title: [Carbon sources metabolic characteristics of airborne microbial communities in constructed wetlands].
abstract: Using BIOLOG-GN plates, this article describes the carbon sources metabolic characteristics of airborne microbial communities in a free surface-flow constructed wetland in different seasons and clarify the correlation between airborne microbial metabolic functions and environmental factors. The average well color development (AWCD), carbon metabolic profiles and McIntosh values of airborne microbial communities in different seasons were quite different. Analysis of the variations showed that AWCD in spring and summer differed significantly from that in autumn and winter (P < 0.01). In the same season, the degree of utilization of different types of carbon by airborne microbes was different. Summer had a significant difference from other seasons (P < 0.05). Dominant communities of airborne microbes in four seasons were carboxylic acids metabolic community, carbohydrates metabolic community, polymers metabolic community and carboxylic acids metabolic community respectively. Principal component analysis showed that the carbon metabolic characteristics of airborne microbial community in autumn were similar to those in winter but different from those in spring and summer. The characteristics of carbon metabolism revealed differences between summer and spring, autumn, or winter. These differences were mainly caused by amines or amides while the differences between spring and autumn or winter were mainly caused by carboxylic acids. Environmental factors, including changes in wind speed, temperature, and humidity acted to influence the carbon sources metabolic properties of airborne microbial community. The dominant environmental factors that acted to influence the carbon sources metabolic properties of airborne microbial community varied between different seasons.
authors.forename: Zhi-Wen
authors.initials: ZW
authors.lastname: Song
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.forename: Ai-Ling
authors.initials: AL
authors.lastname: Xu
authors.forename: Deng-Deng
authors.initials: DD
authors.lastname: Wu
authors.forename: Yan
authors.initials: Y
authors.lastname: Xia
mesh_terms: D000391:Air Microbiology; D002244:Carbon / Q000378:metabolism*; D004784:Environmental Monitoring; D012621:Seasons; D053833:Wetlands
chemical_list: D002244:Carbon