摘要
2006年6月16日和20日对长江口进行了叶绿素a浓度的现场周日监测。监测结果显示:叶绿素a浓度表层周日波动比中、底层明显,呈现出半日周期(～11h)的变化,高潮时浓度达到峰值,低潮时浓度出现谷值。叶绿素a浓度的周日变化主要与海域特定的水动力条件(如潮汐、再悬浮作用和温盐跃层)密切相关,与各环境因子(温度、盐度、浊度、总无机氮、磷酸盐和硅酸盐)的周日波动没有显著的相关关系。
Diel variation of chlorophyll a concentration in the Changjiang Estuary was monitored on June 16, and June 20, 2006, on board R/V Dong Fang Hong 2, respectively. Monitored results indicated that diel fluctuation of chlorophyll a concentration was more distinct in surface waters than that in middle or bottom waters, and showed a semidiurnal period of -11 h. The maximum of chlorophyll a concentration appeared at high tide, and the minimum at low tide. The diel variation of chlorophyll a concentration is mainly affected by tide, resuspension and stratification, and has no significant correlation with water temperature, salinity, turbidity, total inorganic nitrogen, phosphate and silicate.
出处
《海洋通报》
CAS
CSCD
北大核心
2008年第5期30-34,共5页
Marine Science Bulletin
基金
国家重点基础研究发展规划(973)项目(2002CB412405)
华东师范大学2007年优秀博士研究生培养基金
关键词
叶绿素A
潮汐
周日变化
长江口
chlorophyll a
tide
diel variation
Changjiang Estuary
