摘要
本研究目的為建立玉里野生動物保護區植物資源清單及植群資料，並瞭解影響植物社會分化之環境因子。植相調查共記錄維管束植物114科296屬604種，其中，稀有植物者計59種。共分析了木本植物社會98個(250 m2)樣區、灌叢植物社會20個(100 m2)樣區及草本植物社會12個(4 m2)樣區及評估6項環境變數。透過雙向指標種分析配合降趨對應分析將木本植物社會劃分為8個植群型及7個亞型，分別為臺灣赤楊型、蘭邯千金榆林型、紅檜型(假長葉楠-紅檜亞型、紅檜-昆欄樹亞型、森氏櫟-高山新木薑子亞型)、臺灣鐵杉型(臺灣鐵杉-紅檜亞型、厚葉柃木-臺灣鐵杉亞型)、臺灣二葉松型(臺灣二葉松亞型、臺灣二葉松-紅毛杜鵑型)、褐毛柳型、刺柏-玉山圓柏型及臺灣冷杉型；灌叢植物社會劃分為臺灣二葉松-臺灣馬醉木型、刺柏型及臺灣小檗型等3型；草本植物社會則劃分為劉氏薹型、玉山箭竹型及短莖宿柱薹-高山芒型等3型。利用典型對應分析得出，影響木本植物組成的環境變數以海拔高度、坡度及坡向為主；灌叢植物為海拔、地形位置、坡度及全天光空域；草本植物社會則為海拔及全天光空域。木本植物社會徑級結構大部分呈現反J型分布，顯示更新情況良好且穩定，僅鐵杉-雲杉林帶之主要優勢種多呈現S型分布，推測此區域之族群曾受到局部之干擾；灌叢植物社會則皆呈現L型分布。
並列摘要
The objectives of this study were to set up a list of the plant resourceand the vegetation data in Yu-LiWildlife Reserveand to realize the environmental factors affecting vegetation differentiation. Theinventory of vascular plant found 604 species, 296genera, and 114 families, , among which 59 species were rare.There were 98 woody vegetation plots in 250 m2,20 shrub plots in 100 m2and 12 herbaceous plots in 4 m2,and 6 terms of environmental variables evaluated.The woody vegetation community was classified into 8 types and 7 subtypes by the two way indicator species analysis(TWINSPAN) and the detrended correspondence analysis(DCA), which were Alnus formosanaType, Carpinus rankanensisType, Chamaecyparis formosensisType(Machilus japonica-ChamaecyparisformosensisSubtype, Chamaecyparisformosensis-Trochodendron aralioidesSubtype, Cyclobalanopsis morii-Neolitsea acuminatissimaSubtype), Tsuga chinensis type(Tsuga chinensis-Chamaecyparis formosensis subtype, Eurya glaberrima-Tsuga chinensis subtype), Pinus taiwanensisType(Pinus taiwanensis-Rhododendron rubropilosumSubtype, Pinus taiwanensisSubtype), Salix fulvopubescens Type, Juniperus formosana-Juniperus morrisonicolaType, Abies kawakamiiType. Simultaneously, the shrub vegetation community was classified into Pinus taiwanensis-Pieris taiwanensiType, Juniperus formosanaType, Berberis kawakamiiType in total 3 types, andthe herbaceous vegetation community was classified into Carex liuiiType, Yushania niitakayamensisType, Carex breviculmis - Miscanthus sinensisType in total 3 types.Through the canonical correspondence analysis(CCA), it was realized that altitude, slope, and aspectwere related significantly to the composition of woody vegetation community. However, altitude, whole light sky space, topography, and slope were related significantly to the composition of shrub vegetation community, and altitude and whole light sky space were related significantly to the composition of herbaceous vegetation community.Most of the woody vegetation community showeda reverse-J-shaped curve in diameter structure, exerting a better effect on refreshing seedlings, but the dominant species of theTsuga- Picea zone showed a rotated-sigmoid-shaped curve. It was speculated that the ethnic groups in this region had been partially disturbed.The shrub vegetation communitywas in L-shaped distribution.