碩士 / 國立臺灣大學 / 植物學研究所 / 89 / Taipei District is located at the northern end of Taiwan Island. There is much variation in geological element, topographic construction, and climate within this area. In the past, botanists had made a lot of investigation on the floristic composition of forest around Taipei Basin; some of those were even concentrated on the influence of local geology and climate. However, these studies were mostly focused on a specific small-scale area. Therefore, the author attempts to sample all the parts of low-altitude forest around suburbs in Taipei in a more extensive sense, and then elucidates the variation.
52 plots are set at foothills around Taipei. The position of sample plots is arranged as an arc from northwest to southeast and below 700 m high in altitude. After the calculation on multivariate analysis, the floristic composition of forest can be divided into 5 dominance types, and the ground layer vegetation into 4 dominance types. Each of these types contains local deviation to a certain extent within itself. Comparison with the environment factors reveals that the ruling factor of vegetation variation should be multi-directional. In addition, the more extensive scale and environmental heterogeneity of study area make it even more difficult to clearly interpret vegetation variation with single value or linear combination of environmental quantitative characters.
Besides, the natural low-altitude forest of Taipei is preliminarily coordinated into 6 association units in accordance with the classification result and previous studies. And the differentiation of those classification units is assumed to be related with high-level environmental elements such as vegetation zonation, geographical climate regions（the declining influence of northeast monsoon）, geological background, and general effect of local topography. The distribution of species also reflects that certain species have indicative potential for specific conditions within the study area.
| Identifer | oai:union.ndltd.org:TW/089NTU00366001 |
| Date | January 2001 |
| Creators | Sheng-Hsin Su, 蘇聲欣 |
| Contributors | Chen-Meng Kuo, 郭城孟 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 124 |
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