植栽渠道阻滯係數之研究

植栽渠道或植生渠道係指邊坡與底床有植物的渠道。自然情況下的植栽渠道，通常係指在河岸、高灘地及主河道生長不同的陸生及水生植物的溪流等情形，而人工情形下的植栽渠道，則係指人工於全斷面或邊坡種植相關植物。植栽渠道因具有降低水溫、增加水生生物棲息地、污染控制等多種功能。因此，關於植栽渠道的各項設計應用方法日受重視。其中又以阻滯係數的選取，在渠道設計內爲最基礎的要素。目前植栽渠道設計大多使用n-VR curve做爲植栽渠道阻滯係數推估方法。但是大部分植栽渠道研究都聚焦於陸生植物對於植栽渠道阻滯係數之影響，而未討論植栽爲水主植物之情形。因此本研究首先藉由相關文獻探討分析植栽渠道阻滯係數的相關影響參數，並利用循環水槽及天然水生植物模擬植栽渠道，探討相關影響參數對阻滯係數之影響，並建立推求植栽渠道阻滯係數之方法。

關鍵字

阻滯係數；水生植物

並列摘要

The plants covered channel bottom or slope was called grass swale or vegetated channel. In the wild, the vegetated channel was growing terrestrial plants in the river bank or river high land and aquatic plants in the channel. In the artificial conditions, the vegetated channel was rearing choice plants at cross-section or in the river bank. Vegetated channel had multiple functions like reduce water temperature, increase habitat of aquatic organism and pollution control. Therefore, the researchers are pay attention to the application and design method of vegetated channel. The basically fundamental element is choice the retardance coefficient. Most designer of vegetated channel was use n-VR curve as retardance coefficient choice method. But, most research of n-VR curve for the vegetated channel was consideration about terrestrial plants. It was not concerned with aquatic plants. Thus, the researcher was referring to the former research of relationship of retardance coefficient and other influence parameters. Use the flume and natural aquatic plants estimated the retardance coefficient of vegetated channel. In the end, it provided the retardance coefficient estimation method of Egeria dense Planch and Oenanthe javanica channel bed.

並列關鍵字

Retardance coefficient ； Aquatic plan

國際替代計量

植栽渠道阻滯係數之研究

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