https://scholars.lib.ntu.edu.tw/handle/123456789/137720
標題: | 臺灣中南部楠梓仙溪上游集水區闊?森?的植被?型及物種組成 Vegetation Pattern and Woody Species Composition of a Broad-Leaved Forest at the Upstream Basin of Nantzuhsienhsi in Mid-southern Taiwan |
作者: | 楊國禎 ?笈克 謝長富 黃江綸 張又敏 管?豪 蘇志峰 邱少婷 Yang, K.C. Lin, J.K. Hsieh, C.F. Huang, C.L. Chang, Y.M. Kuan, L.H. Su, J.F. Chiu, S.T. |
關鍵字: | Broad-leaved forest;vegetation pattern;species composition;Forest Dynamics Plot;Nantzuhsienhsi;闊?森?;植被?型;物種組成;森?動態樣區;楠梓仙溪 | 公開日期: | 十二月-2008 | 卷: | 53 | 期: | 4 | 起(迄)頁: | 325-337 | 來源出版物: | Taiwania | 摘要: | 為?瞭解中海拔闊?森?的組成、結構及物種多樣性,本研究於臺灣中南部楠梓仙溪上游集水區設?一處8.37 公頃的森?動態樣區,樣區內所有胸高直徑大於1 公分之木本植物?登?其物種、胸高直徑、位置,並給予編號。結果紀??27 科64 種,共18,790棵木本植物。其中三個優勢的科別為樟科、殼斗科與?科,共佔?總?的78.8%;樣區中優勢的物種分別為長尾栲、假長?楠、長?木薑子及狹?櫟;森?結構方面,樹冠層以長尾栲為最優勢種?,次冠層以長?木薑子為最優勢,灌木層則為假長?楠與長?木薑子。將資?以雙向指標種分析法(TWINSPAN)進?植群分?後,呈現出四型植物社會:假長?楠型位於樣區東面及西面的底坡谷地,以及部分的下坡處;假長?楠-長尾栲型位於樣區中至下坡處,以及樣區中央乾涸的底坡谷地;木荷-長尾栲型出現在東側的?脊與上坡的區域,這三型屬於常?闊?森?,另外尚有臺灣赤楊型的??森?,位於樣區中偏西側的?脊與西南角的?脊上。樣區三種常?闊??型的分佈與地形有密?相關,且各?型的平均物種?、密?及底面積,從?脊到底坡谷地呈現逐漸下?的趨勢。顯示在楠溪樣區中,地形是影響常?闊?樹種分佈的重要因素。 A 8.37-ha plot of the broad-leaved forest at an elevation of about 2000 m in the upstream basin of the Nantzuhsienhsi River in mid-southern Taiwan was set up for long-term monitoring of forest dynamics. All stems with diameter at breast height (d.b.h.) ≧ 1 cm were identified, measured, tagged, and mapped to analyze the forest composition, structure and species diversity of the plot. A total of 18,790 woody plant individuals, belonging to 64 species in 27 families, were recorded. The dominant families were Lauraceae, Fagaceae, and Theaceae, accounting for 78.8% of total individuals. The dominant species were Castanopsis carlesii, Machilus japonica, Listea acuminate, and Cyclobalanopsis stenophylloides. The most abundant species in the canopy layer was Castanopsis carlesii, in the subcanopy layer was Listea acuminate, and in the shrub layer were Machilus japonica and Listea acuminata. Four plant communities were identified based on Two-way Indicator Species Analysis (TWINSPAN) classification, including three evergreen forest types and one deciduous forest type. The three evergreen types are Machilus japonica type, locating on the east and west valleys and partial lower slopes, Machilus japonica-Castanopsis carlesii type, locating on middle to lower slopes and the central dry valley, and Schima superba-Castanopsis carlesii type, locating on eastern ridge and upper slopes. The deciduous type is Alnus formosana forest which is distributed on mid-west and southwestern ridges. The means of species number, density and basal area for different forest types declined gradually from ridge to valley habitats. These results reveal that topography is an important factor which is closely related to the distribution of evergreen broad-leaved forest types in the plot. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/283436 |
顯示於: | 生命科學系 |
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5304_200812_1.pdf | 7.94 MB | Adobe PDF | 檢視/開啟 |
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