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| 題 名 | 明德水庫集水區次生林植群之研究=Study on the Secondary Forest Vegetation in the Watershed of Ming-De Reservoir |
|---|---|
| 作 者 | 胡大中; 應紹舜; | 書刊名 | 國立臺灣大學生物資源暨農學院實驗林研究報告 |
| 卷 期 | 18:4=246 民93.12 |
| 頁 次 | 頁285-301 |
| 分類號 | 436.12 |
| 關鍵詞 | 植群分析; 降趨對應分析; 雙向列表比較法; Vegetation analysis; Detrended correspondence analysis; DCA; Two-way indicator species analysis; TWINSPAN; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 本研究目的在分析明德水庫集水區林分組成和森林結構。研究區為三尖山及八卦力山,海拔高度約100至1001公尺處,總計調查分析161個樣區,每個樣區大小為10×10平方公尺。研究區內共記錄347種維管束植物,分別為蕨類植物17科35種,裸子植物2科4種,雙子葉植物80科267種,單子葉植物15科41種。降趨對應分析(DCA)的結果,顯示海拔高度和地形是影響植群分佈最重要的因素。經雙向列表比較法(TWINSPAN)分析後,植群可分為五個植群型及四個亞型,分別為:Ⅰ、大明橘-長尾栲型Ⅱ、厚殼桂-豬腳楠型Ⅲ、相思樹型Ⅳ、九芎-大葉楠型:Ⅳa、千年桐-大葉楠亞型Ⅳb、澀葉榕-大葉楠亞型Ⅴ、軟毛柿-鵝掌柴型:Ⅴa、紅皮-鵝掌柴亞型Ⅴb、青剛櫟-鵝掌柴亞型。 根據調查分析本地區之木本植物胸高直徑大於或等於l公分的種類之歧異度,Simpson歧異度指數平均為0.8821,Shannon歧異度指數平均為2.4992及均勻度指數平均為0.8982。本研究區優勢樹種重要值如下:鵝掌柴(5.40)、豬腳楠(3.16)、山黃麻(2.99)、山紅柿(2.99)、五掌楠(2.44)。本研究除對集水區內之植群進行分析外,並分析各林型之族群構造。其結果為大部份之優勢種如楠木類等森林均呈反J形分佈,表示此植群具有自行更新能力。若不再受干擾,未來可能演替為以楠櫧類為優勢之闊葉樹森林。 |
| 英文摘要 | The aim of this study is to analyze the stand composition and forest structure of the Ming-De reservoir watershed. The altitudes of the area range from 100 to 1,001 meters above sea level. A total of 161 plots, each l0m×l0m in size, were investigated in the study area. A total of 347 species were recorded at research area; among them, 17 families with 35 species were ferns, 2 families with 4 species were gymnosperms, and 80 families with 267 species were dicotyledons, 15 families with 41 species were monocotyledons. The result of detrended correspondence analysis (DCA) shows that altitude and topographic are the most important factors that affect the distribution of the vegetation. Five main types and four subtypes of vegetation were recognized by the TWIN-SPAN method in this study. They are: Ⅰ. Myrsine sequinii-Castanopsis cuspidate type Ⅱ. Cryptocarya chinensis-Machilus thunbergii type Ⅲ. Acacia confusa type Ⅳ. Lagerstroemia subcostata-Machilus kusanoi type two subtypes are recognized: Ⅳa. Aleurites Montana-Machilus kusanoi subtype Ⅳb. Ficus gibbosa-Machilus kusanoi subtype Ⅴ. Diospyros eriantha-Schefflera octophylla type two subtypes are recognized: Ⅴa. Styrax suberfo1ia-Schefflera octophylla subtype Ⅴb. Cyclobalanopsis glauca-Schefflera octophylla subtype Species diversity of woody plants with a DBH≧1.0cm are 0.8821 (Simpson's index), and 2.4992 (Shannon's index), and evenness index is 0.8982。The Importance Values of the study species are as follows: Schefflera octophylla 5.40, Castanopsis cuspidate 4.88, Psychotria rubra 3.25, Engelhardia roxburghiana 3.15, Acacia confusa 3.14, Machilus kusanoi 3.12, Machilus thunbergii 3.16, Trema orientalis 2.99, Diospyros morrisiana 2.99, Neolitsea konishii 2.44. In addition to analyze the vegetation of the watershed, the results of population structure analysis show that the most dominant species of the broad-leaved forest of Machilus has reverse J-shaped pattern, which implies that the forest has the ability to regenerate itself. |
本系統中英文摘要資訊取自各篇刊載內容。