华东师范大学学报(自然科学版) ›› 2019, Vol. 2019 ›› Issue (6): 153-168.doi: 10.3969/j.issn.1000-5641.2019.06.015

• 河口海岸学 • 上一篇    下一篇

东海中部浮游生态系统季节变化的数值模拟

陈建忠1, 葛建忠1, BELLERBY Richard1,2   

  1. 1. 华东师范大学 河口海岸学国家重点实验室, 上海 200062;
    2. 挪威水资源研究所, 卑尔根 N-5006, 挪威
  • 收稿日期:2018-09-06 出版日期:2019-11-25 发布日期:2019-11-26
  • 通讯作者: 葛建忠,男,副研究员,硕士生导师,研究方向为海洋环境动力学数值模拟.E-mail:jzge@sklec.ecnu.edu.cn. E-mail:jzge@sklec.ecnu.edu.cn
  • 作者简介:陈建忠,男,硕士研究生,研究方向为海洋数值模拟.E-mail:chenjianzhong1003@outlook.com.
  • 基金资助:
    国家重点研发计划(2016YFA0600903);国家自然科学基金(41776104,41476076)

Numerical simulation of pelagic ecosystem's seasonal variation in the central East China Sea

CHEN Jian-zhong1, GE Jian-zhong1, BELLERBY Richard1,2   

  1. 1. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China;
    2. Norwegian Institute for Water Research, Bergen N-5006, Norway
  • Received:2018-09-06 Online:2019-11-25 Published:2019-11-26

摘要: 利用一维物理-生物耦合模型(GOTM-FABM-ERSEM)对东中国海中部站位浮游生态系统要素的季节变化进行模拟,较好地刻画并分析了其物理、生化要素之间的相互作用.模拟结果表明浮游生态系统的季节性变化的物理控制因子主要为光照、温度及其引起的垂向层化;生化控制因子主要为营养盐水平,其夏季集中分布在跃层以下深度,并在9月达到最大值.模型较好地呈现了春秋季浮游植物的双峰结构,浮游植物在夏季次表层(约20m)出现最大值,并在潮汐混合影响下呈周期性斑块状生长,峰值为5.3 mg ·m-3.浮游动物和细菌的分布与浮游植物类似,均在春季达到最大值,并滞后3d左右,细菌在夏季表层受浮游植物和温度影响.

关键词: 东海, 海洋数值模拟, 浮游生态系统, 季节变化

Abstract: The 1D physics-ecological system model GOTM-FABM-ERSEM is used to simulate the seasonal variation in pelagic ecosystem components in the central East China Sea. The interaction between physical and bio-chemical components is well characterized. The biophysical drivers of seasonality are light, temperature, vertical stratification, and nutrient concentrations as well as their respective rates of supply. There are two blooming periods for phytoplankton:these are April and October. In summer, the seawater temperature is the highest and stratification is the strongest, with high nutrient concentrations found below the thermocline; these concentrations reach a maximum in September with phytoplankton biomass reaching a maximum of 5.3 mg C·m-3 in the subsurface layer (about 20 m depth) and periodic growth promoted by tidal mixing. The temporal variability of zooplankton and bacteria is tightly coupled with that of phytoplankton, but with a 3 d lag in spring blooming; hence, the zooplankton and bacteria reach maximum concentrations after the spring phytoplankton bloom. Bacterial biomass in the upper layer is controlled by phytoplankton standing stock and temperatures during the summer.

Key words: East China Sea, marine modelling, pelagic ecosystems, seasonal variability

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