查詢結果分析
來源資料
頁籤選單縮合
題 名 | 合歡北峰之囓齒類及其對針葉樹種子之取食 |
---|---|
作 者 | 賴國祥; 陳明義; | 書刊名 | 國家公園學報 |
卷 期 | 3 1991.12[民80.12] |
頁 次 | 頁165-178 |
分類號 | 389.6 |
關鍵詞 | 北峰; 合歡; 取食; 針葉樹; 種子; 齒類; |
語 文 | 中文(Chinese) |
中文摘要 | 為探討亞高山推移帶動植物族群間之相互關係,特別是囓齒類對針葉樹苗木建立之可能影響,於1989年11月至1991年10月間在合歡北峰進行囓齒類族群動態及其對主要針葉樹種子取食之調查。在合歡北峰共調查到5種囓齒類動物,為高山田鼠、森鼠、高山自腹鼠、長尾齣與短尾齣。其中高山田鼠為草生地之最優勢種,高山自腹鼠僅出現於林下,森鼠、長尾齣普遍出現各樣區,而短尾駒則較稀有。各鼠種出現之時期及高峰期不同,其季節性消長很明顯。囓齒類之數量於3月達最低後漸回升,7、8、9月族群量激增,至12月、1月達顛峰後下降,且再度於3月急降。食物之供給及氣候狀況似為影響囓齒類族群動態之重要因素,囓齒類動物對臺灣冷杉及鐵杉種子之取食量以11月至次年1月最多,高達當月種子下種量之20-45。1989年10月至1990年9月間之總取食量,約佔臺灣冷杉種子總下種量之17.2;約佔鐵杉之22.5。按此取食量,於結實較差之年度,囓齒類對苗木之建立影響甚大。 |
英文摘要 | For studying the relationship between animals and plants at subalpine ecotones,especially the potential effects of rodents on the seedling establishment of conifers,population dynamics of rodents and their seed consumptions on conifers at HohaunNorth Mt. were investigated during Nov. of 1989 to Oct. of 1991. Five rodent speciesfound at Hohuan North Mt. were Microtus kikuchii Kuroda, Rattus culturatus Thomas, Apodemus semotus Thomas, Soriculus fumidus Thomas and Anourosorexsquamipes Kuroda. Microtus kikuchii was the dominant at grasslands; Rattus culturatus was only found under the forest; AnourosQrex squamipes was rare at this area.Five species showed different peaks and seasonal changes. Rodent density waslowest in March and then gradually increased. It peaked during December to January and then declined. The peak of conifer seed consumption by rodents occurredfrom November to January. 20-45 of seedfall in these months were consumed. Theannual consumption was about 1 million seeds/ha. (17.2 of seedfall) for Kawakamifir and 3.5 million seeds/ha. (22.5 of seedfall) for Chinese hemlock. Consumptionloss should have significant effects on seedling establishment in failure crop years. |
本系統中英文摘要資訊取自各篇刊載內容。