溪頭地區不同年間鳥類群聚變化

溪頭自然教育園區內的生物多樣性資源豐富，是國內最受歡迎的森林遊樂區之一。但近十年園區歷經地震、風災後，許多賞鳥人士反應溪頭的鳥種與數量有減少的趨勢，推測可能與地景變遷有關。本研究於2006與2010年在溪頭地區進行鳥類相調查，並與林曜松與周蓮香（1990）的調查資料相比較。整體而言，歷年調查結果的在鳥隻數中有顯著的差異（p＜ 0.001），且鳥種類數、鳥種歧異度與均勻度上都以1990年的調查結果為最高。1990年的鳥種組成也顯著與2006年不同（2006與1990年的Bray-Curtis相似度為0.68, p= 0.014；2006與2010年為0.69, p= 0.74）。鳥種組成上的主要差異為藪鳥（Liocichia steerii）在2006年後成為主要優勢種，此現象為遊客壓力造成的影響亦或是地景上的變遷所致，值得進一步的研究與長期的觀察以探究其可能原因。

關鍵字

鳥類群聚；森林遊樂區；地景變遷；遊客壓力

並列摘要

With the abundant biodiversity resources, Xitou Nature Education Area has been one of the most popular Forest Recreation Areas in Taiwan. Many bird watchers have pointed out that the avian populations of Xitou might be reduced due to landscape changes after 921 earthquake and typhoons over the past decade. We conducted bird surveys in 2006 and 2010, and compared the results with Lin and Chou (1990). Overall, our results showed that the species of birds, Shannon-Wiener index and Pielou's Evenness index were higher in 1990, and the numbers of birds were significantly different between years (p＜0.001). The avian community were also significant different between 1990 and 2006 (Bray-Curtis similarity 0.68 for 2006 and 1990, p= 0.014；0.69 for 2006 and 2010, p= 0.74).The major difference is Steere's Babblers (Liocichia steerii) had become a most dominant specie in 2006 and 2010. The reason of this increase whether is caused by recreation pressure or landscape changes will need further studies.

並列關鍵字

avian community ； landscape change ； recreation pressure ； Xitou Nature Education Area

國際替代計量

溪頭地區不同年間鳥類群聚變化

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