台灣地區主要用材比重與碳含量測定

Measurement of Specific Gravity and Carbon Content of Important Timber Species in Taiwan

林裕仁(Yu-Jen Lin) ； 劉瓊霦(Chiung-Pin Liu) ； 林俊成(Jiunn-Cheng Lin)

《台灣林業科學》 17卷3期 (2002/09) Pp. 291-299

https://doi.org/10.7075/TJFS.200209.0291

摘要

本研究目的在於建立木材比重與碳含量之碳素固定量轉換係數，以提高台灣地區森林資源與林產品碳吸存量估算時的準確度。試驗材料取台灣地區主要用材共47種（自產材24種，進口材23種），加以測定其比重與碳含量。測定結果顯示，台灣地區自產材碳含量平均值，在針葉樹材為48.21%，闊葉樹材為46.91%，進口材中闊葉樹材為49.08%，均比木材碳含量理論值50%為低。而台灣地區自產材碳素固定量轉換係數值介於0.15-0.36之間。

關鍵字

轉換係數 ； 木材比重 ； 碳吸存量 ； 針葉樹材 ； 闊葉樹材

並列摘要

The purposes of this study were to derive conversion factors from specific gravity and carbon content of timber in order to gain an accurate estimation of carbon sequestration of forest resources and forest products in Taiwan. In this study, the specific gravity and carbon content of 47 main timber species including 24 woods native to Taiwan and 23 exotic woods were measured. The results indicate that the average carbon contents for native softwoods and hardwoods in Taiwan are 48.2 1% and 46.91%, and for exotic hardwoods is 49.06%. All of these values are lower than the theoretical value for the carbon content of wood ~50%. The conversion factors for carbon sequestration of native timbers lie between 0.15 and 0.36.

並列關鍵字

conversion factors ； specific gravity ； carbon sequestration ； softwoods ； hardwoods