The Effects of Different Streamflows on Fish Weighted Usable Area-A Case Study of the Fungaue Creek

• Main Authors: Chih-Hung Weng, 翁智鴻
• Other Authors: Jen-Yang Lin
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/68208739136397206630

碩士 === 國立臺北科技大學 === 環境規劃與管理研究所 === 92 === 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 streamflows at Fungaue creek of Shuangsi river in Taipei. It can be simulated fish habitats weighted usable area by habitat suitability curve of fishes as indicator species in different stream condition, example pool、riffle、run et. al. defined by hydraulics parameter. The hydraulic parameters of water depth and velocity could be simulated by RMA2 model with the data, including boundary conditions is measured directly flow rate, water elevation, and the elevation of 35 river sections.It can determine "ecological basic flow＝1.72（m3/s）" by Instream Flow Incremental Methodology(IFIM) in Fungaue creek. The results show that percent weighted usable area of 2 fishes（Zacco platypus、Rhinogobius candidianus） in 5 stream conditions defined by Froude Number in Fungaue creek. It can apply the data to build hydraulic parameters of river restoration.