Fang Zhi-guo, Ouyang Zhi-yun, Zhao Jing-zhu, Wang Xiao-ke, Zheng Hua
Ky Laboratory of Systems Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Wei Sheng Wu Xue Bao. 2006 Aug;46(4):618-23.
Airborne bacteria are important biological components of the aerosol. They have a close relation with human health. The much higher concentrations can result in kinds of microbial disease. Using BIOLOG identification technology, the study on the community structure and dynamics of airborne bacteria was carried out in three typical functional areas in Beijing by systemic site sampling. Results show that the gram positive bacteria contributing 80%-85% were much more than the gram negative bacteria. Amongst 47 genera of bacteria including 31 Gram positive bacteria and 16 Gram negative bacteria, Micrococcus, Staphylococcus, Bacillus, Corynebacterium, and Pseudomonas were dominant, and Micrococcus contributing 20%-30% was the most dominant genus. The concentration of airborne bacteria was significant lower in GGR than in CER and MTL. In a year, the bacterial concentrations of summer and autumn were much more than those of winter and spring in CER and MTL, and there were no significant variations of bacterial concentrations in GGR. In different periods, the lower concentration of airborne bacteria was exhibited at 13:00.
空气传播细菌是气溶胶的重要生物组成部分。它们与人类健康密切相关。较高的浓度可能导致各种微生物疾病。采用BIOLOG鉴定技术，通过系统的现场采样，对北京三个典型功能区的空气传播细菌群落结构和动态进行了研究。结果表明，占比80%-85%的革兰氏阳性菌远多于革兰氏阴性菌。在包括31种革兰氏阳性菌和16种革兰氏阴性菌的47个细菌属中，微球菌属、葡萄球菌属、芽孢杆菌属、棒状杆菌属和假单胞菌属占主导地位，其中占比20%-30%的微球菌属是最主要的属。城市绿化隔离地区（GGR）的空气传播细菌浓度显著低于商务中心区（CER）和金融街地区（MTL）。在一年中，商务中心区和金融街地区夏季和秋季的细菌浓度远高于冬季和春季，而城市绿化隔离地区的细菌浓度没有显著变化。在不同时间段，空气传播细菌浓度在13:00时较低。
