Correlation between distribution of air-borne fungi spore and climate in Huangyan district of Taizhou city

Objective To analyze the relationship between the characteristics of airborne fungi spores distribution and meteorological factors in Huuangyan district of Taizhou city in Zhejiang province,and to provide references for prevention of airborne fungi-related allergic diseases.Methods The airborne bacteria samples were collected with 24-hour continuous exposure sheet from September 1,2012 to August 31,2013 in Huangyan district and daily meteorological data were collected;the correlation between changes in airborne fungi spores and weather conditions was analyzed.Results Totally 336 exposed sheets were collected and 13 822 spores of 60 kinds of fungus were identified from the samples.Of the fungi identified,31.42%were black spores;23.66%were Cladosporium fungus;and 21.83%were Mucor species.Two peaks for the distribution of airborne fungal spores were observed during March to May and April to September,with higher airborne fungal spore distribution from March to October in a year.There was a significant seasonal difference in the number of airborne fungal spores detected (F=900.634,P=0.0000),with the numbers of 1705.41±303.28 in the spring,1384.71±242.14 in the summer,760.44±109.24 in the autumn,and 221.35±60.46 in the winter,respectively.The number of airborne fungal spores increased significantly with the increment of daily average temperature when the temperature under 15 degree Celsius and the number tended to be stable when the daily average temperature ≥ 15 degree Celsius;the number was inversely correlated with wind speed and the number increased first and then decreased with the increment of rainfall.Conclusion The airborne fungi spores distribute extensively in the ambient air and the number of fungi spores in the air relates with meteorological factors such as temperature,wind speed,and rainfall.