| 青龙湖冬季浮游植物群落结构及其与环境因子的关系 |
| Winter Phytoplankton Community Structure and Its Relationships with Environmental Factors in Qinglong Lake, Anhui Province |
| 投稿时间：2018-05-09 修订日期：2020-04-22 |
| DOI：10.15928/j.1674-3075.2020.02.012 |
| 中文关键词:青龙湖 浮游植物 群落结构 水质评价 环境因子 |
| 英文关键词:Qinglong Lake phytoplankton community structure water quality evaluation environmental factor |
| 基金项目:国家特色淡水鱼产业技术体系(CARS-46)；安徽省重点研发和开发计划项目（201904f06020053）；安徽省农业科学院科技创新团队（2019YL029） |
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| 中文摘要: |
| 为探究青龙湖浮游植物群落结构特征及其水环境影响因子，确定水体营养化现状，于2016年12（冬季）对青龙湖10个采样点浮游植物种类组成、丰度与生物量以及水质理化指标进行调查分析。结果显示，冬季青龙湖共鉴定出浮游植物5门、17属、50种（含变种），硅藻和绿藻类群在青龙湖浮游植物种类中为优势地位，浮游植物种类组成表现为硅藻-绿藻型；优势类群为硅藻门颗粒直链藻(Melosira granulata)、颗粒直链藻极狭变种(Melosira granulata var. angustissima)、颗粒直链藻极狭变种螺旋变型(Melosira granulata var. angustissima f. spiralis)及蓝藻门类颤鱼腥藻(Anabaena oscillarioides)、水华束丝藻(Aphanizomenon flos-aquae)，优势种在各采样点分布差异不明显。冬季浮游植物丰度为6.71×104 个/L，生物量为0.07 mg/L；各采样点Margalef指数、Shannon-Wiener指数与Pielou指数分别为0.98~2.31、0.61~2.37及0.19~0.84。冗余分析（RDA）表明，pH、溶解氧、溶解氧饱和度、水温与氧化还原电位与青龙湖浮游植物群落结构关系最为密切。Margalef丰富度指数、Shannon-Wiener多样性指数与Pielou均匀度指数评价水质结果为中度污型水平。 |
| 英文摘要: |
| Reservoirs and lakes provide a source of drinking water for many cities and their water quality has received much public attention. In this study, we studied the community structure of phytoplankton and its relationships with environmental factors in Qinglong Lake. The objectives were to provide data to support water management and evaluation, and the rational utilization and sustainable development of the fishery resource in Qinglong Lake. Investigation of the phytoplankton community and related environmental factors was carried out at 10 sampling sites during the winter of 2016, focusing on the phytoplankton species composition, abundance, biomass and related environmental factors, including dissolved oxygen (DO) and dissolved oxygen saturation (DOs), pH, water temperature (WT) and oxidation-reduction potential (ORP). A total of 50 phytoplankton species were identified (including varieties), belonging to 17 genera and 5 phyla. The phytoplankton community was dominated by Bacillariophyta and Chlorophyta, and displayed the Bacillariophyta-Chlorophyta type in winter. The dominant species of Bacillariophyta were Melosira granulate, Melosira granulata var. angustissima, Melosira granulata var. angustissima f. spiralis, and the dominant species of Chlorophyta were Anabaena oscillarioides and Aphanizomenon flos-aquae. There was no obvious difference in dominant species among sampling sites. The average winter phytoplankton abundance and biomass were 6.71×104 cells/L and 0.07 mg/L. The Margalef richness, Shannon-Wiener diversity and Pielou evenness indices of the phytoplankton community were, respectively, 0.98-2.31, 0.61-2.37 and 0.19-0.84. Redundancy analysis shows that DO, DOs, WT, pH and ORP all correlated strongly with phytoplankton community structure. Based on the evaluation of Margalef, Shannon-Wiener and Pielou indices, water quality in Qinglong Lake was moderately polluted during the winter. |
| 赵秀侠,杨 坤,方 婷,李 静,梁阳阳,卢文轩.2020.青龙湖冬季浮游植物群落结构及其与环境因子的关系[J].水生态学杂志,41(2):83-90. |
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