上海市内不同水质的河道春季浮游细菌群落结构分析

2008年4月采集上海市城郊结合地区的4条河道午潮港、横港、朝阳河和曹杨环浜的水样, 测定水样的相关理化数据, 计算水环境质量综合指数; 提取水样中浮游细菌的总DNA, 进行变性梯度凝胶电泳(DGGE)分析; 并对水体中的可培养浮游细菌的数量进行测定。结果表明, 污染严重的河道浮游细菌的生物量较高, 而多样性明显偏低, 河道不同采样点的微环境影响浮游细菌的组成, 河道中浮游细菌的组成与生物量的变化与水环境质量密切相关。

Bacterial Community Structure in Four Different Rivers of Shanghai in Spring

In April of 2008 water samples were collected from four different rivers, which were Wuchao gang River, Henggang River, Chaoyang River and Caoyanghuanbang River. During the sampling the physical and chemical parameters were measured. The abundance and the diversity of the bacteria of these four rivers were studied. The results showed that the population level increased in the more severely polluted river while the bacterial diversity decreased; the bacterial community structure was also affected by the different ecological conditions of each sampling spot. The bacterial composition and abundance was closely related to the water quality in the river.