頁籤選單縮合
題 名 | 重要生育地因子影響紅檜造林木側枝形成分叉幹之研究=Correlations between the Occurrence of Forks in the Bole of Taiwan Red Cypress and the Site Factors |
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作 者 | 詹明勳; 王亞男; 姜家華; 林志謀; | 書刊名 | 中華林學季刊 |
卷 期 | 31:3=122 1998.09[民87.09] |
頁 次 | 頁239-250 |
分類號 | 436.26 |
關鍵詞 | 紅檜; 分叉幹; 形數; 生育地因子; 造林木; Chamaecyparis formosensis; Stem forking; Form factor; Site factors; Planted tree; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究旨在探討臺灣不同生育地之紅檜造林木側枝形成分叉幹之類型, 並尋求其 側枝形成分叉幹與局部氣候及位置因子之關係,本文試圖以海拔高度、方位、相對有效光合 作用輻射值等因子解析紅檜造林木側枝形成叉幹的可能原因。以形數描述側枝形成分叉幹之 造林木的形質變化。 依據 28 個調查樣區資料顯示,紅檜造林木側枝形成分叉幹比率佔 30 %, 分叉的部位以發生在 0-0.5m 處達 80 %為最多, 分叉以分歧 1 叉或 2 叉的類型佔 75 %為最多, 同時在樹高 0.5-1.3 及 1.3m 以上處發生側枝形成叉幹的狀況很少, 僅有 20 %。 由研究結果得知造林木側枝形成分叉率與局部環境因子關係密切,受不同造林地種 類的影響亦大。 |
英文摘要 | The characteristics of forked boles, formed from lateral branches, of Taiwan red cypress (Chamaecyparis formosensis), and their occurrence in relation to site factors, such as altitude, aspect and relative photosynthetically active readiation (PAR), were studied in 28 plantations in Taiawn. The form ratio was used to describe the shape of the trees. Around 30% of the trees had forked boles with 75% of these trees having 1 or 2 forks. Up to 80% of the forks occurred from 0-0.5 m from the ground, while less than 20% occurred above 0.5m. The occurrence of forks, formed from lateral branches, in the boles of Taiwan red cypress trees was strongly correlated to the relative PAR of the different plantation types and site factors. |
本系統中英文摘要資訊取自各篇刊載內容。