都市公園綠地連接度與鳥類群聚關係之研究

The Relationship of Urban Park Connectivity and Avian Assemblages

本研究之目的在探討都市公園綠地連接度與鳥類群聚的關係，研究地點選定台北市中正及萬華兩個行政區。文中所稱的連接度分析是測量各研究分區中都市公園、綠地及行道樹間的連接程度，並運用α、β及γ三項連接度指標來計算其網絡效益。本研究以鳥類為指標物種，並以台北市野鳥學會的鳥類調查資料為基礎，以鳥類種數、隻數、豐富度、多樣性、均勻度及優勢度等六項指標來進行鳥類群聚的分析。經由皮爾森積差相關分析法來檢定都市公園綠地連接度與鳥類群聚間的相關性，並歸納研究結果如下︰一、公園綠地連接度會影響鳥類之群聚作用；二、提升公園綠地連接度可增加候鳥種數、豐富度及均勻度。因此，建議必須建立並維持都市公園綠地間的連結，以促進生態功能的發揮。 This study is devoted to investigate the relationship between urban park connectivity and avianassemblages. The study areas were Wan-hua and Zhong-zheng in Taipei. The connectivity analysispresented here examined the connections among urban parks, green spaces, and boulevards. Theconnectivity was evaluated by α, β, and γ indices; these are statistical measures that are useful incalculating network efficiency. Birds were selected to be an indicator species. Information related to birdswere derived from the database of Wild Bird Society of Taipei. Many indices describing avian assemblagesare analyzed, included the number of species, the quantity of birds, richness index, Shannon diversityindex, evenness index, and dominance index. Pearson correlation analysis was used to examine therelationship between urban park connectivity and avian assemblages. Study results can be summarized intwo parts: 1. Avian assemblages were correlated with the connectivity of urban parks. 2. The connectivityhad significant correlations for increasing visitors’ species, richness index and evenness index. The studysuggested that establishing or maintaining linkage between urban parks is essential to facilitate ecologicalfunctions.