摘要
为了解淡水纤毛虫群落对河流水质变化的响应及将淡水纤毛虫群落特征作为评价水质的一个重要参数,于2013年2月至2014年1月,选取黑河干流流域作为研究区域,分不同季节采集水样对其纤毛虫群落组成和理化指标进行分析。结果表明:从上游地区到下游地区,水中总氮含量(TN)、化学需氧量(COD)、生物需氧量(BOD)和溶氧量(DO)差异显著,总磷含量TP与pH值相对稳定。水质条件的改变使得河流中纤毛虫群落多样性指数、丰富度指数与均匀度指数显著下降(P<0.05),而污生指数显著上升(P<0.05)。这表明纤毛虫群落的组成变化能够敏感地表征水质的变化情况。冗余分析显示,黑河干流纤毛虫群落的变化很好地响应了河流水质的变化情况,根据生物学指标,将黑河干流水质评价为轻度至中度污染,显示出生物学评价在河流水质评价方面存在相当的潜力。
The correlations between ciliate species diversity and community structure and water quality in the Heihe River basin were studied during the period of February 2013 to January 2014. Water samples were collected each season in order to analyze the ciliate community and physicochemical parameters. The results showed that total nitrogen content, chemical and biological oxygen demand, dissolved oxygen content significantly differed from upstream to downstream, while total phosphorus content and pH value had no obvious change. The change of water environment significantly decreased diversity index, richness index, and evenness index of ciliate community in the river, but the saprobic index increased significantly. These results indicated that the composition change of ciliate community can reflect the change of water quality. The redundancy analysis results suggested that the variation of ciliate communities was significantly correlated with the changes of water environmental conditions. Water quality was evaluated as mildly to moderately polluted by biological indicators. These findings suggest that ciliate community structure is a potentially reliable indicator of water quality in the Heihe River basin.
出处
《生态学杂志》
CAS
CSCD
北大核心
2017年第5期1350-1356,共7页
Chinese Journal of Ecology
基金
国家自然科学基金项目(41361055
40930533)资助
关键词
纤毛虫
生物学评价
理化指标
冗余分析
ciliate
biological assessment
physicochemical parameter
redundancy analysis.
