目標：了解台北國際花卉博覽會展區空氣中微生物濃度與菌群分布特性。方法：於二室內展區（爭艷館與未來館）與三戶外展區（爭艷館外七道彩虹花圃區、地景花海區與林下花圃花海區）定量空氣中細菌及真菌濃度並鑑定菌群。結果：未來館真菌濃度（394.9±326.9 cfu/m3）最高，顯著高於爭艷館（177.6±74.6 cfu/m3）（p<0.05），且7%未來館樣本真菌濃度高於環保署室內空氣品質真菌建議值（1000 cfu/m3）。細菌方面則以林下花圃花海區濃度最高（340.3±187.6 cfu/m3），爭艷館次之（299.6±171.5 cfu/m3）；且爭艷館內細菌濃度顯著高於爭豔館外七道彩虹花圃區（149.7±74.7 cfu/m3）（p<0.05）。五展區均以革蘭氏陽性桿菌為主（67.5%~82.7%），革蘭氏陽性球菌次之（7.9%~14.6%）。真菌亦不分展區皆以Cladosporium為主（46.4%~73.7%），Penicillium次之（4.1%~27.7%）。結論：花博展區空氣中微生物濃度並無顯著增高現象，僅有少部分室內展場樣本超過環保署建議值，顯示透過適當空調與環境管理，可有效控制大型花展室內空氣中微生物濃度。

Objectives: To investigate the concentration and distribution of airborne microbes at the Taipei International Flora Exposition. Methods: Airborne bacteria and fungi were quantified and categorized at indoor pavilions (Expo Dome and Pavilion of the Future) and outdoor locations (Floral Rainbows, Flower Landscape and Flower Base under a Tree). Results: The highest fungal concentration (394.9±326.9 cfu/m3) was found at Pavilion of the Future. This was significantly greater than that at the Expo Dome (177.6±74.6 cfu/m3) (p<0.05). Seven percent of the samples obtained from Pavilion of the Future exceeded the level of fungi (1000 cfu/m3) suggested by the Taiwan EPA for good indoor air quality. The highest bacterial concentration was found at Flower Base under a Tree (340.3±187.6 cfu/m3), followed by the Expo Dome (299.6±171.5 cfu/m3). Bacterial concentration at the Expo Dome was significantly higher than that at Floral Rainbows (149.7±74.7 cfu/m3) (p<0.05). Gram positive rods (67.5%~82.7%) were dominant at every site studied, followed by Gram positive cocci (7.9%~14.6%). The most identified fungi were Cladosporium (68.6%~73.7%), followed by Penicillium (41.3%~27.7%). Conclusions: Our results demonstrated no significant increase in the level of airborne microbes at the Flora Exposition. Only a few samples exceeded the level of airborne microbes suggested by the Taiwan EPA for good air quality. This finding supports the observation that airborne microbes may be efficiently controlled through proper air conditioning and environmental management.