鑑於近年來台灣本島重大天災頻仍,許多關於生態工程之研究乃積極展開,而研究重點多在河川護岸之型式、材質、工法,並以植栽之存活比率、綠覆速度做為適生植物種類之指標,對於曠日廢時的監測或實證研究較為少見,亦少有從植物之抗流能力(flow resistance)出發,針對植生對不同流速產生之抗流機制之探討,或者關於植生對不同流速之河床結構之適應性的實驗。本研究擬從模擬流場之水工模型出發,探究水生植物對於不同流速之水道,在抗流力方面會產生如何之變化,並就植被之生長速率、莖葉組織強度的變化、抗流之耐度極限、抗沖刷反應 Abstract Natural disasters in Taiwan occurred more and more frequently and severely in recent decades. Researches on ecological engineering have therefore become imperative. However, most of the researches are on the flood mitigation management and the ty