Culturable airborne fungi in outdoor environments in Beijing, China
Culturable airborne fungi in outdoor environments in Beijing, China
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DOI：
10.1016/j.scitotenv.2005.01.032
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发表时间：
2005-11-01
影响因子：
9.8
通讯作者：
Lin, XQ
中科院分区：
文献类型：
--
作者：
Fang, ZG;Ouyang, ZY;Lin, XQ
空气中的真菌被认为是对健康产生不利影响的原因。它们可能通过过敏、感染和毒性对人类健康产生不利影响。此外，它们对北京城市空气质量有很大的影响。本研究对北京城区空气中可培养真菌进行了为期一年的系统调查。采用FA-1型采样器从3个采样点采集真菌样品，每天3次，每次3 min，每月连续采集3 d。结果表明，可培养真菌浓度范围为24 ~ 13960 CFU/m3，平均值为1165 CFU/m3，中位数为710 CFU/m3。北京生态环境科学研究中心和北京植物园周围绿化较好的区域真菌浓度显著高于西直门城市密集和交通繁忙的区域（*P < 0.001），但与植物园之间差异不显著（P > 0.05）。RCEES和BBG的真菌浓度在不同季节变化显著，夏季和秋季较高，春季和冬季较低。3个采样点的真菌浓度在春、冬季间差异不显著（P > 0.05）。本研究共鉴定出14属40种可培养真菌。其中青霉属的种类最多，占总分离真菌种类的50%以上。枝孢属是最主要的真菌类群，占总真菌浓度的三分之一以上，其次是无孢子菌株、链格孢属、青霉属和青霉属。枝孢属在RCEES中的浓度百分比显著高于XZM（*P < 0.05），青霉属（**P < 0.01）和曲霉属（*P < 0.05）在XZM中的浓度百分比显著高于RCEES和BBG。至于其他组别的浓度百分比，各采样点之间没有观察到显著差异。
Airborne fungi are being proposed as a cause of adverse health effects. They may adversely affect human health through allergy, infection, and toxicity. Moreover, they have a great influence on urban air quality in Beijing. In this study, a systematical survey on the culturable airborne fungi was carried out for I year in Beijing urban area. Fungal samples were collected for 3 min, three times each day, and continued for three consecutive days of each month with FA-1 sampler from three sampling sites. Results showed that the culturable fungal concentrations ranged from 24 CFU (Colony forming units) /m(3) to 13960 CFU/m(3), and the mean and median was 1165 CFU/m(3) and 710 CFU/m(3), respectively. Fungal concentrations in the greener area around the Research Center for Eco-Environmental Sciences (RCEES) and Beijing Botanical Garden (BBG) were significantly higher than in the densely urban and highly trafficked area of Xizhimen (XZM) (***P < 0.001), but no significant difference was found between RCEES and BBG (P > 0.05). The variation of fungal concentrations in different seasons was significant in RCEES and BBG, where the concentrations were higher in Summer and Autumn, and lower in Spring and Winter. However, there were no significant differences in fungal concentrations between the Spring and the Winter for three sampling sites (P > 0.05). Fourteen genera, including 40 species of culturable fungi, were identified in this study. Penicillium, with the most abundant species, which comprised more than 50% of the total isolated fungal species. Cladosporium were the most dominant fungal group, and contributed to more than one third of the total fungal concentration, followed by non-sporing isolates, Alternaria, Pencillium and Asperigillus. The concentration percentage of Cladosporium was significantly higher in RCEES than in XZM (*P < 0.05), and the concentration percentages of Penicillium (**P < 0.01) and Aspergillus (*P < 0.05) were higher in XZM than in RCEES and in BBG. For other groups' concentration percentages, no significant differences were observed among the sampling sites.