首页 | 本学科首页   官方微博 | 高级检索  
     检索      

调水调沙后黄河口邻近海域浮游植物群落响应特征
引用本文:苏芝娟,王玉珏,董志军,张义文,刘东艳,王艳霞.调水调沙后黄河口邻近海域浮游植物群落响应特征[J].海洋学报,2015,37(4):62-75.
作者姓名:苏芝娟  王玉珏  董志军  张义文  刘东艳  王艳霞
作者单位:1.河北师范大学 资源与环境科学学院 河北省环境演变与生态建设省级重点实验室, 河北 石家庄 050024;中国科学院烟台海岸带研究所 中国科学院和山东省海岸带环境过程重点实验室, 山东 烟台 264003
基金项目:中国科学院战略先导研究项目(XDA11020405);中国科学院重点部署项目(KZZD-EW-14);河北省科学院科技计划项目(13128);中国科学院院地合作项目——"河北省海岸带受损生态系统评估及修复技术研究".
摘    要:为研究黄河调水调沙对邻近海域浮游植物群落的影响,2013年7月在黄河第16次调水调沙事件后,开展了水文、化学与生物综合调查。研究结果表明,黄河口邻近海域温度、营养盐浓度整体呈现由河口向离岸区域逐渐递减的分布趋势,盐度呈现由河口向离岸区域逐渐递增的分布趋势,显示了黄河水输入的影响程度。叶绿素a与营养盐浓度在空间分布上呈现出较好的对应关系,在黄河口偏渤海湾侧明显高于偏莱州湾侧,且近河口区明显高于离岸区。营养盐结构分析表明,黄河口邻近海域普遍存在磷酸盐(DIP)的绝对和相对限制;但黄河水沙输入在局部站位缓解了硅(DSi)限制。浮游植物群落结构的空间变化显著受到盐度的影响,在受黄河水输入影响显著的C、D、E断面,蓝藻与绿藻的生物量比例明显增高;影响相对较弱的断面则以硅藻、甲藻为主。浮游植物群落结构与环境因子的主成分分析结果表明,DSi、DIP和盐度是影响该海域浮游植物空间变化的关键环境因子。甲藻、蓝藻与绿藻群落受盐度变化的影响程度明显大于硅藻群落;但甲藻群落对营养盐结构的敏感性低于硅藻、蓝藻和绿藻群落。

关 键 词:黄河口    浮游植物    调水调沙    盐度    营养盐
收稿时间:2014/9/18 0:00:00
修稿时间:2014/12/26 0:00:00

Response of phytoplankton assemblages to the water-sediment regulation in the adjacent sea of the Yellow River mouth
Su Zhijuan,Wang Yujue,Dong Zhijun,Zhang Yiwen,Liu Dongyan and Wang Yanxia.Response of phytoplankton assemblages to the water-sediment regulation in the adjacent sea of the Yellow River mouth[J].Acta Oceanologica Sinica (in Chinese),2015,37(4):62-75.
Authors:Su Zhijuan  Wang Yujue  Dong Zhijun  Zhang Yiwen  Liu Dongyan and Wang Yanxia
Institution:Hebei Key Laboratory of Environmental Evolution and Ecological Construction, College of Resources and Environment Science, Hebei Normal University, Shijiazhuang 050024, China;Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China,Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China,Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China,Hebei Key Laboratory of Environmental Evolution and Ecological Construction, College of Resources and Environment Science, Hebei Normal University, Shijiazhuang 050024, China,Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China and Institute of Geographical Science, Hebei Academy of Science, Shijiazhuang 050021, China
Abstract:An ecological survey was carried out in July 2013 in the Yellow River adjacent sea after the 16th water-sediment regulation,with an aim of understanding the response of phytoplankton assemblages to changed environment. The result showed that temperature and nutrient concentrations decreased gradually from the mouth of river to offshore waters,corresponding to the increased freshwater loading,and salinity increased gradually from the mouth of river to offshore waters. Nutrient concentrations at the sites near to the side of Bohai Bay displayed higher values than the Laizhou Bay. The analysis on nutrient structure indicated that DIP was absolute and relative limitation,while DSi limitation only appeared in a few sites. 100 species of phytoplankton in 60 genera of the five classes were identified from the samples,and major phytoplankton components were diatoms and dinoflagellates. In addition,a few brackish species in Cyanophyceae,Chrysophyceae,and Chlorophyceae were also identified from the river mouth,indicating the impact of salinity. Chlorophyll a concentrations and nutrient concentrations presented a significantly spatial distribution from the river mouth to offshore waters,with higher values at the sites near to the side of the Bohai Bay than the Laizhou Bay. Phytoplankton assemblages were in response to the variations of spatial environmental factors. The biomass proportions of Cyanophyceae and Chlorophyceae increased distinctly in the transections of C,D and E,indicating a strong influence of the diluted water,while diatoms and dinoflagellates in other transections with less impact from the diluted water. The results of Principal Components Analysis between phytoplankton assemblages and environmental factors indicated that DSi,DIP and salinity were key factors related to the spatial variation of phytoplankton assemblages.
Keywords:Yellow River mouth  phytoplankton  water-sediment regulation  salinity  nutrients
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《海洋学报》浏览原始摘要信息
点击此处可从《海洋学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号