There is a great deal of vegetation literatures about vegetation of forest and alpine grass in Taiwan, but the weed vegetation survey often investigates the species only. As the study of vegetation in Taiwan is for away from completeness, and weed is important to biodiversity is imperative, therefore the study of weed vegetation. The study selected weed vegetation in Daliau Township as study area, and surveyed floristic composition and environmental factors. The study used Branu-Blanquet method, and set up 304 plots. Classification of the vegetation types was conducted by cluster analysis and tabular comparison method, and following the treatment of Taiwan vegetation classification system. Detrended correspondence analysis (DCA) and nonmetric multidimentional analysis (NMDS) used to clarify the relationship between vegetation composition and environmental factors. The lower two levels of the hierarchy, alliance and association, were based on floristic composition according to the floristic-sociological concept of diagnostic species. The relationships of floristic composition and environmental factors were not significant, and this might be caused by that the composition of weed communities can quickly responsed to weather and human disturbances. The resultant system consisted of 2 classes, 3 formations, 21 alliances, 37 associations, 6 tentative vegetation types and 10 intermediate vegetation types. It may supply some misgiving of study of vegetation in Taiwan.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0210110-125737 |
| Date | 10 February 2010 |
| Creators | Lin, Jian-sheng |
| Contributors | Tsung-Hsin Hsieh, Ho-Yih Liu, Ching-Long Yeh |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0210110-125737 |
| Rights | restricted, Copyright information available at source archive |
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