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河川復育計畫完工後之評估-以高雄愛河及台中高山溪為例

Post-Project Appraisals in River Restoration-Case Studies of Love River in Kaohsiung and Kao-Shan Creek in Taichung

摘要


台灣地區近年來河川復育課題雖然逐漸受到重視,但是缺乏河川復育的明確定義,也缺乏河川復育計畫完成後之成效評估及適應性管理。本研究首先對河川復育之定義進行彙整及歸納,然後訂出河川復育之明確定義,接著應用美國學者Downs及Kondolf在2002年所發展之河川復育評估方法(PPAs),以高雄市愛河之心復育計畫及台中市高山溪壩體移除改善計畫為研究對象,進行河川復育計畫資料完善性與成效評估之案例研究。研究結果顯示愛河之心復育計畫欠缺計畫施作前之河道基本資料調查,也缺乏計畫成功與否之明確標準,導致生態池未有妥善設計,使得水質改善功能之目標達成有限,而監測計畫之欠缺,亦難以提供改善方式之研擬。高山溪位於雪霸國家公園內,它的壩體拆除改善工程計畫受到比較多的重視,計畫前有相對完整之調查資料。計畫施作前、中、後的河道環境及魚類的完整調查資料,將有利於河川復育計畫成效評估及未來改善方案之擬訂。惟後續變化情形仍應長期加以觀測,在適應性管理的概念下,以準確掌握拆壩對於河道及櫻花鉤吻鮭棲地所產生之衝擊。

並列摘要


Restoration of rivers and streams has attracted increased interest in recent years. In Taiwan, there are no consistent definitions and lacks adaptive management of river restoration. Therefore, this study clarified the definition of river restoration first and then used an evaluation tool, Post-Project Appraisals (PPAs), to evaluate two restoration projects. One is the urban river restoration project of Love River in Kaohsiung, and the other is the dam removal project in Taichung. The results showed that integrated documents could help us to evaluate restoration project well i.e. the check dams removal of Kao-Shan Creek. In the restoration of Love River at the Heart of Love Rive, the lake of pre-project baseline survey caused the bad design of ecological ponds setting and the objective of water quality improve was failed. There have no integrated documents, it's difficult to draw some improve suggestion, nor adaptive management.

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