大清河浮游动物的群落特征研究
Community Characteristics of Zooplankton in Daqing River Basin
投稿时间:2019-11-22  修订日期:2020-02-23
中文关键词:大清河水系;浮游动物;多样性分析  群落特征
英文关键词:Daqing River basin  zooplankton  diversity analysis  community characteristics
基金项目:国家自然科学基金(31672264)
作者单位
陈佳林 天津农学院水产学院天津市水生生态及养殖重点实验室天津 300384 
余海军 天津农学院水产学院天津市水生生态及养殖重点实验室天津 300384 
王茜 天津农学院水产学院天津市水生生态及养殖重点实验室天津 300384 
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中文摘要:
      研究浮游动物群落特征,评价水质状况,为大清河的生态系统修复提供科学依据。2018 年5 月和8 月,在大清河25个采样点采集浮游动物样品,分析种类组成、密度以及优势种,利用多样性等指数和聚类分析的方法,其浮游动物的等群落特征。结果表明大清河水体中共有浮游动物18 属28 种,其中种数最多的为轮虫16 种,占总种数的57.14 %;最少的为桡足类4 种,占14.29 %;2次调查浮游动物平均密度分别为643.08个/L(5 月)和715.20 个/L(8 月);优势种为前节晶囊轮虫(Asplanchna priodonta)、壶状臂尾轮虫(Brachionus urceus)、萼花臂尾轮虫(Brachionus calyciflorus)、针簇多肢轮虫(Polyarthra trigla)、直额裸腹溞(Moina rectirostris)、近邻剑水蚤(Cyclops vicinus)等。利用Shannon-Wiener指数、Pielou指数、Margalef指数和优势度指数计算大清河浮游动物多样性指数,结果表明大清河浮游动物多样性较差,综合评价其水质为中重度污染。聚类分析将大清河2个月25 个站点分别聚为9和7 个类群。
英文摘要:
      Daqing River flows across four provinces and the cities of Shanxi, Hebei, Beijing and Tianjin. With a surface area of 45,131 km2, the river plays an important role in maintaining the ecological balance and climate regulation of northern China. In this study, we characterized the zooplankton community of Daqing River and evaluated the water quality based on the results. The objective was to provide a scientific basis for restoring the Daqing River ecosystem. Zooplankton investigations were carried out in May and August of 2018 at 25 sampling sites in the Daqing River basin, focusing on species composition, density, dominant species and community diversity. A total of 28 zooplankton species belonging to 18 genera were detected, with absolute dominance by rotifera (16 species, 10 genera, 57.14 % of the total species), followed by cladocera (6 species, 5 genera, 21.43 %) and copepoda (4 species, 3 genera,14.29%). There was not a significant difference in the average density of zooplankton between May (643.08 ind/L) and August (715.20 ind/L). Nine species were dominant during both investigations, with the dominant species in the order, rotifera>cladocera>copepoda, while the dominance degree was in the order, copepoda>rotifera>cladocera. The dominant species included Asplanvhna priodonta,Brachionus urceus,Brachionus calyciflorus, Polyarthra trigla, Moina rectirostris, Cyclops vicinus. The Shannon-Wiener diversity, Pielou evenness and Margalef richness indices of the zooplankton community in the Daqing River Basin were in the respective ranges of 0.35-1.83, 0.09-0.32, 0.30-1.39 in May and 0.23-2.18, 0.03-0.34, 0.12-1.44 in August. Water quality evaluation, based on community diversity, indicated that 2% of the sites were lightly polluted, 36% were moderately polluted and 62% were heavily polluted. To summarize, the pollution level in the Daqing River basin was at a medium to heavy level in 2018.
陈佳林,余海军,王茜.2021.大清河浮游动物的群落特征研究[J].水生态学杂志,42(3):72-78.
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