查詢結果分析
相關文獻
- 塔塔加高山生態系長期生態研究--塔塔加臺灣鐵杉林之林相結構與更新之探討
- 留存萌蘗枝數對銀合歡萌芽更新林分生物量和木材比重的影響
- 鳳凰山區天然林植群結構及更新之研究
- 可變結構控制系統在橋樑結構控制之研究
- Classification of Schooling Structures of Engraulis japonica by Processing the Hydroacoustic Signal and Discriminant Analysis
- 新一代企業家談管理(20):企業如何更新其組織結構?
- 高雄港市的發展與衝突--新草衙更新與紅毛港遷村的結構化分析
- 臺北地區參與都市更新居民滿意度與忠誠度之研究--ECSI模式之實證分析
- 燃煤電廠更新擴建--土建工程簡介
- Impacts of Disturbance on the Population Structure and Regeneration Status of Tree Species in a Central Himalayan Mixed-Oak Forest, India
頁籤選單縮合
題 名 | 塔塔加高山生態系長期生態研究--塔塔加臺灣鐵杉林之林相結構與更新之探討=Long-term Ecological Research on Tatachia Alpine Ecosystem.--Study on the Structure and Regeneration Dynamics of Taiwan Hemlock(1) |
---|---|
編 次 | 1 |
作 者 | 李國忠; 許世宏; 關秉宗; | 書刊名 | 國立臺灣大學農學院實驗林研究報告 |
卷 期 | 14:2=228 2000.06[民89.06] |
頁 次 | 頁61-69 |
分類號 | 436.12 |
關鍵詞 | 高山生態系; 臺灣鐵杉; 結構; 更新; Alpine ecosystem; Taiwan hemlock; Structure; Regeneration; |
語 文 | 中文(Chinese) |
中文摘要 | 塔塔加高山生態系研究站為臺灣長期生態研究(LTER)之一部份,為臺灣海拔最高之長期生態研究站,研究區海拔自2,500至山頂之3,952m,主要植群包括:高山草原、臺灣二葉松林(Pinus taiwanensis)、臺灣紅豆杉林(Taxus sumatrana)、臺灣紅檜林(Chamaecyparis formosensis)、臺灣雲杉林(Picea morrisonicola)、臺灣鐵杉林(Tsuga chinensis var. Formosana)、臺灣冷杉林(Abies kawakamii)、玉山圓柏林(Juniperus squamata)與高山寒原等各種生態系,是臺灣地區典型的山地型冷溫帶及寒帶生態區域。自新中橫通車與玉山國家公園設立若干遊憩據點以來,大量人口進入此一區域,使得本區適合於探討自然干擾與人類衝擊對生態系的影響。本研究計劃乃針對塔塔加高山地區內主要森林植群之一:臺灣鐵杉林進行林分之結構調查更新研究,調查方式以設置1ha之永久樣區,並於其內設定10×10m2的小樣區,分別調查各小區內的樹種、株數、胸高直徑,地面覆蓋植物以覆蓋比率估算之。本永久樣區內上層林木以臺灣鐵杉為主,共計122株立木,胸徑為5~230cm,年齡約從20~950年以上,各小區內均未見臺灣鐵杉小苗出現,但在樣區外的道路邊坡上可見密生之小苗;樣區內亦見紅檜之存在,共計11株,胸徑在10~230cm之間,亦未見小苗發生;另外有華山松5株(19~110cm),昆欄樹6株(2~18c)。各小區林下均以箭竹為主要覆蓋植物,覆蓋率為15~100%,上層木愈少的小樣區之箭竹覆蓋率愈高,此種高密度的箭竹覆蓋現象可能是造成上木小苗無法出現或存活的原因之一。 |
英文摘要 | As one of the Taiwan Long Term Ecological Research programs, Tatachia Alpine Ecological Research site is located at the central part of Taiwan. The altitude within the research site ranges from 2,500m to the highest peak of Taiwan, Yushan, at 3,952m asl. The main vegetation types within the research area include alpine grassland, Taiwan red pine (Pinus taiwanensis), Taiwan yew (Taxus sumatrana), Formosan red cypress (Chamaecyparis formosensis), Taiwan spruce (Picea morrisonicola), Taiwan hemlock (Tsuga chinensis var. Formosanna), Taiwan fir(Abies kawakamii), high mountain juniper (Junciperus squamata) and alpine tundra. The main objective of this study was to understand the structure and regeneration dynamics of Taiwan hemlock forests within the research site. A permanent one-ha plot was established and subdivided into 100 10×10m subplots. Within each subplot, the species, diameter at breast height (DBH) and relative location of each tree were identified and recorded. Ground vegetation coverage was also estimated. The inventory results showed that the dominant tree species within the plot was Taiwan hemlock, with a total of 122 individual, DBH ranging 5-230cm, and age ranging 20-950 years. No seedlings were found within the plot, but they could be found on adjacent roadside. Taiwan red cypress could also be found within the plot with DBH ranging 10-230cm. Yushan arrow bamboo was the main ground vegetation species within the plot, with coverage rate ranging 5-100%. Plots that had fewer trees usually had higher bamboo coverage rates. It was believed that such a high coverage rate by Yushan arrow bamboo was the main reason that Taiwan hemlock could not regenerate successfully with the permanent plot. |
本系統中英文摘要資訊取自各篇刊載內容。