benthic aquatic population 底栖水生种群
The water quality of Urumqi river was evaluated using biological index. Which is on the basis of analysis of the population structure of benthic animal in Urumqi river.
通过对乌鲁木齐河底栖动物种群结构的分析，利用生物指数评价乌鲁木齐河水质状况。
The biolocial population and distribution of benthic macro-invertebrates in Xuzhou region of Jinghang Great Canal have been ascertained bybioassay method.
本研究利用生物监测方法，探明了京杭运河徐州段大型底栖无脊椎动物的生物种群及其分布。
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