常熟城区空气细菌的分布及区系组成

The Distribution and Population Structure of Bacterium in Urbane Air of Changshu

为了调查常熟城区空气细菌的分布及区系组成 ,在常熟城区近地面空间 (1 5m～ 2 0m ) ,采用自然沉降法检测空气细菌数量并对细菌菌落进行初步鉴定。结果表明 ,不同功能区空气细菌数量有较大差异 ;细菌区系组成差异不大 ,分属于 9个属 ,其中优势菌为葡萄球菌属、微球菌属和芽孢杆菌属。指出 ,应增加城市绿化面积 ,适当降低人口密度 ,以减少空气细菌的数量。

With natural subsidence methods, the bacterium’s number and high level near ground (1.5 m～2.0 m) in urbane air of Changshu were researched to obtain the distribution and population structure of bacterium. The result showed that the difference of bacterium’s amount among various regions was little, also was the population. There were 9 species, the superior species was staphylococcus etc. It suggested to increase the area of green ground and to decrease the people density in order to decrease the amount of bacterium.