李建堂2006-07-252018-06-282006-07-252018-06-281999http://ntur.lib.ntu.edu.tw//handle/246246/11356本研究從地形觀點利用航空照片判釋 及野外調查，探討淡水河口水筆仔紅樹林 近二十年的變遷情形。研究結果顯示，水 筆仔在1978 年、1986 年、1994 年、1998 年的分布面積分別為47.62、47.15、81.43 和103.80 公頃。水筆仔分布面積在1978- 1986 年間並無多大的變化，主要因人為干 擾造成地形變化所導致的結果。但自1986 年後，人為干擾程度逐漸減少，河岸的堆 積地逐漸增多，有利於水筆仔的成長與散 布，因此其分布面積開始呈現大幅度的成 長，在1986-1994 年間及1994-1998 年間平 均每年的增加速率分別達到4.28 公頃和 5.59 公頃。研究結果同時顯示水筆仔有逐 漸往河流上游地區擴散之趨勢，在塭子川 往成子寮附近擴散，但尚未進入五股沼澤 區;在基隆河道上，水筆仔的分布目前僅 至外雙溪口處之對岸灘地;而在淡水河主 河道上的分布最遠已擴散至中興橋下。This study from the geomorphologic perspective use aerial photo interpretation and field survey to investigate the change of Kandelia candel (L.) Druce distribution in Tanshui estuary in the latest 20 years. Results indicate that the total area of Kandelia in Tanshui estuary for years 1978, 1986, 1994 and 1998 is 47.62, 47.15, 81.43 and 103.80 ha, respectively. During the period of 1978-1986，the total area of Kandelia is almost no change due to the disturbance of channel landforms caused by human activities, which is not suitable for mangrove survival and expansion. After 1986, the total area is increased fast because several habitats along the riverbanks are created by sediment accumulation. Those habitats provide suitable environments for Kandelia growth and dispersal. On average, the increase rate of Kandelia distribution area for the periods of 1986-1994 and 1994-1998 is 4.28 ha/year and 5.59 ha/year, respectively. Meanwhile, there is a trend that Kandelia is expanding its distribution to the upstream areas continuously.application/pdf32147 bytesapplication/pdfzh-TW淡水河口紅樹林水筆仔生育地地形觀點Tanshui estuarymangroveKandelia candel (L.) Drucehabitatgeomorphologic perspectivereporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/11356/1/882621B002031.pdf