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研究生:凌宇武
研究生(外文):Yu-Wu Ling
論文名稱:棲蘭山地區台灣樹空間型式之分析
論文名稱(外文):Spatial Pattern Analysis of Sassafras randaiense(Hay.) Rhed. at Chilan Shan, Northeastern Taiwan
指導教授:關秉宗
指導教授(外文):Biing T. Guan
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:森林學研究所
學門:農業科學學門
學類:林業學類
論文種類:學術論文
論文出版年:2000
畢業學年度:88
語文別:中文
論文頁數:71
中文關鍵詞:台灣樹空間型式棲蘭山
外文關鍵詞:SassafrasSpatial patternChilan Shan
相關次數:
  • 被引用被引用:3
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  • 下載下載:23
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族群是由個體組成,族群內個體的組合有一定的規律性,族群棲息地內生物(種內、種間)與非生物(氣候、地形、土壤)間相互作用的關係,使的族群在一定空間內個體分佈有一定型式。本文以棲蘭山地區台灣樹族群為對象,希望經由空間型式分析瞭解台灣樹的空間型式與台灣樹個體間的關係。
空間型式分析包括樣區法與距離法,樣區法中以連續樣區配對法分析整個林份之空間型式;以距離法分析單木之空間型式,包括,最近鄰樹法、順序法、適合度檢定、趨勢分析及Logistic迴歸分析。
研究結果顯示此區台灣樹族群為聚集型式;胸徑0∼10cm、10∼20cm、20∼30cm的樹為聚集型式;30cm以上的樹為逢機型式。隨鄰樹順序之增加胸徑不會有變大或小的趨勢。距離或方向不會影響鄰近樹出現大或小的機率。距離、方向、胸徑差三個變數之間沒有關係,三者之間並不會互相影響。
Spatial patterns of a plant community determine the intensity and mode of local competition, they may also induce habit heterogeneity through the differential modifications of soil and microclimate. As an on going project to understand the population biology and ecology of Taiwan sassafras (Sassafras randaiense Rhed.), this study focused on the spatial patterns of that species in a stand at Chilan Shan, northeastern Taiwan.
To examine the spatial patterns of Taiwan sassafras at different resolution, both quadrat and distance approaches were used in this study. For quadrat approach, which was used to examine the spatial patterns at a stand level, two-term local quadrat variance (TTLQV) method was adopted. Distance approach, which was used to examine the spatial patterns at an individual tree level, included nearest neighbor method, distance to second-nth nearest neighbors, a goodness-of-fit method, a nonparametric trend analysis method, and logistic regression.
The results showed that as a whole Taiwan sassafras in that stand had an aggregated pattern. However, different size classes had different patterns, with smaller- and medium-sized trees showing aggregated patterns, but large trees were randomly distributed throughout the stand. Trend analysis suggested that no particular relationship between the size of a Taiwan sassafras tree and its neighbors. Results from logistic regression further suggested that, based on the collected data, we were unable to predict the probability whether the nearest neighbor with a given size would be present at a particular distance or direction. However, the results from a main effect model did show that there was no association among distance, direction and size.
表次 v
圖次 vii
壹、前言 1
貳、前人研究 3
參、理論基礎 11
3.1樣區法 11
3.1.1連續樣區法 12
3.2距離法 15
3.2.1最近鄰樹法 15
3.2.2順序法 17
3.2.3適合度檢定 19
3.3個體之空間分佈 20
3.3.1趨勢分析 20
3.3.2 Logistic迴歸分析 22
3.3.3主效應模式分析 23
肆、個案研究 24
4.1野外調查 25
4.2資料分析 26
伍、結果 27
5.1樣區法 37
5.1.1連續樣區法 37
5.2距離法 40
5.2.1最近鄰樹法 40
5.2.2順序法 42
5.2.3適合度檢定 46
5.3個體之空間分佈 49
5.3.1趨勢分析 49
5.3.2 Logistic迴歸分析 56
5.3.3主效應模式分析 58
陸、討論 59
柒、結論 65
捌、參考文獻 67
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