| Summary: | 碩士 === 國立屏東科技大學 === 森林系 === 92 === This study focused to investigate the vegetation diversity of Lilung Mountain. The main objectives of the present study were to understand the patterns of vegetation diversity on this area. 60 plots of 0.05 ha were analysised. There were 559 vascular plants were found. The results were also indicated that 6 subtypes under 4 main vegetation types with the detrended correspondence analysis (DCA) and two-way indicator species analysis (TWINSPAN) in this area. The first main vegetation was included Cyclobalanopsis championii - Machilus thunbergii type which could be subdivided into Freycinetia formosana - Machilus thunbergii subtype and Astronia formosana - Litsea acutivena subtype. The second type of vegetation was Dysoxylum hongkongense - Schefflera octophylla type which could be subcategorized into Adinandra formosana - Schefflera octophylla subtype and Reevesia formosana - Ardisia sieboldii subtype. The third type of vegetation was the Dendrocnide meyeniana - Machilus japonica var. kusanoi type which could be subdivided into Oreocnide pedunculata - Machilus japonica var. kusanoi subtype and Lagerstroemia subcostata - Cryptocarya concinna subtype as well as Maytenus diversifolia - Severinia buxifolia type.
α diversity along altitudinal was a hump mode of the Lilung Mountain. In the vegetation structure, the Reevesia formosana - Ardisia sieboldii subtype was presented in the biggest type. However, Cyclobalanopsis championii - Machilus thunbergii type occurred the highest density between the main and sub-main crest lines. The specie diversity and productivity were related to the hump of Lilung Mountain. The different altitude influenced the β diversity. While the zone turnover rates were investigated between 450~670 m and 848~980 m respectively, the results indicated the higher species turnover rates due to the environment change abruptly. 95 ﹪species turnover rate as 522 m were quite high and species turnover rate of altitudinal difference in 400 m as 81.7 ﹪on the Lilung Mountain, and the herb layer had the same trend with wood layer. This attributed to the habitat variable of this area. Vegetation diversity was affected with monsoon that changed the species diversity and structure of the wood plant, whereas it could not change the vine plant, epiphytic plant and herb plant on Lilung Mountain of eastern and western.
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