南沙水道浮游植物群落结构特征研究
——以2023年秋季为例

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文章编号:1674-6139(2026)03-0117-06
关键词:南沙水道;浮游植物;细胞丰度;群落结构
中图分类号:X171.1文献标志码:B
Characteristics of Phytoplankton Community Structure in Nansha Waterway -A Case Sutdyin Autumnof2023
Zou Chujun,Li Zhen,Wei Jiafan,Zeng Zhouxiang,Li Zhenxing (Guangzhou,China National Analytical Center,Guangdong Academyof Sciences,Guangzhou ,China)
Abstract:InOctober2O2,aninvestigationwasconductedonthewaterenvironmentandphytoplanktoncommunityintheNansha Waterway.Teresultsshowedthat99phytoplanktonspecieslongingto59generaand6pylawereidentified,withdominantgoupsbe ingBacillroaloroandCanoptaonantsisesiltoriagaulataulacoeraaulatao tis ichthyoblabe.The phytoplankton cell abundance ranged from 115.42×103 to 2443.69×103 cells,with an average of (204号 1124.89×103 cell.The Nansha Waterway exhibitedlowspecies diversityandevenness indices,indicating thecommunity structure was simplfedThecomprehensivetroicsateindexrangedbetwen35and4,suggestingmesotropicwaterondtiosTotalirogn (TN),total phosphorus(TP),ammonia nitrogen( NH4-N) ,chlorophyll -a (Chl.a),dissolved oxygen(DO), pH ,transparency,and watertemperatureereidentifdaskeyfactorsifluencingyoplanktonabundanceAmongthesemmonianitrogenshowedteighst contribution rate (53.8% ).
Keywords:Nansha waterway;phytoplankton;cell abundance;species composition
前言
南沙水道是珠三角河口重要组成部分,有报道表明,珠三角海域是海域发生赤潮次数最多的地方,赤潮规模大、频次高[1],严重危害南沙区饮用水安全和经济活动的开展,因此对南沙水道进行针对性的生态环境调查尤为重要。(剩余6772字)