本研究主要在調查花蓮溪流域鳥類資源,研究期間自1999年3月至2000年2月,爲期一年。調查地區包括:花蓮溪口、195縣道、花蓮農場、壽豐養殖區、兆豐農場及鯉魚潭。調查方法採穿越線法及點估法,每個月調查1至2次。主要結果如下: 1.全區鳥類共有42科157種,其中留鳥有70種,佔全部鳥種45%,候鳥及過境鳥有87種,佔全部鳥種55%。留鳥中,特有種3種(2%),特有亞種33種(21%),其他留鳥34種(22%)。候鳥中,冬候島50種(32%),夏候島8種(5%),過境鳥及迷鳥29種(18%)。 2.全區鳥種中,保育等級屬於珍貴稀有者有12種,屬於其他應予保育者有9種。 3.各調查區記錄的鳥類科數及種數為:花蓮溪口32科99種,195縣道32科96種,花蓮農場15科31種,壽豐養殖區26科54種,兆豐農場25科54種,鯉魚潭25科70種。 4.全區總種數季節性變化:在全年12個月中,以5、6、7三個月出現的種數較低,而3、4月則是高峰期,其餘各個月則較均匀,差異不大。 5.各區合計數量之季節性變化:以6、7、8三個月出現之數量最少,9月其次,其他各月則差異較小,而以3月份的數量最多。
One year's survey of ornithological resources along the region of Hualien river was conducted from March 1999 to February 2000. The investigation covered six areas: (1)estuary of Hualien river (2)county road 195 (3)Hualien farm (4)Shoufeng breeding pond area (5)Chaufeng farm (6)Liyu lake. Line transect and point count methods were used to proceed the investigation, once or twice monthly. The main findings are: 1. Totally,157 species included in 42 families are recorded in the whole areas. Among them, 70species are resident(45% of total), 87 species are migrant (55% of total). Among resident, 3species are endemic and 33 species are endemic subspecies. As for the migrant,50 species are winter visitors, 8 species are summer visitors, and 29 species are birds of transit. 2. In regard to bird conservation categories,12 species are rare valuable and 9 species belong to other wild life required conservation measures. 3. The number of species recorded in the whole areas is low in May, June and July .However, it reaches the highest point in March and April. Other months are quite even. 4. The number of birds recorded in the whole areas is lowest in June, July and August. Next lowest month is in September. It reaches the highest point in March. There is no big variation in other months.
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