2014-11-292024-05-15https://scholars.lib.ntu.edu.tw/handle/123456789/661982摘要：淡水河系擁有臺灣北部重要的水筆仔純林，同時亦為鳥類及許多濕地動物的重要棲地，在全球候鳥遷移及紅樹林的分布上，皆具重要意義。為維護此區重要之濕地生態，行政院農業委員會於 1986 年依文化資產保存法(簡稱文資法)，將挖子尾、竹圍及關渡三處分別劃為自然保留區。有別於另兩處自然保留區，關渡自然保留區劃設之初，棲地環境以泥灘地為主，少有水筆仔分布，其劃設目的在於保護水鳥的棲息環境。然 1960 年代發生炸隘口與築關渡防潮堤的兩事件，徹底改變此區的水文型態，造就適合紅樹林生長的環境。紅樹林的快速增長與擴散對於周圍區域防洪安危將造成影響。原本以水鳥為主的鳥類相，自此逐漸轉變為棲息於紅樹林中的鷺科鳥類，其他陸鳥也較以往增加，顯示此區保護水鳥覓食、休息之功能逐步降低。若欲顧及防洪安全與維持水鳥棲息優勢，勢必進行棲地營造的動作。然因文資法嚴格的規定，需保持劃設時的自然狀態，許多經營管理對策與措施難以執行，無法達成保育、防洪目標，故有檢討之議，需再思考在現行文資法的限制下是否有其它可嘗試之方案，如自然保留區範圍調整，以使保育與防洪之目標可以同時兼具。<br> Abstract: Guandu Nature Reserve is located to the north-west of Taipei and south-west of Guan-du plain, at the convergence of Keelung River and Danshui River, and is a typical river-mouth wetland. With prominent tidal changes, there are tremendous changes of water level and saline content, which turned it into a unique local ecosystem, It is a suitable habitat for mangroves and so as visiting birds to feed on. In 1986, Guandu Nature Reserve was established according to Cultural Heritage Preservation Act by Council of Agriculture in order to protect habitat of waterbirds. However, bombing out Shihihutug mountain pass and building dikes in 1960s had changed hydrology type and then caused mangrove expanding dramatically. These posed a potential impact on flood-prevention and waterbird conservation. To maintain the both goals, flood-prevention and waterbird conservation, we have to do management to re-achieve functions of Guandu Nature Reserve. But, because of strict limitations by Cultural Heritage Preservation Act, we can neither change much of the habitat nor conduct any management plan. Therefore, we have to find a solution that can be conducted under the current law, such as changing the area size of Guandu Nature Reserve. However, studies are needed to assess the impact for doing so.水鳥文化資產保存法防洪紅樹林疏伐Cultural Heritage Preservation Actflood-preventionmangrovethinningwaterbirds