The land-use configuration has huge impact on emission sources and also a major influencing factor, which ultimately determine the microbial count, composition and seasonal dynamics of bioaerosols at respective site. Despite this, very few studies compare bioaerosols exposure at different land-use sites. The aim of the present study was to measure and compare the aerosolised bacterial and fungal counts across seasons using active Anderson cascade impactor at different land-use configurations in an urban metropolitan. The counts of aerosolised bacteria and fungi were estimated across five seasons of a tropical climate. A mixed-effect model showed that the season and land-use configuration have a bearing on microbial counts. Season and land use interact in a complex manner to produce bioaerosol count variability. Meteorological parameter (temperature and relative humidity) had a significant effect on microbial counts at all land-use configurations, but they could not fully explain variations of microbial counts in the mixed model.

中文翻译：

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城市环境中不同户外土地利用点生物气溶胶的时空特征

土地利用配置对排放源的影响巨大，也是一个主要影响因素，最终决定了各自站点生物气溶胶的微生物数量、组成和季节动态。尽管如此，很少有研究比较不同土地利用地点的生物气溶胶暴露。本研究的目的是使用活跃的安德森级联撞击器在城市大都市的不同土地利用配置下测量和比较跨季节的气溶胶细菌和真菌计数。在热带气候的五个季节中估计了气溶胶细菌和真菌的数量。混合效应模型表明，季节和土地利用配置对微生物数量有影响。季节和土地利用以复杂的方式相互作用以产生生物气溶胶计数变异。