微密度計檢測、生長錐取樣樹蕊檢測及化學分析法。木材評估的指標包括有健全樹木外表診斷、音速、動彈性係數、木材密度、年輪特性(秋、春材寬度及密度)、解剖特徵(管胞[纖維長度]及微纖維傾斜角)、破壞強度、樹幹電腦斷層圖、電的抵抗性及木材化學組成分等等。同時,立木材質的研究結果及評估方式,是可以應用於調整育林經營措施,森林保護及提供資訊作為林木經營撫育之參據。 |
英文摘要 | The purpose of this paper is to introduce the several testing and evaluating techniques of standing tree. The measures include visual tree assessment, hitting, stethoscopy, ultrasonic method, stress wave method, tap tone, drilling resistance method, fathometer test, soft X-ray and micro-densitometer, increment core sampling and chemical analysis. The indexes of wood evaluation contain sound tree appearance, sound velocity, dynamic modulus of elasticity, wood density, ring traits (earlywood and latewood width and density), anatomic characteristics (tracheid/fiber length and microfiber angle), modulus of rupture, computer tomogralphy of trunk, electric resistance, and chemical component etc. In addition, the results of research and application for assessment of standing tree are used to adjust silvicultural practice, forest protection and provide information for wood utilization. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。