摘要
于2019年春、秋两季笔者分别对陵水湾近岸海域浮游植物的种类、群落结构、多样性指数和水质进行调查。结果表明:春、秋两季分别鉴定出浮游植物6门81种和3门53种,均以硅藻居多。春、秋两季优势种各不相同,但均为7种。春、秋两季浮游植物平均细胞密度分别为8.56×10^(3)个·m^(-3)和22.81×10^(3)个·m^(-3)。春季该海域浮游植物的多样性指数和均匀度平均值分别为2.99和0.76,秋季分别为3.03和0.79。冗余分析结果表明,陵水湾海域生态环境优良,春季浮游植物与盐度和亚硝酸盐氮呈显著正相关,秋季浮游植物与亚硝酸盐氮呈显著正相关,因此,影响陵水湾浮游植物的主要因素是盐度和亚硝酸盐氮含量。陵水湾浮游植物群落结构与水中营养盐密切相关,应加强控制陵水湾污水的排放,增强对陵水湾近岸海域环境的保护。
The species,community structure and diversity index of phytoplankton and seawater quality in the coastal waters of Lingshui Bay were investigated in the spring and autumn of 2019.The results showed that there were 81 species of phytoplankton in 6 phyla and 53 species in 3 phyla identified in spring and autumn,respectively,most of which were diatoms.There are 7 dominant species of phytoplankton although different in spring and autumn.The average cell density of phytoplankton in spring and autumn was 8.56×10^(3) cells·m^(−3) and 22.81×10^(3) cells·m^(−3),respectively.The average diversity index and uniformity of phytoplankton in the sea waters were 2.99 and 0.76 in spring,and 3.03 and 0.79 in autumn.Redundancy analysis(RDA)showed that the ecological environment in Lingshui Bay was excellent.The phytoplankton was significantly positively correlated with salinity and nitrite-nitrogen in spring,and with nitrite-nitrogen in autumn,indicating that the main factors affecting phytoplankton in Lingshui Bay are salinity and nitrite-nitrogen content.The phytoplankton community structure in Lingshui Bay was closely related to the nutrients in the sea water.The control of discharge of sewage in Lingshui Bay should be strengthened to enhance the protection of the coastal waters of Lingshui Bay.
作者
曾茹
李亚军
何金曼
黄晓晴
邓晓东
ZENG Ru;LI Yajun;HE Jinman;HUANG Xiaoqing;DENG Xiaodong(Institute of Tropical Bioscience and Biotechnology,Chinese Academy of Tropical Agricultural Sciences,Hainan Key Laboratory of Research and Utilization of Functional Components of Marine Biological Resources,Haikou,Hainan 571101,China)
出处
《热带生物学报》
2021年第2期167-175,共9页
Journal of Tropical Biology
基金
国家自然科学基金项目(31870344)
农业农村部财政专项(NFZX2021)
海南省重点科技计划(ZDYF2018124)
中国热带农业科学院基本科研业务费专项资金(1630052019012)。
关键词
陵水湾
浮游植物
群落结构
环境因子
冗余分析
Lingshui Bay
phytoplankton
community structure
environmental factor
redundancy analysis
