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題 名 | 臺灣南部槲樹植群生態之研究=Study on the Vegetation Ecology of Quercus dentata in Southern Taiwan |
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作 者 | 周富三; | 書刊名 | 國立臺灣大學農學院實驗林研究報告 |
卷 期 | 14:3=229 2000.09[民89.09] |
頁 次 | 頁169-177 |
分類號 | 436.12 |
關鍵詞 | 槲樹; 矩陣群團分析法; 列表比較法; 干擾; 更新機制; Quercus dentata; Matrix cluster analysis; Tabular comparison method; Disturbance; Regeneration mechanism; |
語 文 | 中文(Chinese) |
中文摘要 | 本文調查臺灣南部隘寮北溪上游,具有槲樹之4個次生森林和2個成熟森林的樹木組成、結構和動態。在6個20×30m的樣區中共出現47種木本植物(DBH>1cm,H>1.3m)。樣區都位在海拔800~1,400m的範圍內,坡度陡峭的山頂,稜線或上坡面,坡向大致朝南且面向溪谷,土壤為發育不完全的石礫和石塊,環境相當乾燥的生育地,使用矩陣群團分析法和列表比較法,將樣區分為槲樹-楓香亞型和青剛櫟亞型。前者屬於演替早期的森林,後者屬於演替後期的森林。Q1、Q2和Q4樣區是遭到原住民伐木和火災的大規模干擾後,經自然演替的次生林。Q3樣區是下層遭到砍伐的次生林。R1和R2是僅受單一樹倒干擾的成熟林。青剛櫟可藉由萌芽條和種子苗進行更新,被認為是更新補充良好的優勢樹種。反之,楓香被視為更新失敗且補充不良的優勢樹種。槲樹在受到傷害或大範圍的干擾後,會產生生長快速的萌芽條來補充種子苗更新的不足。因此,萌芽是槲樹的主要更新機制。 |
英文摘要 | The floristic composition, structure and dynamics of four secondary and two mature Quercus dentate stands were investigated in the north Ai-Liao stream, Ping-Tung Southern Taiwan. Forty-seven woody species (DBH≧1cm, H≧1.3M) were recorded within the six plots. The canopy of these stands were dominated by Quercus dentate, Liquidambar formosana and Cyclobalanopsis glauca. Quercus dentate, Liquidambar formosana and Cyclobalanopsis glauca. The characteristics of habitat could be identified as: altitudinal range from 800 to 1,400m, very steep slopes with undeveloped soil, peaks or ridges or upper slopes, and south aspect facing the stream. The matrix cluster analysis and tabular comparison methods were used to distinguish 2 forest subtypes, namely, Quercus dentate-Liquidambar formosana and Cyclobalanopsis glauca. The former belonged to early successional forest, the latter belonged to late successional forest. Q1, Q2 and Q4 stands were secondary forests initiated by large-scale disturbance, logged or fired by aboriginal people. Q3 stand was a secondary growth caused by local minor disturbance. R1 and R2 stands were nearly mature forests regenerated by small gaps formed by single falling tree. Cyclobalanopsis glauca could be Successfully regenerated by both sprouts and seedlings, so it had good reproduction and recruitment. On the contrary, Liquidambar formosana had poor production and recruitment. After disturbance, Quercus dentate could produce abundant sprouts for regeneration to complement the lack of seedlings. Therefore, a large-scale disturbance could be helpful to increase the population of Quercus dentate, and sprouting is its major regeneration mechanism. |
本系統中英文摘要資訊取自各篇刊載內容。