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題 名 | 野火影響雪山地區植群之研究=Studies on the Effects of Wildfires on the Vegetation at Shesan Area |
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作 者 | 陳明義; 施纓煜; | 書刊名 | 國家公園學報 |
卷 期 | 9:1 1999.06[民88.06] |
頁 次 | 頁1-10 |
分類號 | 436.31 |
關鍵詞 | 雪山; 臺灣冷杉; 林火; 玉山圓柏; Shesan; Taiwan fir; Abies kawakamii; Fire; Juniperus squamata; |
語 文 | 中文(Chinese) |
中文摘要 | 按年輪追蹤,雪山三六九山莊一帶之臺灣冷杉(Abies kawakamii (Hayata) Ito)林約於1903年及1957年曾發生林火。當地白木林應是林火所造成,白木多已腐朽、傾倒,白木林景觀逐漸消失中。白木林下以禾草類及落葉性灌木為優勢,其覆蓋度呈季節消長;鄰近未火燒的臺灣冷杉林,有少許玉山圓柏(Juniperus squamata Buch. -Ham.) 混生,地被層以苔蘚類及玉山鬼督郵(Ainsliaea reflexa Merr. var. nimborum Hand.-Mazz.) 為主。臺灣冷杉林與白木林間推移帶的臺灣冷杉苗木,主要分布在由林緣向林內32m的範圍內,且苗木密度與坡向有關;林外的苗木則僅出現於距林緣 9m 的範圍內。1991年1月發生於雪山主峰東南坡的林火,全面燒燬約11公頃的玉山圓柏及玉山杜鵑(Rhodoendron pseudochrysanthum Hayata)。由於冠層開釋,促增了地被植物的拓殖。火燒後迄未發現玉山圓柏天然下種苗。即使不再發生林火,演替為原植群所需之年代勢必十分長久。 |
英文摘要 | The white snag landscape near the Shesan 369 Cabin was resulted from fires of Taiwan fir (Abies kawakamii)forest. Based on dendrochronological studies of fire-scarred trees, the last two fires occured around 1903 and 1957. Those snags have rotten and fallen down gradually. The dominant understory species were grasses and deciduous shrubs at the burned snag site, and were moss and Ainsliaea reflexa var. nimborum at the unburned fir forest. Most fir seedlings establish in the range between 32m from edge to forest interior and 9m from edge to exterior. The fire that occurred at the southeastern slope of Shesan peak in Jan. of 1991 completely killed about 11 hectares of Juniperus squamata and Rhododendron pseudochrysanthum. So far no postfire regeneration of Juniperus squamata has been found. Even though there is no more fire, it will still take very long time to recover the original vegetation successfully. |
本系統中英文摘要資訊取自各篇刊載內容。