| 鹤地水库不同生境浮游植物群落结构特征及其与环境因子的关系 |
| 摘要点击 1193 全文点击 291 投稿时间：2023-11-20 修订日期：2024-01-15 |
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| 中文关键词 鹤地水库 不同生境 浮游植物 群落结构 拉氏尖头藻 |
| 英文关键词 Hedi Reservoir different habitats phytoplankton community structure Raphidiopsis raciborskii |
| 作者 | 单位 | E-mail | | 孙瑞欣 | 沈阳建筑大学市政与环境工程学院, 沈阳 110168
生态环境部华南环境科学研究所, 广州 510535
国家环境保护水环境模拟与污染控制重点实验室, 广州 510530 | 304346185@qq.com | | 徐丽 | 沈阳建筑大学市政与环境工程学院, 沈阳 110168 | | | 梁荣昌 | 生态环境部华南环境科学研究所, 广州 510535
国家环境保护水环境模拟与污染控制重点实验室, 广州 510530 | | | 蔡启佳 | 生态环境部华南环境科学研究所, 广州 510535
国家环境保护水环境模拟与污染控制重点实验室, 广州 510530 | | | 马千里 | 生态环境部华南环境科学研究所, 广州 510535
国家环境保护水环境模拟与污染控制重点实验室, 广州 510530 | | | 耿征颜 | 沈阳建筑大学市政与环境工程学院, 沈阳 110168
生态环境部华南环境科学研究所, 广州 510535
国家环境保护水环境模拟与污染控制重点实验室, 广州 510530 | | | 林兴周 | 生态环境部华南环境科学研究所, 广州 510535
国家环境保护水环境模拟与污染控制重点实验室, 广州 510530 | | | 杨裕茵 | 生态环境部华南环境科学研究所, 广州 510535
国家环境保护水环境模拟与污染控制重点实验室, 广州 510530 | | | 姚玲爱 | 生态环境部华南环境科学研究所, 广州 510535
国家环境保护水环境模拟与污染控制重点实验室, 广州 510530 | yaolingai@scies.org | | 赵瑞 | 生态环境部华南环境科学研究所, 广州 510535
国家环境保护水环境模拟与污染控制重点实验室, 广州 510530 | zhaorui@scies.org |
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| 中文摘要 |
| 为探究鹤地水库不同生境浮游植物群落结构特征及其与环境因子之间的关系,于2022年2月（退水期）、4月（涨水期）、7月（涨水期）和12月（退水期）分别对鹤地水库入库河流、河口以及库区生境开展调查分析.调查期间,共鉴定出浮游植物种类7门231种,浮游植物细胞密度介于2.94×106 ~ 8.04×108 cells·L-1,涨水期高于退水期,河口和库区高于河流,且河口和库区浮游植物细胞密度全年均以蓝藻门为主,第一优势种均为蓝藻门的拉氏尖头藻；河流浮游植物细胞密度以蓝藻门、绿藻门和硅藻门为主,蓝藻门主要优势种为铜绿微囊藻、赖氏泽丝藻、链状伪鱼腥藻和点形平裂藻,绿藻门主要优势种为普通小球藻和四足十字藻,硅藻门主要优势种为链形小环藻和颗粒直链藻,河流生境生物多样性最为丰富.Pearson相关性分析结果表明,影响鹤地水库浮游植物群落结构特征的环境因子主要为水温、溶解氧、pH值、电导率和氮磷营养盐.冗余分析（RDA）结果表明,河流浮游植物群落主要受pH值和总氮影响,河口浮游植物群落主要受水温和pH值影响,库区浮游植物群落主要受浊度和pH值影响,其中pH值影响了3种不同生境的浮游植物群落结构. |
| 英文摘要 |
| To explore the characteristics of phytoplankton communities and their relationship with environmental factors in different habitats of Hedi Reservoir, the inflow rivers, estuaries, and reservoir area of Hedi Reservoir were investigated in February （recession period）, April （flood period）, July （flood period）, and December （recession period） of 2022. During the investigation, 231 species of phytoplankton that belong to seven phyla were identified, and the cell density of phytoplankton ranged from 2.94 × 106 - 8.04 × 108 cells·L-1. Phytoplankton cell density in flood periods were higher than that in recession periods, and that was higher in estuaries and the reservoir area than that in inflow rivers. Meanwhile, the cell density of phytoplankton in the estuarine and reservoir area was dominated by Cyanobacteria throughout the year, especially Raphidiopsis raciborskii, whereas the cell density of phytoplankton in inflow rivers was dominated by Cyanophyta, Chlorophyta, and Bacillariophyta. In the inflow river area, the dominant species of cyanobacteria were Microcystis aeruginosa, Limnothrix redekei, Pseudanabaena circinalis, and Merismopedia punctata； the dominant species of Chlorophyta were Chlorella vulgaris and Crucigenia tetrapedia； and the dominant species of Bacillariophyta were Chlorella vulgaris and Melosira granulate. The highest biodiversity （Shannon-Wiener Index, Pielou index, and Margalef index） were observed in the inflow river area of Hedi Reservoir. The correlation analysis （Pearson） indicated that the environmental factors that were significantly correlated to phytoplankton communities included water temperature, dissolved oxygen, pH, conductivity, nitrogen, and phosphorus concentration. The RDA analysis indicated that phytoplankton communities in the inflow river area were mainly affected by pH and total nitrogen concentration, which were majorly affected by water temperature and pH in the estuarine area and chiefly affected by turbidity and pH in the reservoir. The pH affected the changes in phytoplankton communities in all three different habitats, whereas the inflow river area was significantly affected by total nitrogen concentration, and the estuarine and reservoir were significantly affected by water temperature and turbidity, respectively. |
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