中文摘要
關山嶺山位於玉山國家公園的西南部，本計畫沿關山嶺山步道設置樣區，調查沿線植物種類和植群組成，並建立本區稀有植物名錄。目前共記錄植物242種，其中特有種比例高達51％。並發現一種新記錄植物林豬殃殃。關山嶺山海拔高度3,176m，現今山頂區域為冷杉林，表示關山嶺山不存在高山植物帶。但在部分崩塌地，發育出以草本植物為主的植物社會。在岩生植物樣區，主要優勢植物為山艾。在近山頂區域岩屑地土壤發育較佳處，是以灌木植物為主的高山岩屑地植物社會，主要優勢植物刺柏。大關山隧道上方的鞍部西側下方，有一片以玉山圓柏為主的森林，近乎純林，這可能是分佈最低的玉山圓柏純林。台灣冷杉林分布於3,000m以上至山頂，台灣冷杉為絕對優勢物種。台灣鐵杉林分布於2,500～3,000m之間，主要優勢植物是台灣鐵杉。關山嶺山東側常有崩塌地產生，從南橫公路至3,000m皆可見到松林，主要優勢種是台灣二葉松，其內常有多種樹木生長，常見者有褐毛柳、刺柏，灌木類植物有小葉胡頹子。
目前登錄之稀有植物種類有能高蟹甲草、川上氏忍冬、臺灣風輪菜、關山嶺柳、高山馬先蒿、裂緣花、塔塔加龍膽、高雄龍膽、高氏桑寄生、大武貓兒眼睛、平枝舖地蜈蚣、臺灣蚊子草等12種，目前未有被盜採之危險，但仍宜定期調查，確保其生育地完整。
英文摘要
1. Study Background: The Kuanshanlingshan area is located at the southern part of the Yushan National Park in Taiwan. The Takuanshan chanel is the highest area of the South-Cross transactional way and many tourists arrived to here. Although some researches have been conducted in this area, most of them focused on plant taxonomy or the classification of vegetation types. Therefore, this study is aim to investigate the species composition and vegetation types of the Kuanshanlingshan area. 2. Study Methods and Processes: After preparatory works, such as literature reviewing, fields survery, vegetation type selecting, we complied a distribution map of study sites. Special attention was focoused on rare species and the habitat type, population size, and suggestions for conversation are also provided. 3. Important Findings: A total of 241 vascular plants belonging to 68 families and 165 genera were recorded in this inventory. There are 48 ferns, 7 gymnosperns, 155 dicotyledons and 32 monocotyledons. A new recorded species Galium paradoxum Maxim. was collected in the Tsuga dominated forest. There are 12 rare species, i. e. Parasenecio nokoensis (Masamune & Suzuki) C. -I Peng & S. W. Chung, Lonicera kawakamii (Hayata) Masamune, Clinopodium laxiflorum (Hayata) Mori var. taiwanianum T. H. Hsieh & T. C. Huang, Salix okamotoana Koidz., Pedicularis ikomai Sasaki, Shortia rotundifolia (Maxim.) Makino, Gentiana tatakensis Masam., Gentiana kaohsiungensis C. H. Chen & J. C. Wang, Loranthus kaoi (Chao) Kiu, Chrysosplenium hebetatum Ohwi, Cotoneaster horizontalis Dcne, and Filipendula kiraishiensis Hayata. Six vegetation types are dominated in this area, i. e. alpine herb vegetation dominated by Artemisia kawakamii Hayata; alpine shrub vegetation dominated by Juniperus formosana Hayata; Juniperus vegetation dominated by Juniperus squamata Lamb. var. morrisonicola (Hayata) Li & Keng; Abies vegetation dominated by Abies kawakamii (Hayata) Ito; Tsuga vegetation dominated by Tsuga chinensis (Franch.) Pritz. ex Diels var. formosana (Hayata) Li & Keng; Pinus vegetation dominated by Pinus taiwanensis Hayata. 4. Main Suggestions and Recommendations: a. Twelve rare species are recorded in this inventory. Although they are safety now, consisting mornitour are needed. b. In the east side of Kuanshanlingshan, the Pinus forest were damaged by large landslide. This special event can provide for dynamic study of Pinus forest and other related studies in the future.
