臺灣花蓮地區海岸植群生態之研究

Study on the Vegetation Ecology in Hualien Coastal Area of Taiwan

游國垣(Kuo-Yuan Yu)

指導教授 ： 葉慶龍

國立屏東科技大學/農學院/森林系所/碩士(2008年)

https://doi.org/10.6346/NPUST.2008.00278

摘要

本研究旨在調查臺灣東部海岸山脈花蓮地區植相組成、稀有植物、植群型、植群型與環境因子之關係。研究範圍從海岸山脈東側花蓮溪口以南至秀姑巒溪南岸靜浦村，臺11線公路以東至海岸滿潮線的海岸植群。共設置40個樣區，觀測19項環境因子，進行典型對應分析與雙向指標種分析解釋植群與環境間的關係。調查結果顯示研究區內共有113科423種維管束植物，其中蕨類植物有19科39種，雙子葉植物有78科309種，單子葉植物有16科75種。經與文獻比對結果稀有植物共有12種，其中蘄艾為瀕危種。植群分布依序是受海拔高度、地形、離海距、坡度、含石率、土壤有機質等主要環境因子影響。按典型對應分析、雙向指標種分析計4種植群型：A.馬唐型；B.九芎型；C.桔梗蘭－林投型；D.馬鞍藤型(D-1.酢漿草型－林投亞型；D-2.馬鞍藤－濱豇豆亞型)。

關鍵字

海岸植群生態 ； 典型對應分析 ； 雙向指標種分析

並列摘要

Vegetation survey was carried out in Hualien Area of Eastern Taiwan. This research also investigated and assessed rare plants based on the surveyed data. The investigation of this study, collecting the materials of the sea-shore vegetation between south bank of Hualien River on the east side of coastal area and south bank of Siouguloun River in Jingpu Village, between in the east of No.11 provincial route and the high-water mark of sea-shore. 40 plots and 19 environmental factors have been investigated and assessed. Analyzed by canonical correspondence analysis (CCA), and plant classification by two-way indicator species analysis (TWINSPAN) of the multivariate analysis method. The aim of this study is to find the significant factors to explain the relationships between species composition and environmental variables. The result based on the surveyed data, there are 113 families and 423 species of vascular plants, including 19 families and 39 species of Pteridophyte, 78 families and 309 species of Dicotyledon, and 16 families and 75 species of Monocotyledon. There are 12 plant species have been recognized as threatened taxa, Crossostephium chinense (L.) Makino are endangered species.
The major environmental factors affecting the distribution of plant vegetation in decreasing importance are altitudes, topographies, seashores, slopes, stone contents and organic matters. Classification based on the two-way indicator species analysis (TWINSPAN) resulted in 4 vegetaion types, including: (A) Digitaria sanguinalis type, (B) Lagerstroemia subcostata type, (C) Dianella ensifolia－Pandanus odoratissimus type, (D) Ipomoea pes-caprae type, (D-1) Oxalis corniculata - Pandanus odoratissimus subtype, (D-2) Ipomoea pes-caprae - Vigna marina subtype.

並列關鍵字

Seashore vegetation ； Canonical correspondence analysis ； Two-way indicator species analysis

參考文獻

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