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題 名 | 宜蘭東北區之山地植群多變數分析=Multivariate Analysis of Montane Vegetation in North-Eastern Ilan |
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作 者 | 陳子英; 俞秋豐; 宋梧魁; 程宗德; | 書刊名 | 國立臺灣大學農學院實驗林研究報告 |
卷 期 | 16:3=237 2002.09[民91.09] |
頁 次 | 頁201-214 |
分類號 | 436.122 |
關鍵詞 | 宜蘭東北區; 植群分類; 分布序列; Northeastern Ilan; Vegetation classification; Ordination; |
語 文 | 中文(Chinese) |
中文摘要 | 宜蘭東北區位於宜蘭縣之北側,冬季受東北季風之影響,稜線之植群因風衝的影響多形成低矮且密緻之矮林。本研究以45個樣區、7個環境因子及498種植物,利用降趨對應分析(DCA)及雙向指標種分析法(TWINSPAN),將本區之植群分成5個植群型,其下再分成6個亞型如下:I.由森林植群組成的A.金平氏冬青—豬腳楠型分布於主稜、支稜及上坡,依海拔高度可再細分成A1.長葉木薑子—大明橘亞型,分布於海拔525-920m以及A2.小葉樹杞—水金京亞型,分布於海拔155-700m;B.白肉榕—森氏紅淡比型,分布於低海拔下坡及溪谷;C.臭黃荊—豬腳楠型,分布於低海拔中坡及支稜;及由II.高草植群組成的D.臺灣胡頹子—白背芒型與E.包籜矢竹型。 在大溪的窖竂山、七兄弟山、鶯石尖一帶,植群保存尚稱完整,並保存有臺灣三角楓、豔紅鹿子百合等稀有物種,可視為本區之熱點地區。經與基隆火山群、七星山或大屯山區的植群相比較,在硬葉林的樹種上本區有較的金平氏冬青,可視為本區的特徵種。 |
英文摘要 | This study investigated the montane vegetation in northeastern corner of Ilan county, which is influenced by strong wind of northeastern monsoon. A total of 498 plants and 7 envion-mental factors in 45 stands were analyzed by Detrended Correspondence Analysis (DCA) and Two-Way Indicatory Species Analysis (TWINSPAN). The analyses recognized 6 subtypes under 5 main vegetation types as follows: I.Forest: A.Ilex maximowicziana—Machilus thunbergii type is located at the main ridge and upper slope. It can be divided into 2 subtypes: A1.Litsea acuminata—Myrsine sequinii subtype is located between 525 and 920m. A2.Ardisia quinquegona—Wendlandia formosana subtype is located between 155 and 700m. B.Ficus virgata—Cleyera japonica var. morii type is located at lower slope and valley of lower altitude. C.Premna microphylla—Machilus thunbergii type is located at middle slope of lower altitude. II.Tall grassland: D.Elaeagnus formosana—Miscanthus sinensis var. glaber type. E.Pseudosasa usawai type. Mountain area near Dahshi connecting Jiawliau Mt., Chishiongdih Mt. and Ingshyrjian is largely covered by natural vegetation containing several rare species, such as Acer buergerianum var. formosanum and Lilium speciosum var. gloriosoides. These locations can be considered as hotspots of northeastern Ilan. Compared with the vegetation at Keelung volcanic Mt., Chishing Mt. or Dahtwen Mt., the sclerophyllous forest in this studied area consists of more Ilex maximowicziana, a characteristic species of northeastern Ilan. |
本系統中英文摘要資訊取自各篇刊載內容。