Li Zhuoying, Lu Jianjiang, Tong Yanbin, Li Shanman, He Feifei
School of Chemistry and Chemical Engineering, Shihezi University, Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Xinjiang 832003, China.
School of Chemistry and Chemical Engineering, Shihezi University, Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Xinjiang 832003, China.
Sci Total Environ. 2023 Mar 25;866:161275. doi: 10.1016/j.scitotenv.2022.161275. Epub 2022 Dec 30.
Environmental pollution has become an issue of increasing concern in China, owing to the country's rapid economic development. Atmospheric particulate matter (PM) is known to be an important parameter in air quality monitoring; further, bioaerosol forms a crucial component of PM. As the climatic environments in the north and south of Xinjiang, China, are significantly different, here, atmospheric PM samples collected from three cities, Shihezi, Yining, and Tumushuk, located in different directions, were analysed for a better understanding of the spatial distribution patterns of microbial community composition of Xinjiang. The16s rDNA and 18 s rDNA were used to locate bacteria and fungi in PM, PM, and total suspended particulate matter (TSP) at the species level and genus level, and the microbial communities with the top 15 abundances were selected for analysis. The reports indicate that the most abundant group in Shihezi and Yining was Cenchrus_americanus, which belongs to Proteobacteria. The remaining 14 dominant species had their own distribution pattern in each city. The most dominant strain in Tumushuk was Bacillus_taeanensis, but this strain was not detected in Yining and Shihezi. Similarly, the most predominant fungus in Tumushuk (Microdorylaimus_miser under Myriophyllum) was not detected in the other two cities. The analysis of the effect of environmental impact factors on bacteria and fungi revealed that the impact factors such as temperature, humidity, and wind speed had a greater effect on microorganisms, while O had a negative correlation with most microorganisms, owing to its toxicity. Overall, the results of this study show that short-range transported air masses have a greater impact on local pollutants and microorganisms.
由于中国经济的快速发展，环境污染已成为一个日益受到关注的问题。大气颗粒物（PM）是空气质量监测中的一个重要参数；此外，生物气溶胶是PM的一个关键组成部分。由于中国新疆南北的气候环境差异显著，为了更好地了解新疆微生物群落组成的空间分布模式，在此对从位于不同方向的石河子、伊宁和图木舒克三个城市采集的大气PM样本进行了分析。利用16s rDNA和18 s rDNA在物种水平和属水平上定位PM、PM和总悬浮颗粒物（TSP）中的细菌和真菌，并选择丰度排名前15的微生物群落进行分析。报告表明，石河子和伊宁中最丰富的类群是属于变形菌门的美洲蒺藜草。其余14个优势物种在每个城市都有自己的分布模式。图木舒克中最优势的菌株是塔埃纳芽孢杆菌，但在伊宁和石河子未检测到该菌株。同样，图木舒克中最主要的真菌（狐尾藻下的微小多室线虫）在其他两个城市未被检测到。对环境影响因素对细菌和真菌的影响分析表明，温度、湿度和风速等影响因素对微生物的影响较大，而由于其毒性，O与大多数微生物呈负相关。总体而言，本研究结果表明，短距离传输的气团对当地污染物和微生物有更大影响。
