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題 名 | 利用林木位置圖探討孔隙對林木生長之影響=Using Individual Tree Location Map to Explore Gap Influence on Tree Growth |
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作 者 | 馮豐隆; 李宣德; | 書刊名 | 林業研究季刊 |
卷 期 | 24:1 2002.03[民91.03] |
頁 次 | 頁21-30 |
分類號 | 436.12 |
關鍵詞 | 林木位置圖; 樹冠投影圖; 孔隙; 生長模式; Individual tree location map; Crown closure map; Gap; Growth model; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究的目的是以馮、李(2000)GIS方法繪製不同密度的柳杉永久樣區之林木位置圖,配合胸高直徑-樹冠迴歸式繪製樹冠投影圖,觀察其孔隙變化情形,並嘗試由Schnute單株生長模式及其參數變化來探討孔隙對林木生長產生的影響。結果顯示,孔隙變化愈大,其生長潛力愈強及其參數變化愈大,建議無論林分生長模式與單株林木生長模式,宜加入表示孔隙的參數。 |
英文摘要 | In the study, the tree location map of 5 different density of permanent sampling plots (PSPs) in Cryptomerria japonica were made with the GIS approach of Feng & Lee (2000) at first. Then, tree crown closure maps were made to investigate the gap change in different ages. The parameters of Schnute individual tree growth models were used to explore the change of gap influence upon the tree growth. The results showed that the wider the gap, the larger carrying capacity of the growth and parameters of the Shnute model. The gap variables were suggested to put in the stand growth model and individual tree growth model for estimating efficiently. |
本系統中英文摘要資訊取自各篇刊載內容。