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題 名 | 以地景生態理論探討東北季風對南仁山森林生態系之影響=Using Landscape Ecological Theory to Study the Effect of Northeast Monsoon on Nanjenshan Forest Ecosystem |
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作 者 | 陳朝圳; 陳正華; | 書刊名 | 中華林學季刊 |
卷 期 | 36:4=133 2003.12[民92.12] |
頁 次 | 頁389-396 |
分類號 | 436.12 |
關鍵詞 | 地景生態; 地理資訊系統; 東北季風之影響; Landscape ecology; GIS; Northeast monsoon impact; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究係以地景生態理論,探討東北季風對南仁山森林生態系之影響,利用1976與1997年之航空照片為材料,以立體鏡判釋出21種土地利用型,並轉繪成1/5000之土地利用型圖。為利於地景結構與動態分析,以地理資訊系統為工具,進行土地利用圖層之數化,計算Shannon’s多樣性及嵌塊體的平均碎形維度值指數。不同時期之地景指數,以t值檢定其間之差異,結果顯示南仁山森林生態係21年間地景變化顯著,地景多樣性有逐漸降低之趨勢。東北季風影響區之地景多樣性、碎形維度較非東北季風影響區為高且地景要素轉移機率較低,其中密生矮叢轉移機率最低僅為4.60%,顯示東北季風使該地區之林分維持低矮密生狀態。 |
英文摘要 | We studied the Northeast Monsoon impact on Nanjenshan Forest Ecosystem process by landscape ecology. Land use maps from two years (1976 and 1997), with a scale of 1/5000 derived from interpreting aerial photographs, were used in this study. Using the Geographic Information System (GIS), 21 land use categories were digitalized. Landscape structure and dynamics analyses were quantified by a series of indices including Shannon’s diversity and mean patch fractal dimension ices. T-value as a rule was used to test the difference of landscape in different periods. Landscape change of Nanjenshan Forest Ecosystem was quite significant in 21 years. Diversity indices were decreasing. The impact of northeastern ratio of landscape element, for example, in the northeastern monsoon disturbed area the transition ratio (4.60%) of dense-shrub was the lowest. The impact of northeastern monsoon could keep the stand in a status of dense-shrub. |
本系統中英文摘要資訊取自各篇刊載內容。