碩士 / 國立臺灣大學 / 森林學研究所 / 87 / Tulansan is located at Taitung county of east Taiwan. With mountain top rising to 1190 meters, it is the highest peak of the south section of Coastal Range. It experiences the summer-rain type climate condition which belongs to the south section of east climate region.
This study was based on 75 plots between elevation of 80-1190 meters. We surveyed 14 environmental factors and plant composition on every plot. The detrended correspondence analysis （DCA）, cluster analysis and tabular comparison were used in data analysis . The forest vegetation are divided into 8 types as in the following：
A. Lower Quercus zone
1.Cyclobalanopsis longinux - Ternstroemia gymnanthera Type
B. Machilus - Castanopsis Zone
2. Engelhardtia roxburghiana - Sloanea formosana Type
3. Machilus japonica var. kusanoi - Ficus fistulosa Type
4. Litsea coreana - Cyclobalanopsis glauca Type
5.Firmiana simplex - Cyclobalanopsis glauca Type
C. Ficus - Machilus Zone
6.Ficus benjamina - Ficus irisana Type
D. Tropical secondary forest
7.Leucaena leucocephala - Champereia manillana Type
8.Leucaena leucocephala - Trema orientalis Type
In this study, altitudes and air moisture（cloud）are the main factors which influence the differentiation of vegetation types. Besides, slope is also an important factor.
There are 778 species（belonging to 144 families ）of recorded vascular plants including 38 rare species. In the 217 recorded woody plants, Euphorbiaceae are the largest families（18 species）, the other major families are Moraceae（17 species）, Lauraceae（16 species）, Rutaceae（13 species）, Fabaceae（12 species）and Rubiaceae（9 species）. The tropical and subtropical broad-leafed forests are the main vegetation physiognomy.
The vegetation zones are found descending in elevation as compared to the middle part of Central Range, especially for Quercus zone. The relation between altitude and vegetative types in Tulansan is different from that in central Taiwan.
The original vegetation in lower elevation have been largely destroyed due to land reclamation for agriculture and livestock raising purposes. Forest fragmentation influenced the distribution of plants. The remnant vegetation still face the stress of further development. We suggest that the original vegetation must be protected properly in this area.
| Identifer | oai:union.ndltd.org:TW/087NTU00360041 |
| Date | January 1999 |
| Creators | Chih-Sheng Wu, 吳志昇 |
| Contributors | Dr.Horng-Jye Su, 蘇鴻傑 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 88 |
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