CAJ | 학술논문

为了解珠江流域西江支流贺江浮游藻类的分布并评价其水质情况，于2013年丰水期和枯水期对贺江的浮游藻类群落结构进行调查和分析，结果表明：调查期间共检出浮游藻类7门130种，其中丰水期7门63种，枯水期5门103种，浮游藻类群落组成以绿藻门、硅藻门和蓝藻门为主，丰水期绿藻门居多，硅藻门次之，藻细胞丰度平均值为2.13×106 cells/L；枯水期硅藻门最多，藻细胞丰度平均值为3.71×106 cells/L；优势种主要有水华微囊藻、卷曲鱼腥藻、小颤藻、啮蚀隐藻、短小舟形藻、变异直链藻、颗粒直链藻、四尾栅藻、集星藻、小球衣藻和小球藻. RDA分析表明，影响贺江浮游藻类群落分布的主要环境因子是氮、磷营养盐，综合营养状态指数显示贺江处于中营养水平.
위료해주강류역서강지류하강부유조류적분포병평개기수질정황，우2013년봉수기화고수기대하강적부유조류군락결구진행조사화분석，결과표명：조사기간공검출부유조류7문130충，기중봉수기7문63충，고수기5문103충，부유조류군락조성이록조문、규조문화람조문위주，봉수기록조문거다，규조문차지，조세포봉도평균치위2.13×106 cells/L；고수기규조문최다，조세포봉도평균치위3.71×106 cells/L；우세충주요유수화미낭조、권곡어성조、소전조、교식은조、단소주형조、변이직련조、과립직련조、사미책조、집성조、소구의조화소구조. RDA분석표명，영향하강부유조류군락분포적주요배경인자시담、린영양염，종합영양상태지수현시하강처우중영양수평.
To study the distribution of phytoplankton and evaluate water quality of Hejiang River, a branch of Xijiang River, Pearl River drainage basin, the community structure of phytoplankton was investigated and analyzed in wet and dry seasons in 2013. The results showed that a total of 130 species belonging to seven phyla of phytoplankton was identified. Including 63 species of seven phyla in wet season and 103 species of five phyla in dry season, phytoplankton community structure in Hejiang River was represen-ted by Chlorophyta, Bacillariophyta and Cyanophyta. Chlorophyta was dominant in wet season, followed by Bacillariophyta. The mean value of phytoplankton density was 2. 13 × 106 cells/L. Bacillariophyta dominated the phytoplankton in dry season, and the mean value of phytoplankton density was 3. 71 × 106 cells/L. The dominant species were Microcystis flos-aquae, Anabaena circina-lis, Oscillatoria tenuis, Cryptomonas erosa, Navicula exigua, Melosira varians, Melosira granulata, Scenedesmus quadricauda, Ac-tinastrum hantzschii, Chlamydomonas microsphaera and Chlorella valgaris. Based on RDA analysis, nitrogen and phosphorus were important environmental factors that affected the distribution of phytoplankton in Hejiang River. The river was classified as mesotro-phic according to comprehensive trophic state index.