Vegetation Ecology at Dakeng Area, Taichung

• Main Authors: Chun-Min Wang, 王俊閔
• Other Authors: Hsy-Yu Tzeng
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/12058276285535755186

碩士 === 國立中興大學 === 森林學系所 === 97 === The study site is in Dakeng where located between Beitun Dist., Taichung City and Sinshe Township, Taichung County with area about 4,020ha at 137-859m elevation. It is mainly low-altitude hills with tropical humid climate. This study was aimed to investigate the flora, vegetation composition and environmental factors. In this study site, 97 plots (25 m×10 m) had been set up, and 501 vascular plant species among 125 families, 332 genera were recorded. Based on Matrix Cluster Analysis (MCA), the plant communities were classified into 10 vegetation types and with the name of their dominant species respectively: I. Pasania glabra – Blastus cochinchinensis type; II. Phyllostachys makinoi – Dendrocalamus latiflorus type; III. Pasania konishii – Diospyros morrisiana type; IV. Zelkova serrata – Murraya paniculata type; V. Liquidambar formosana – Ilex asprell type; VI. Swietenia macrophylla – Citrus ponki type; VII. Trema orientalis – Oreocnide pedunculata type; VIII. Macaranga tanarius – Broussonetia papyrifera type; IX. Acacia confusa – Euphoria longana type and Ⅹ Miscanthus floridulus type. There are similar results between MCA and DCA (detrended correspondence analysis). In this study site, the most wide distribution is III. Pasania konishii – Diospyros morrisiana type. In this thesis, we also analyzed the population structures to understand succession status of the vegetation.We applied CCA (canonical correspondence analysis) to discuss the relationships between vegetation ordination, environmental factors and index of plant diversity; the soil pH value and whole light sky was positive correlation; the altitude and topographic position was negative correlation. In plant diversity, the upper layer’s Shannon’s index of diversity was negative correlation; the total’s species richness and ground layer’s species richiness was position.