頁籤選單縮合
題 名 | 不同流況對魚類棲地面積之影響:以臺北縣枋腳溪為例=The Impacts of Fish Habitats Weighted Usable Area in Different Stream Conditions: A Case Study of the Fungaue River |
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作 者 | 林鎮洋; 陳彥璋; 翁智鴻; | 書刊名 | 朝陽設計學報 |
卷 期 | 6 民94.06 |
頁 次 | 頁1-16 |
分類號 | 443.64 |
關鍵詞 | 生態工法; 流況; 指標物種; 適合度曲線; 魚類棲地可用面積; Ecotechnology; Stream condition; Habitat suritability curve; Weighted usable area; |
語 文 | 中文(Chinese) |
中文摘要 | 有別於過去以人為出發點的防洪及取水考量,溪流生態環境的研究為近年來之趨勢。為了探討河川溪溝在不同流況之棲地面積變化,本研究利用RMA2二維水理數值模式,模擬臺北縣雙溪支流枋腳溪中段河道流況對魚類棲地可用面積所造成之影響。針對淵、瀨、潭等不同流況,以水理參數量化定義,並選定指標物種為魚類,將水理參數結合生態調查統計資料,配合魚類棲地適合度曲線,求出不同流況之魚類棲地可用面積,以瞭解物理棲地流況對生態系統之變異性。 本研究實際測量35個河道斷面及邊界條件之流量和水位,經由RMA2模式水理計算,求出水位及流速之水理參數。以福祿數之無因次參數判斷出五種流況,配合臺灣石魚賓棲地適合度曲線,計算結果發現深流之棲地面積百分比最大,為臺灣石魚賓最易發現之流況,以利建立河川復育參數資料庫。 |
英文摘要 | Comparing to the issue of the flood controlling and water using in the past, the research with ecological concerns during river restoring is a tendency. The research uses RMA2 of two dimensional hydraulic model can be determined the impact on weighted usable area of different stream conditions at Fungaue creek of Shuangsi river in Taipei. It can be simulated fish habitats weighted usable area in different stream condition, for example, pool, riffle and run, etc. Defined by hydraulics parameter, and make up fishes habitat suitability curve by fishes as indicator species. The hydraulic parameters of water depth and velocity could be simulated by RMA2 model with the data, including boundary conditions and the elevation of 35 river sections, that is measured directly flow rate and water elevation. The results show that it is determined 5 stream conditions by Froude Number and the fish habitats weighted usable area of run is the greatest, the pool is the lowest, and apply the data to build hydraulic parameters of river restoration. |
本系統中英文摘要資訊取自各篇刊載內容。