生物学杂志

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张掖国家湿地公园浮游植物群落结构特征

  

  1. 1. 河西学院 甘肃省微藻工程技术研究中心 河西走廊特色资源利用重点实验室, 张掖 734000;2. 甘肃省张掖市环境监测站, 张掖 734000
  • 出版日期:2017-12-18 发布日期:2017-12-18
  • 通讯作者: 罗光宏,硕士,教授,主要从事微藻资源开发与利用研究,E-mail:13993693452@163.com
  • 作者简介:杨宋琪,助教,主要从事藻类生理生态学方面研究,E-mail:sqyang@hxu.edu.cn
  • 基金资助:
    甘肃省高校协同创新科技团队支持计划(项目编号2017C-17);河西学院青年基金(QN2015-03);甘肃省科技支撑计划-社会发展类项目(1604FKC090)

Characteristics of phytoplankton community structure in Zhangye National Wetland Park

  1. 1. Gansu Engineering Technology Research Center for Microalgae, Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Hexi University, Zhangye 734000; 2. Environmental Monitor Station of Zhangye, Zhangye 734000, China
  • Online:2017-12-18 Published:2017-12-18

摘要: 为研究西北寒旱区张掖国家湿地公园浮游植物群落结构,于2014—2015年对湿地中的6个采样点进行了调查,并对水质状况进行评估。结果表明,共检出藻类8门91属257种(含变种)。浮游植物在春、夏、秋、冬四季平均密度分别为1.02×106、1.04×107、7.12×106和9.28×105 cells/L。各季节优势种演替明显,呈春冬季硅藻占优、夏秋季蓝、绿藻和隐藻占优的特点。多样性分析发现,Shannon-Weaver多样性指数为1.02~3.45,Margalef丰富度指数为2.35~4.18,Pielou均匀度指数为0.27~0.89。通过多样性和藻密度综合评价可知,张掖湿地公园夏季水质最差,呈中度污染,其他季节总体较好,为无污染或轻度污染。

关键词: 张掖国家湿地公园, 浮游藻类, 群落, 多样性, 水质

Abstract: The six stations of Zhangye National Wetland Park in drought and cold area were selected for surveying phytoplankton community structure and water environmental quality from 2014a to 2015a. The results showed that in the park there were 257 species belonging to 8 divisions, 91 genera and including variants. The average density of phytoplankton in the spring, summer, autumn and winter were 1.02×106, 1.04×107, 7.12×106 and 9.28×105 cells/L, respectively. The dominant species ecological succession was remarkable in each season. Bacillariophyta was dominated in spring and winter. However, blue-green algae was dominated in summer and autumn. The phytoplankton communities were varied with the Shannon-Weaver diversity index of 1.02-3.45, the Margalef richness index of 2.35-4.18 and Pielou evenness of 0.27-0.89, respectively. Through the comprehensive evaluation to diversity and density of algae, the water was moderately polluted in summer due to a large number of visitors to the park while the remaining seasons had high water quality.

Key words: Zhangye National Wetland Park, phytoplankton, community, diversity, water quality