宜蘭縣無尾港水鳥保護區之植群調查

Investigation on the Vegetation of Wuwei Harbor Waterbird Refuge

陳子英(Tze-Ying Chen) ； 俞秋豐(Chiou-Feng Yu) ； 李智群(Jyh-Ching Lee) ； 戚永年(Yeong-Nain Chi)

《宜蘭技術學報》 9期生物資源專輯 (2002/12) Pp. 175-189

https://doi.org/10.6179/nit.job.2002.09.29

摘要

無尾港位於宜蘭縣蘇澳北邊，1993年縣政府依野生動物保育法公告為宜蘭縣無尾港水鳥保護區，早期附近海邊有木麻黃造林及栽植水稻、荷花與茭白筍等農作物，目前已劃設為水鳥保護區。無尾港水鳥保護區之植群經野外調查，共記錄有蕨類14種，被子植物的雙子葉植物92種，單子葉植物41種，合計共147種，其中有稀有植物綬草與水蕨二種。經設置30個樣區調查，可將植物社會分成一、沙岸生育環境的（1）白茅－裂葉月見草群叢及木本的（2）林投－裂葉月見草群叢、（3）黃槿群叢及（4）木麻黃－苦楝群叢森林社會，這四個群叢是人工造林或次生林；二、耕地生育環境的（5）長梗滿天星－錢蒲群叢、（6）茭白筍群叢及（7）荷花群叢；長梗滿天星－錢蒲群叢是休耕或廢棄之農田，而茭白筍群叢及荷花群叢皆為農作所形成；三、濕地生育環境，可分成無尾港水體的（8）大萍－布袋蓮群叢、水體邊緣的（9）小豇豆－蘆葦群叢及（10）黃槿－蘆葦群叢共三種。本植群調查建議未來可依此資料做為植群製圖之基礎，此並可做為未來水體監測與防風林健康狀態調查上之參考。

關鍵字

無尾港水鳥保護區 ； 植群 ； 降區對應分析 ； 雙向指標種分析法

並列摘要

Wuwei harbor waterbird refuge locates north of Su-ao, Ilan county, northeastern Taiwan, before it was assigned to become a waterbird refuge in 1993, the area was covered with Casuarina equisetifolia plantation and Oryza sativa, Nelumbo nucifera, and Zizania latifolia crops. Vegetation information collected from the 30 sampling stands revealed 147 plant species which included 14 ferns, 92 dicotyledons and 41 monocotyledons. Among the 147 plant species, two rare species, Spiranthes sinensis (Pers.) Ames and Ceratopteris thalictroides (L.) Brongn were recorded. Multivariate analysis on the raw data were carried by DCA and TWINSPAN, which divided the vegetation into the following three habitats, 10 associations: 1.Sand habitat, rendered by plantation or secondary forest, which could be subdivided into 1. Imperata cylindrical var. major-Oenothera laciniata association distributed in sand beach, and 2. Casuarina equisetifolia-Melia azedarach association, 3. Hibiscus tiliaceus association, 4. Pandanus odoratissimus var. sinensis-Oenothera laciniata association were distributed in sand dune. 2.Waste farmland and farmland habitat which could be further divided into 5. Serissa japonica-Juncus leschenaultii association, 6. Zizania latifolia association and 7. Nelumbo nucifera association. 3.Wet land habitat, from which 8. Pistia stratiotes-Eichhornia crassipes association distributed in pond, 9. Vigna minima var. minima-Phragmites communis association and 10. Hibiscus tiliaceus-Phragmites communis association distributed in pond margin could be observed. The results of the vegetation investigation could be used as an important data basis for vegetation mapping, monitoring the dynamic vegetation changes, and health index of the Casuarina equisetifolia forest in the future.

並列關鍵字

Wuwei harbor waterbird refuge ； vegetation ； Detrended Correspondence Analysis (DCA) ； Two Way Indicator Species Anlysis (TWINSPAN)