Study on Population Ecology of Euonymus pallidifolia Hayata in Hengchun Peninsula

• Main Authors: Huang-Chun Ming, 黃俊明
• Other Authors: Ching-Long Yeh
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/05203308466425827165

碩士 === 國立屏東科技大學 === 森林系所 === 96 === Euonymus pallidifolia Hayata also called Hengchun pallidifolia, is an endemic and critically endangered species with small populations growing on uplifted coral-reef of low elevation in southern Hengchun Peninsula. The purpose of the investigation was to provide basic reference data for the management and conservation of Euonymus pallidifolia in Hengchun Peninsula. Twenty-one sampling plots were established in the area, each plot was composed of four 5×5㎡ quadrats. The vascular plants inventory recorded a total of 63 families, 121 genera and 144 species. Seven species among 7 families were classified as rare plants. There are two vegetation types, Diospyros eriantha- Aglaia formosana type and Ficus superba var. japonica - Aglaia formosana type. The population structure of Euonymus pallidifolia was reverse J-shaped, representing well-regenerated. It indicates a stable population. It has higher mortality at DGH 2 class than others, which may result from competition. It approaches the physiological life around twenty-five years old. By local survey, we can observe the main habitats of the populations of Euonymus pallidifolia at Guanshanin and Dapingding. Both sampling plots were located on upslope and uplifted coral-reef, and have the biggest populations.