嘉義縣低海拔地區崩塌地先驅植群之調查研究

本研究係針對嘉義縣番路鄉公田村及中埔鄉中崙村二地區，因地震及颱風所造成之不同崩塌裸地，共設置7個樣區，每個樣區由10個2×2m^2小樣區所組成，調查其初期之植群演替情形，調查結果共記錄維管束植物57科120屬142種。由重要值指數分析結果，五節芒為調查樣區中最優勢的先驅植物。另由群團分析結果顯示，不同類型之崩塌地會呈現出不同之植群型，本研究區域之崩塌地可區分為三型：即五節芒－波葉山螞蝗－台灣澤蘭型、相思樹－雙穗雀裨型及昭和草－藿香薊型，各崩塌地植群仍與其相鄰之對照區相似性較高。就植被覆蓋率而言，白鶴尖山的崩塌地樣區（第6樣區）有較高的相對覆蓋率，於崩塌地18個月後，天然先驅植群覆蓋率已達鄰近植群94.8%，相對之而大埔事業區第150林班之崩塌地樣區植被覆蓋度與相鄰對照樣區顯然較低，尤其第四樣區僅達16.6%，惟仍呈逐次增長之情形。同時由累次絕對優勢度調查分析證明，本研究樣區之崩塌地於15個月後平均覆蓋率已達50.8%~60.1%。

關鍵字

群團分析；崩塌地；先驅植物；植群演替

並列摘要

This study investigated the vegetation succession of the landslide areas caused by earthquake and typhoon at the low altitude in Chai-Yi county, Taiwain. Seven study plots were established at Gong-Tian village of Fan-Lu town and at Chong-Lu village of Chong-pu town. Totally 142 species belonging to 120 genera and 57 families were recorded in these plots. Dominant species were determined from the Important Value Index (IVI). Miscanthus floridulus was the most dominant one. Three main vegetation types were recognized by the Matrix Cluster Analysis were as follows: (1) Miscanthus floridulus-Desmodium sequax-Eupatorium formosanum type. (2) Acacia confuse-Paspalum distichum type. (3) Crassocephalum crepidoides-Ageratum conyzoides type. Based on field study, 6 plots at Chong-Lu village had high relative coverage. Compared the coverage of nature pioneer vegetation on the landslide area with adjacent vegetation, We found that the relative recoverage was up to 94.8%. But the study plots in Gong-Tian village had lower relative recoverage, especially No. 4 was only l6.6%. About 18 months after disturbance, the average absolute recoverage of plant coverage on landslide area ranged form 50.5% to 60.1%, among which has mostly contributed by natural invasion of pioneer plants.

並列關鍵字

Cluster analysis ； Landslide ； Pioneer species ； Vegetation succession

被引用紀錄

許迺翎（2005）。台灣地區氣溫差異與主要林植物分布之探討－以檜木、烏心石、九芎為例〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2005.02858

國際替代計量

嘉義縣低海拔地區崩塌地先驅植群之調查研究

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