Characteristics of Outdoor Air Microbes Pollution in Summer in Huangshan Scenic Spot

Abstract:

The concentration of airborne microbes in summer tourism season in Huangshan Scenic Spot was measured by fallen plate method at l4 collection sites. The study on the community structure and distribution characteristics of outdoor airborne microbes was carried out. The results showed that the average concentration of the bacteria, fungi and total microbes in the outdoor environment were 0.41′104 CFU/m3, 0.34′ 104 CFU/m3 and 0.75′104 CFU/m3 respectively, and the average percentage of fungi of the total was 45.9%. These indicated that the outdoor air had been polluted by airborne microbes. The preliminary identification was made on the bacteria and fungi at different sampling sites and the results showed that the dominant bacteria mainly belonged to Bacillus, Staphylococcus, Micrococcus and Pseudomonas, and the average percentage of the total amount of the bacteria was 37.7%, 17.2%, 10.1% and 9.8% respectively; the dominant fungi belonged to Cladosporium, Mycelia sterilia, Penicillium and Alternaria, and the average percentage of the total amount of the fungi were 40.4%, 35.0%, 5.6% and 4.3% respectively. The results indicated that the distribution characteristics of air microbes are affected not only by topographical and climatic characteristics, but also by factors such as tourist activities, animals and plants.