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  2. 農業暨自然資源學院
  3. 森林學系
Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/65890
標題: 臺灣地區歸化植物侵略性評估系統之建立
Invasiveness Assessment System of Naturalized Plants for Taiwan
作者: 張芷熒
Chang, Chih-Ying
關鍵字: naturalized plants;歸化植物;invasive species;analytic hierarchy process;invasiveness assessment system.;侵略種;分析階層評估法;侵略性評估系統
出版社: 森林學系所
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Available from http://www.hear.org/Pier/wra.htm (accessed May 2007).
摘要: 
本研究之目的在建立一量化且適用於臺灣地區歸化植物侵略性的評估系統。研究內容主要分為三部分：1. 藉由參考相關文獻，擬定出可能造成歸化植物侵略的因子，成為臺灣地區歸化植物侵略性的評估指標；2. 利用分析階層程序法(AHP, analytic hierarchy process)架構各評估指標間的階層關係，得到各指標的權重，建構臺灣地區歸化植物侵略性評估表；3. 選取臺灣地區的歸化植物，套入評估表，以檢驗本評估系統是否能反應出臺灣地區歸化植物侵略性的差異。利用AHP法得到之臺灣地區歸化植物侵略性評估系統中，大指標中之生物學特性(63%)較環境適合度(37%)重要；中指標以繁殖能力(24%)最為重要；小指標則以原產地所佔的權重(15%)最重。經測試結果顯示，發現目前已造成侵略的歸化植物29種與33種侵略狀態不明確的物種，兩者在侵略現況評估及先天侵略潛能評估的得分皆有顯著差異，本系統能夠以定量的方法，界定歸化植物在臺灣地區侵略性的差異，並顯示出歸化植物目前及未來對臺灣生態體系威脅性。對於近10年所發表的新歸化植物，其中牙買加長穗木(Stachytarpheta jamaicensis (L.) Vahl)先天侵略潛能得分偏高，推測此物種在未來有可能成為侵略植物。

The aim of this study was developing a quantitative assessment system of invasiveness assessment of naturalized plants for Taiwan. The processes were separated into three parts: (1) revision of pertinent literature to identify traits for invasiveness assessment indexes; (2) using AHP(analytic hierarchy process) to construct the hierarchy of invasiveness assessment system of naturalized plants for Taiwan; (3) examination whether this system responded the difference of invasiveness among naturalized plants in Taiwan. In this hierarchal invasiveness assessment system, from the result by AHP, the “biological attribute (63%)” was more important than “environmental fitness (37%)” among arch-indexes; “reproduction ability (24%)” had the most weight among sub-indexes, and “country of origin (15%)” had the most weigh among small indexes. On examining this system with 29 invaded species in Taiwan and other ambiguously invasive species, score of invasion likelihood both state of play and connatural potency were significantly higher than those of the latter, implied this system would provide a good predictor for assessing the threats of naturalized plants and their invasive ability. Furthermore, a newly naturalized plants, light-blue snakeweed (Stachytarpheta jamaicensis (L.) Vahl) with high score of connatural potency indicated that it may be the invasive plant in the future.The result of this study exhibited this assessment system for invasiveness would be a useful qualifier for placing minacity of naturalized plants to Taiwan ecosystem.
URI: http://hdl.handle.net/11455/65890
Appears in Collections:森林學系

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