三種桉樹在台灣東部地區生長之研究

Study on the Growth of Three Eucalyptus Species in Eastern Taiwan

陳正豐(Cheng-Fong Chen) ； 洪富文(Fu-Wen Horng) ； 張添榮(Tien-Yung Chang)

《台灣林業科學》 11卷3期 (1996/09) Pp. 233-238

https://doi.org/10.7075/TJFS.199609.0233

摘要

本研究調查生長於台灣東部之花蓮光復地區三年二個月生之赤桉、玫瑰桉及尾葉桉人工林木不同胸高直徑級之總樹高、地際直徑、胸高直徑及樹高3.3,，5.3，7.3，9.3m，…等部位之直徑資料，經分別計算其樹高、連皮材積、和胸高形數之方程式，獲致以下之結果：
赤桉樹高=1.130256+1.429525×DBH-0.032236×DBH^2
玫瑰桉樹高=2.640036+1.221497×DBH-0.026789×DBH^2
尾葉桉樹高=3.046370+0.888726×DBH-0.015651×DBH^2
赤桉連皮材積=0.000113-0.001348×DBH+0.000617×DBH^2
玫瑰桉連皮材積=0.003241-0.001968×DBH+0.000644×DBH^2
尾葉桉連皮材積=0.002656-0.001401×DBH+0.000542×DBH^2
赤桉之胸高形數=0.707497-0.025123×DBH+0.000465×DBH^2
玫瑰桉之胸高形數=0．749356-0.035809×DBH+0.001061×DBH^2
尾葉桉之胸高形數=0.773500-0.031299×DBH+0.000686×DBH^2

關鍵字

桉樹類 ； 樹高 ； 胸徑 ； 連皮材積 ； 胸高形數

並列摘要

In this study the total height, over-ground diameter, DBH, stem diameter at heights of 3.3, 5.3, 7.3, 9.3 m, and other parameters of 38-month-old Eucalyptus camaldulensis (EC), E. grandis (EG) and E. urophylla (EU) grown at Hualien, eastern Taiwan were measured. The tree height (Ht), volume with bark (Vol) and form factor at breast height (Ff) can be estimated by the following equations:
Ht (EC)=1.130256+1.429525×DBH-0.032236×DBH^2
Ht (EG)=2.640036+1.221497×DBH-0.026789×DBH^2
Ht (EU)=3.046370+0.888726×DBH-0.015651×DBH^2
Vol (EC)=0.0001l3-0.001348×DBH+0.000617×DBH^2
Vol (EG)=0.003241-0.001968×DBH+0.000644×DBH^2
Vol (EU)=0.002656-0.001401×DBH+0.000542×DBH^2
Ff (EC)=0.707497-0.025123×DBH+0.000465×DBB^2
Ff (EG)=0.749356-0.035809×DBH+0.001061×DBH^2
Ff (EU)=0.773500-0.031299×DBH+0.000686×DBH^2

並列關鍵字

Eucalyptus spp. ； height ； over bark DBH ； volume with bark ； form factor at breast height