生物学杂志

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碧流河水库及其流域河流浮游植物的群落结构研究

  

  1. 1. 大连海洋大学 水产与生命学院 辽宁省水生生物学重点实验室, 大连 116023;
     2. 大连市碧流河水库管理局, 大连 116221
  • 出版日期:2016-06-18 发布日期:2016-06-18
  • 通讯作者: 赵文,教授,博士生导师,研究方向为水域生态学, E-mail: zhaowen@dlou.edu.cn
  • 作者简介:李媛,硕士研究生,主要从事水域生态学研究, E-mail: liyuan695@163.com
  • 基金资助:
    大连市环境保护局项目——碧流河水库生态安全调查与评估(2014051)

Study on the community structure of phytoplankton in  Biliuhe reservoir and rivers of river basin

  1. 1. Key Laboratory of Hydrobiology in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023; 2. China Management Bureau of Biliuhe Reservoir in Dalian City, Dalian 116221, China
  • Online:2016-06-18 Published:2016-06-18

摘要:

为评价碧流河水库污染状况和对未来发展提供指导依据,于2014年8月至2015年5月按季度采样研究碧流河水库及其流域河流理化因子、浮游植物种类组成、密度、生物量及物种多样性,结合典范对应分析(CCA)研究了它们之间的关系。结果表明:共发现浮游植物8门124属310种,其中蓝藻门17属35种,硅藻门26属86种,裸藻门9属20种,绿藻门59属148种,其它分别是甲藻门、金藻门、黄藻门及隐藻门。碧流河流域4个季度优势种种类多,且优势度不高。河流附着藻优势种为硅藻,库区优势种存在季节差异。碧流河浮游植物密度和生物量变化在0.28~1.23×107ind./L和1.41~5.50 mg/L之间,从数量上看,浮游植物密度5月最高,8月次之,之后是10月和1月。多样性指数和均匀度指数较好,群落结构较为稳定。CCA 分析表明TP、TN、DO、亚硝酸氮,氨氮与整个库区浮游植物密度、生物量、叶绿素a含量具有相关性。库区内整体营养状态处于中营养型,并与历史资料进行了比较,表明碧流河近年来水质状况趋于稳定,未有较大变化。

关键词: 碧流河水库, 河流, 附着藻, 群落结构, 典型对应分析

Abstract:

To evaluate Biliuhe reservoir pollution condition and provide guidance for the future development, physicochemical factors, abundance, biomass, species composition and biodiversity of phytoplankton were studied in Biliuhe from August 2014 to May 2015, combined with the result of CCA analyses. A total of 310 species, 124 genera 8 phyla were found in the survey area, including 17 genera and 35 species belonging to Cyanophyta, 86 species, and 26 genera belonging to Bacillariophyta, 20species and 9 genera belong to Euglenophyta, 59 genera and 148 species belonging to Chlorophyta, and others belonging to Pyrrophyta, Chrysopphyta, Xanthophyta and Cryptophyta. The taxon of dominant species was very more, but the dominance degree was very low. The dominant species of rivers and periphytic algae was mainly Bacillariophyta. There were seasonal differences in dominant species of reservoir. The phytoplankton had an abundance ranging from 0.28 and 1.23 107ind./L, and the biomass ranged from 1.41 and 5.50 mg/L. The maximum phytoplankton abundance occurred in May, and the next was in August and October, and the minimum occurred in January. Shannon-Wiener and Pielou indexes were better in general, and phytoplankton community structure was more stable. The results of CCA indicated that TP, TN, DO, NO2-N and NH3-N were related with the concentration of Chla, abundance and biomass of phytoplankton. The water of Biliuhe Reservoir was inmoderately eutrophic level. And compared with historical data, it showed that water quality tends to be stable and no obvious changes in recent years.