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題 名 | 澎湖群島東南海域五個島嶼陸域維管束植物的物種調查=A Species Inventory of Terrestrial Vascular Plants on Five Islands Located in Southeastern Penghu Archipelogo |
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作 者 | 蕭志榮; 李建堂; 許立志; 林俊全; 方引平; 李玲玲; | 書刊名 | 國家公園學報 |
卷 期 | 20:2 2010.06[民99.06] |
頁 次 | 頁69-85 |
分類號 | 371.9232 |
關鍵詞 | 物種調查; 相似度指數; 澎湖群島; 東吉嶼; 西吉嶼; 東嶼坪嶼; 西嶼坪嶼; 鋤頭嶼; Species inventory; Similarity index; Penghu Archipelogo; Dongji-yu; Sigji-yu; Dongyuping; Siyuping; Tsuto-yu; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究調查澎湖東南海域東吉嶼、西吉嶼、東嶼坪嶼、西嶼坪嶼和鋤頭嶼等五座島嶼的陸域維管束植物,共記錄44科127屬158種植物。其中面積最大的東吉嶼(1.54 km2)有最多的物種數125種,而面積最小的鋤頭嶼(0.09 km2),其物種數最少,只有29種。記錄物種中,澎湖決明(Cassia sophora L. var. penghuana Y. C. Liu et F. Y. Lu)、密毛爵床(Justicia procumbens L. var. hirsuta Yamamoto)、臺西大戟(Chamaesyce taihsiensis Chaw & Koutnik)、臺灣耳草(Hedyotis taiwanense S. F. Huang & J. Murata)、臺灣虎尾草(Chloris formosana (Honda) Keng)和絹毛馬唐(Digitaria sericea (Honda) Honda)等6種為臺灣的特有種。各島面積與物種數之間呈顯著相關(=0.05),但是西嶼坪嶼的面積小於東嶼坪嶼和西吉嶼,卻具有較多的物種數,這可能因羊群數量有限,且為近期才引入該島所致。相似性指數分析顯示,相鄰島嶼間具有比較接近的物種組成關係,唯島嶼面積差距過大時,採用共有度指數來分析可能會較適宜。本調查島嶼之海岸地帶具有較原生的物種組成,而淡水濕地在氣候乾燥的澎湖群島中更是特別,這些都是值得保育的重要植物棲地。 |
英文摘要 | In this study, a species inventory of terrestrial vascular plants was carried out on five islands, Dongji-yu, Sigji-yu, Dongyuping, Siyuping, and Tsuto-yu, located on the southeast of Penghu Archipelogo. A total of 44 families were recorded and could be categorized into 127 genus and 158 species. The largest island, Dongji-yu (1.54 km2), has 125 species, while the smallest island, Tsuto-yu (0.09 km2), has 29 species. Six endemic species of Taiwan were recorded in this study, including Cassia sophora L. var. penghuana Y. C. Liu et F. Y. Lu, Justicia procumbens L. var. hirsuta Yamamoto, Chamaesyce taihsiensis Chaw and Koutnik, Hedyotis taiwanense S. F.Huang & J. Murata, Chloris formosana (Honda) Keng, and Digitaria sericea (Honda) Honda. Analysis showed a significant relationship between the island’s area and the number of its species (=0.05). However, Siyuping had more species than Sigji-yu and Dongyuping even though its area was smaller than that of the other two islands. This is probably because goats were only recently introduced into Siyuping and has limited population. The similarity index of Sorensen was used to analyze the floristic relationship among the islands investigated. Results showed that adjacent islands have a close floristic relationship. However, common plant index might be more suitable for floristic relationship analysis than Sorensen similarity index, as the two islands are not comparable in size. The study also showed that coastal areas consist of more native species than inland areas in the islands, and that wetlands are rare in the arid environment of Penghu Archipelago. Thus, those habitats are especially important for vegetation conservation. |
本系統中英文摘要資訊取自各篇刊載內容。