頁籤選單縮合
題 名 | 臺大實驗林水里卡桐生長量試驗生長之研究=Growth Studies of Anthocephalus chinensis ex Walp at Shuili |
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作 者 | 王亞男; 劉子棻; 汪大雄; | 書刊名 | 國立臺灣大學生物資源暨農學院實驗林研究報告 |
卷 期 | 24:1=267 2010.03[民99.03] |
頁 次 | 頁31-39 |
分類號 | 436.259 |
關鍵詞 | 卡桐; 生長量; Anthocephalus chinensis; Growth; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究旨在瞭解臺大實驗林水里卡桐生長量試驗(Growth study on Anthocephalus chinensis (Lam.) A. Rick. ex Walp at Shuili)因濫伐及韋恩颱風破壞後,經過26年的林木生長研究。結果顯示:本試驗地於2004年(林齡19年)始有調查紀錄,留存林木數量256株(存活率88.27 %),林木的平均胸徑為21.8㎝,其中最大胸徑為53.1㎝,最小胸徑為3.6㎝,其立木度為853株/ha;2010年(林齡25年)時的調查留存林木為227株,存活存78.27 %,林木的平均胸徑為31.7cm,其中最大胸徑為63.5cm,最小胸徑為4.2 cm,立木度則為757株/ha,可見其生長情形差異極大。在2004-2010間,雖然自然枯死率達10.0 %,每公頃胸高斷面積卻有38.31%的成長,材積成長達30.64%。應用Weibull機率密度函數模擬直徑分布有明顯的晉級生長,立木度雖減少,胸高斷面積卻增加,顯示此林分具有良好的生長潛力。此外,胸徑生長呈左偏常態分佈。 |
英文摘要 | This growth research aims at a 26-year stand of Anthocephalus chinensis (Lam.) A. Rick. ex Walp at Shuili after disturbances by illegal loggings and Typhoon Wayne in 1986. The result shows that there are 256 trees remained ( survival rate 88.27 %), and the stand averaged DBH is 21.8 cm ( with maximum 53.1cm and minimum 3.6 cm) with stocking density of 853 trees per ha according to the record from 2004. There were 227 trees remained at the stand age of 25 (2010), and the average DBH was 31.7cm ( with maximum 63.5cm and minimum 4.2 cm) with stocking density of 757 trees per ha. We found that although the mortality rate went to 10.0 between 2004 and 2010, average basal area increased 38.31 % and the volume growth rate reached 30.64 %. After these data were fitted with Weibull probility distribution function, we found an obvious ingrowth, declined stocking and increased average basal area, indicating great potential of stand growth. Besides, growth curve of trees’ DBH is a left-skewed normal distribution. |
本系統中英文摘要資訊取自各篇刊載內容。