李建堂2006-07-252018-06-282006-07-252018-06-282000http://ntur.lib.ntu.edu.tw//handle/246246/11374本研究利用1978-1998 年的航空照片判 釋與系統調查法，探討關渡溼地近二十年 的植物社會變遷情形。全區共設置16 條南 北向樣線，記錄每一樣線的植物組成及相 對覆蓋度，並沿樣線每隔10 m 量測高程， 與1986 年的調查結果比較，以推估關渡溼 地的平均堆積速率。 研究結果顯示，在1978 年以茳茳鹹草 和蘆葦為優勢的草澤，已轉變成目前以水 筆仔和蘆葦為優勢的林澤。水筆仔分布面 積由1978 年的0.08 ha，增加至1998 年的 24.14 ha，佔1998 年植群總面積的69.94 ％。 水筆仔和蘆葦的海拔分布幅度分別在 0.2~l.3 m 和0.3~1.6 m之間，而裸地高程則 在1.2 m 以下。蘆葦生育地的海拔高程分 布高於水筆仔，且兩者之間呈顯著的差異 (a=0.05)。在1986-1998 年間，關渡溼地平 均每年淤積增高達2.0 cm。A series of aerial photos from 1978 to 1998 and a systematic survey are used to analyze vegetation changes in the Kuantu wetland in the latest 20 years. Total 16 transects are carried out in the study area to investigate the vegetation structure and relative coverages. Meanwhile, field elevation surveys are conducted along with each transect with 10 m interval to compare with the findings in 1986 in order to estimate accretion rate in the Kuantu wetland. The results reveal that marsh habitat in 1978, dominated by Cyperus and Phragmites, has changed into a swamp habitat dominated by Kandelia and Phragmites in 1998. The total area of Kandelia in the Kuantu wetland from 0.08 ha in 1978 has increased to 24.14 ha in 1998, which is approximately 69.94% to total vegetation area . The elevation range for Kandelia and Phragmites is 0.2~l.3 m and 0.3~1.6 m, respectively. Elevation of bareland is below 1.2 m. The elevation range of the Kandelia is significantly different from that of the Phragmites (a=0.05). On average, the accretion rate in the Kuantu wetland during 1986-1998 is about 2.0 cm/year.application/pdf54548 bytesapplication/pdfzh-TW國立臺灣大學地理環境資源學系暨研究所關渡溼地水筆仔堆積速率Kuantu wetlandKandeliaaccretion rate[SDGs]SDG15reporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/11374/1/892313B002131.pdf