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題 名 | 紅樹林生長對基隆河河口洪水位之影響=The Influence of Mangrove Growth on Flood Stage of Keelung River |
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作 者 | 許銘熙; 吳啟瑞; 傅金城; | 書刊名 | 農業工程學報 |
卷 期 | 45:2 1999.06[民88.06] |
頁 次 | 頁1-10 |
分類號 | 371.5 |
關鍵詞 | 紅樹林; 洪水位; 基隆河; 關渡濕地; Mangrove; Flood stage; Keelung river; Kuan-Du wetland; |
語 文 | 中文(Chinese) |
中文摘要 | 關渡濕地位於臺北盆地北側,為淡水河與基隆河之匯流處。因受到淡鹹水交會、 河口潮汐及地形較低之影響,形成紅樹林生長之優勢環境。近年來其分佈面積已廣達 20 餘 公頃,且有繼續擴大生長空間之趨勢。本文分別依民國 67 年、民國 75 年及民國 83 年之 航照圖估算紅樹林的生長面積,並以其生長擴張速率預估民國 95 年之生長面積,最後再配 合二維水理數值模式分析關渡濕地紅樹林對於基隆河河口洪水位之影響。經由模擬結果顯示 , 因受到紅樹林逐年的擴張生長, 將會造成河川流速加大及洪水位提升。 |
英文摘要 | The Kuan-Du wetland located at the confluence of the main Tanshui River and Keelung river in the northern Taipei. Due to the effects of tide, alluvial lowland and the saltwater-freshwater interaction, the protection zone adapts to growth circumstances for mangrove. The mangrove grows well and enlarges the full extend of the sand bar in the mouth of Keelung river. The area of mangrove extended is about 20 ha now. The area of mangrove in 1978, 1986 and 1994 was respectively estimated by using the airscapes. The 2006 mangrove area was predicted from the trend of growth. Then a two-dimensional numerical model was employed to simulate the flood flow. The simulation results show that the mangrove growth will increase the flow velocity and rise the water stage during the flood. |
本系統中英文摘要資訊取自各篇刊載內容。