查詢結果分析
相關文獻
- 杉木實生林與萌蘗林木材材質差異之比較
- 應用振動法評估生物性劣化杉木之性質
- Effect of Density of Taiwania Plantation Wood on Ultrasonic Velocity and Dynamic Young's Modulus
- 纖維飽和點以上含水率對萌櫱林與實生林杉木之超音波速及動彈性係數之影響
- 微密度計法應用於評估杉木實生林與萌蘖林木材年輪構造
- 疏伐及修枝處理對針葉樹材性質之影響
- The Effect of Changes in the Internal Structure of a Schooling Fish on the Estimation Efficiency by Acoustic Methods
- 非破壞試驗技術應用於原木材質評估之可行性研究
- The Use of Stationary Hydroacoustic Transducer to Study Diel and Seasonal Influences on the Distribution of Fish School in Water Adjacent to the Cooling Water Intake of Nuclear Power Plant III
- 杉木之縱向壓縮與靜曲強度之變異性探討
頁籤選單縮合
題名 | 杉木實生林與萌蘗林木材材質差異之比較=Comparison of the Wood Property Differences between Seedling and Sprouting Grown of China-fir |
---|---|
作者 | 陳勁豪; 林法勤; 王松永; | 書刊名 | 國立臺灣大學農學院實驗林研究報告 |
卷期 | 15:3=233 2001.09[民90.09] |
頁次 | 頁191-201 |
分類號 | 436.18 |
關鍵詞 | 杉木; 萌蘗林; 實生林; 比重; 超音波; 橫向振動; 動彈性係數; China-fir; Sprouting growth; Seedling growth; Specific gravity; Ultrasonic; Transverse vibration; Dynamic modulus of elasticity; |
語文 | 中文(Chinese) |
中文摘要 | 本研究主要目的是要瞭解實生林與萌蘗林杉木材質的差異。研究分析結果顯示,實生林木材之超波速(VU)、超音波動彈性係數(EDU)及橫向振動動彈性性係數(EDT),均明顯地較萌蘗林木材高,其他特性並無顯著差異。雖然萌蘗林之木材強度會稍低於實生林,但其差異並不顯著,因此從木材性質觀點而言,也無實際上的差別,意即杉木可以萌蘗林造林的方式取代實生林以降低育林成本,但僅建議以一個世代為限。 |
英文摘要 | We investigated the difference of wood properties between seedling and sprouting grown of China-fir. Statistical results showed that only values of ultrasonic wave velocity (VU), ultrasonic dynamic modulus of elasticity (EDU), and transversal vibrating dynamic modulus (EDT) of lumber produced from seedling growth China-fir were significantly higher than those of sprouting growth, while other properties did not show significant difference. In the viewpoint of wood property, there was no difference in utilization between seeding and sprouting grown although the strength of wood from sprouting was a little weaker than that of seedling. However, the difference was not significant. In other words, the sprouting growth method was an alternative for China-fir in order to reduce the silviculture cost, but it was suggested to carry one generation only. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。