摘要或動機

本研究工作自2001 年7 月至2002 年6 月止，在臺北市內湖區金面山進行地衣實地探勘採集調查，以位於臺北市內湖區之麗山高級中學之校園為中心點，範圍由校園金面山至學校前門所面對的港墘路與環山路口。應用「外部型態比較」，「切片觀察(徒手切片技術)」與「化學分析(薄層色層分析Thin Layer Chromatography, TLC)」等三種方法，鑑定所採集之地衣所屬種類，並探討空氣污染程度對金面山地衣類分佈狀況的影響。調查至2002年6月為止，本研究已發現生長於金面山區之數種地衣，其中殼狀地衣包含有：癩屑衣屬(Lepraria)、球粉衣屬(Spheophorus)、大孢衣屬(Megalospora)等三屬；屬於莖狀地衣的僅有石蕊屬(Cladonia)；為葉狀地衣的則有：黃梅衣屬(Xanthoparmelia)、裸緣梅衣屬(Parmotrema)、梅衣屬(Parmelia)等三屬，合計共七個屬。本研究針對臺北市金面山區及麗山高級中學之校園附近市區道路地衣類分佈的情形做調查，結果發現行道樹上之附生地衣在較靠近山區的地方，於樹幹上的生長覆蓋面積才會有明顯增加的情形，又其中在市區道路上只發現殼狀地衣生長，而莖狀及葉狀地衣則出現於金面山頂附近，所以就此情況而言，除了金面山區外，市區已呈現地衣沙漠化之狀況，間接顯示，市區的空氣污染是相當嚴重的。本研究將所調查結果之各屬地衣類進行特徵描述與分佈地區之標定，以便於日後臺北市內湖區金面山地衣之鑑識及後續相關研究之進行。This research was carried out between July 2001 and June 2002 on the Jinmian Mountain in Neihu,\r
Taipei City and consisted of an on-the-spot exploration and collection of lichen. The Taipei Municipal\r
Lishan High School was the center of this research, and the researched territory consisted of the areas\r
between the mountain at the back of the school (Jinmian Mountain) and the intersection between\r
Gangcian Rd. and Huanshan Rd. in front of the school’s main gate. Comparison of external appearance,\r
dissectional observation (manual breaking technique), and chemical analysis (Thin Layer\r
Chromatography, TLC) were the research methods applied to determine the genus of the lichen and the\r
influence of the degree of air pollution on the distribution of the lichen.\r
By the end of the research in June 2002 the presence of three types of lichen on the Jinmian\r
Mountain was observed: crustose lichen: Lepraria, Spheophorus, Megalospora; fruticose lichen: Cladonia;\r
foliose lichen: Xanthoparmelia, Parmotrema, Parmelia. Seven different genus of lichen have been found.\r
The research has been done on the distribution of these different genus of lichen in the area of the\r
Jinmian Mountain and The Taipei Municipal Lishan High School: By observation the sidewalk trees\r
near the mountain’s area, we found the covering area of the lichen on the sterns apparently increases,\r
while on the trees in the city district, only crustose lichen grow. The fruticose and foliose lichen only\r
grow near the top of the Jinmian Mountain. This impoverishment of the diversity of lichen in the city\r
district might (indirectly) be an indicator of the considerable decline of air quality in the city. The\r
outcomes of this research regarding the description and distribution of the lichens contribute to the\r
knowledge on lichens in the Jingmian Mountain area in the Neihu District, and may raise the similar\r
research in the future as well.