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題 名 | 二維水理模式與ArcGIS空間內插法評估生態基流量--以鱉溪為例=Evaluation of Ecological Base Flow Using a 2D Hydraulic Model and ArcGIS Spatial Interpolation Tools: A Case Study of Bie River |
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作 者 | 陳淑媛; 陳兆鈿; 胡通哲; 蘇上瑄; | 書刊名 | 中華水土保持學報 |
卷 期 | 51:2 2020.06[民109.06] |
頁 次 | 頁43-54 |
分類號 | 443.64 |
關鍵詞 | 適合度指標值; 空間內插分析; 生態基流量; 高身白甲魚; Suitability index value; Spatial interpolation analysis; Ecological base flow; Onychostoma alticorpus; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以鱉溪五號橋與六號橋上游河段,進行低流量的二維水理模擬(CCHE-2D模式),選擇目標魚種為高身白甲魚,進行每格點的適合度指標值計算,再以ArcGIS空間資訊軟體進行模擬範圍的空間內插分析,空間內插分析採三種方法,分別為自然相鄰法、克利金法、距離反比加權法,以3種內插法、計算五號橋與六號橋2處、低流量7種的權重可用棲地面積與可用棲地面積百分比,藉以決定生態基流量,根據結果,以PUA方式推算鱉溪生態基流量較合理,鱉溪模擬河段生態基流量為0.5 cms。 |
英文摘要 | In this study, the CCHE-2D model was adopted to simulate a river segment of the upper Bie River below bridges No. 5 and No. 6. The target species for the simulation was Onychostoma alticorpus because this fish population is small and it is an endangered species. Before the suitability index were calculated for each element and importing the data into ArcGIS, three tools for spatial interpolation-Natural Neighbor, Kriging, and Inverse Distance Weighting-were adopted from ArcGIS to calculate the weighted usable area and the percent of usable area under low flow discharge. Then, the ecological base flow was assessed from the results of weighted usable area and percent of usable area. According to the results, the percent of usable area is more suitable for calculating the ecological base flow. The ecological base flow of Bie River was determined to be 0.5 cms. |
本系統中英文摘要資訊取自各篇刊載內容。