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王晓琦,邢小罡,王金平,李娜.基于遥感数据分析南海叶绿素与颗粒物的季节变化与相互关系[J].海洋学报,2015,37(10):26-38
基于遥感数据分析南海叶绿素与颗粒物的季节变化与相互关系
A satellite-based analysis on the seasonal variations and inter-relationships between chlorophyll and particle in the South China Sea
投稿时间:2015-02-03  
DOI:10.3969/j.issn.0253-4193.2015.10.003
中文关键词:  叶绿素a浓度  颗粒物后向散射系数  南海  季节尺度  光驯化
英文关键词:chlorophyll a concentration  particle backscattering coefficient  South China Sea  seasonal scale  photoacclimation
基金项目:国家基础科学人才培养基金(J1103402,J1310013)。
作者单位E-mail
王晓琦 中国海洋大学 海洋环境学院, 山东 青岛 266100  
邢小罡 中国海洋大学 海洋环境学院, 山东 青岛 266100 xing@ouc.edu.cn 
王金平 中国海洋大学 海洋环境学院, 山东 青岛 266100  
李娜 中国海洋大学 海洋环境学院, 山东 青岛 266100  
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中文摘要:
      本文基于卫星遥感的叶绿素a浓度与颗粒物后向散射系数月平均数据以及其他海洋与气象参数,详细分析了两个生物光学参量在季节尺度上的相关性及其与物理参数的耦合关系,并运用光驯化模型分析了南海表层水体浮游植物的生理学季节变化特征。结果表明,受南海地形和风场等物理参量的变化,南海叶绿素a浓度与颗粒物后向散射系数存在显著的季节和空间分布特征,具有一定的共变性和差异性。在南海近岸及浅水区,叶绿素a浓度与颗粒物后向散射系数有很好的耦合关系;而在南海深水海盆区,叶绿素a浓度冬高夏低,其季节循环过程与颗粒物后向散射系数相反,这主要是受浮游植物生理学过程的影响。"生物量控制区"与"光驯化控制区"的分界在南海与陆架-海盆分界线一致,体现了水深条件对浮游植物生理状态的影响。此外本文还发现,在吕宋海峡西部海区,叶绿素a与颗粒物后向散射系数的关系表现出"生物量-光驯化共同控制"的特点。
英文摘要:
      On the basis of satellite remotely sensed monthly chlorophyll a concentration and particle backscattering coefficient,as well as other oceanographic and meteorological parameters,this study analyzed on the correlation coefficients between concentration of chlorophyll a and particulate backscattering on seasonal scale and their coupling relationships with physical parameters in the South China Sea. In addition,a phytoplankton photoacclimation model was utilized to identify the physiological characteristics. The results showed that,due to the influences of specific topography,wind forcing and other physical parameters,both consistency and discrepancy between the seasonal cycles of chlorophyll a and particle backscattering coefficient were found in the South China Sea. In coastal and shallow waters,two properties were strongly coupled; while in the central deep-water basin,chlorophyll a was higher in winter and lower in summer,totally differing from the seasonal evolution of particles,such phenomenon was mainly owing to phytoplankton physiological process. The boundary of "biomass regime" and "photoacclimation regime" in the South China Sea located at the shelf-basin interface,suggesting the influence of water depth on the phytoplankton physiological status. Furthermore,a characteristics of "biomass-photoacclimation joint controlling" was found in the west of Luzon Strait.
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