| Airborne fungi, important composition of bioaerosols of urban ecosystem, are one of the most important pollutants in the atmosphere and also associated directly with natural ecological balance and many life phenomena. At the same time, microbe bioaerosol have important effect on air physical and chemical character. Airborne fungi are being proposed as a cause of adverse health effects. Elevated levels of fungal concentrations in the air are proved to be associated with decreased lung function, increased adverse respiratory symptoms such as asthma, allergic rhinitis, toxicoses, infections and so on..The research is one of content of the project of knowledge innovation of CAS. An investigation on the fungal types, concentrations, and their dynamic variation in outdoor environments was carried out in three sampling sites which locate in three different functional areas respectively around one year in Beijing. The purpose of the research was hoping to provide theory basis for environment protection, improving air quality and disease control caused by airborne fungi.Results show that 19 genus including 40 specis were identified, they are Cladosporium, Alternaria,Penicillium, Aspergillus, Trichoderma, Paecilomyces, Mucor, Neurospora, Rhizopus, Fusarium, Actinomucor, Emericella, Endomyces, Neosartorya,Phoma,Talaromyces, Trichothecium, Yeasts and nonsporulating fungus. The most common culturable airborne fungi in all seasons and all functional areas were Cladosporium, nonsporulating fungi, Alternaria, Penicillium and Aspergillus. The most dominant fungus was Cladosporium, which contributed to more than 1/3 of the total.The fungal concentrations varied widely and the average was 1164.8 + 73.2 CFUm-3, ranging from 23.6 to 13959.5 CFUm-3.The fungal levels in Research Center For Eco-Environmental Science (RCEES) and Beijing Botanic Garden(BBG) were highest in the fall and summer, and lowest in the winter and spring, while the seasonal...
|
PDF Full Text Request