| 南黄海物理-生物地球化学过程的时空异质性及内在关联和机制 |
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| 引用本文： | 韦钦胜,王保栋,傅明珠,孙俊川,姚庆祯,辛明,于志刚.南黄海物理-生物地球化学过程的时空异质性及内在关联和机制[J].海洋学报(英文版),2020,39(10):11-26. |
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| 作者姓名： | 韦钦胜 王保栋 傅明珠 孙俊川 姚庆祯 辛明 于志刚 |
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| 作者单位： | 自然资源部第一海洋研究所, 山东 青岛 266061;青岛海洋科学与技术试点国家实验室 海洋生态与环境科学功能实验室, 山东 青岛 266237;自然资源部第一海洋研究所, 山东 青岛 266061;青岛海洋科学与技术试点国家实验室 区域海洋动力学与数值模拟功能实验室, 山东 青岛 266237;青岛海洋科学与技术试点国家实验室 海洋生态与环境科学功能实验室, 山东 青岛 266237;中国海洋大学 深海圈层与地球系统前沿科学中心, 山东 青岛 266100 |
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| 摘 要： | 研究多重物理过程控制下陆架边缘海生物地球化学过程的时空异质性及其生态响应，对于深入认识海洋生态系统具有重要的意义。基于相关历史观测资料和卫星遥感海表温度，本文综合分析了南黄海物理-生物地球化学过程的时空变化和空间异质性特征，探讨了该海域内部典型地理单元之间的内在关联和机制。结果显示，冷季沿岸流南向输送和暖季锋面上升流垂向输运的季节性交替是影响石岛外海与海州湾外侧海域生物地球化学和初级生产的重要物理过程。夏季苏北沿岸水的东北向扩展可形成浒苔离岸/跨区域输送的动力驱动。暖季水体层化显著影响着南黄海中部冷水团海域的生物地球化学过程，春至秋季冷水团海域底层水体中的营养盐逐渐累积，形成了营养盐的重要贮库；层化季节黄海冷水团边界锋区上升流系统的存在使得南黄海叶绿素a和初级生产力高值区位置同海表低温涌升流区总体相一致。冷季南黄海西部南下的冷水与中部北向入侵的暖水共同导致了“S”型锋面的形成；暖季黄海冷水团边界锋区的上升流系统是连接层化海域和近岸区的纽带，可实现对冷水团内部营养盐的提取，从而将冷水团内部和边界区的生物地球化学过程形成有机连接，并在成山角-石岛外海、海州湾外侧、苏北浅滩东部形成三个典型的物理-生物地球化学相互作用区。本研究细化和整合了南黄海区域海洋学研究，揭示了该海域物理-生物地球化学过程的空间异质性特征和不同地理单元之间的关联性及机制，获得了对南黄海水文-生物地球化学-生态过程的综合、系统认知。
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| 关 键 词： | 物理-生物地球化学过程 上升流 锋面 黄海冷水团 南黄海 |
| 收稿时间： | 2019/8/28 0:00:00 |
Spatiotemporal variability of physical-biogeochemical processes and intrinsic correlations in the semi-enclosed South Yellow Sea |
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| Wei Qinsheng,Wang Baodong,Fu Mingzhu,Sun Junchuan,Yao Qingzhen,Xin Ming,Yu Zhigang.Spatiotemporal variability of physical-biogeochemical processes and intrinsic correlations in the semi-enclosed South Yellow Sea[J].Acta Oceanologica Sinica,2020,39(10):11-26. |
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| Authors: | Wei Qinsheng Wang Baodong Fu Mingzhu Sun Junchuan Yao Qingzhen Xin Ming Yu Zhigang |
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| Institution: | First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;Laboratory for Regional Oceanography and Numerical Modeling, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ministry of Education, Ocean University of China, Qingdao 266100, China;First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China |
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| Abstract: | Investigating the spatiotemporal variability of biogeochemical processes and ecological responses under multiple physical controls in shelf seas is of great importance for obtaining an in-depth understanding of marine ecosystem. Based on a compiled data set of historical observations and remote sensing data, the spatiotemporal variability and heterogeneity of physical-biogeochemical processes in the semi-enclosed South Yellow Sea (SYS) are investigated, and the intrinsic connectivity among different subregions and the associated mechanisms are examined. The results show that the seasonal alternation between southward transport in cold seasons and upwelling-induced vertical delivery in warm seasons is the primary physical control of the biogeochemical processes and primary production off Shidao and in the area adjacent to the Haizhou Bay. The northeastward expansion of coastal waters in the Subei Shoal constitutes an important physical driver for the offshore transport of Ulva prolifera in summer. Stratification significantly affects the biogeochemical processes in the Yellow Sea Cold Water Mass (YSCWM)-dominated area during warm seasons, and nutrients can accumulate in bottom waters from spring to autumn, making the Yellow Sea Cold Water Mass (YSCWM) be an important nutrient pool. Upwelling around the YSCWM boundary in the stratified season leads to consistency among the high chlorophyll a (Chl a) area, high primary productivity region and low-temperature upwelling zone. During cold seasons, the interactions of the southward cold waters in the western nearshore area and the northward warm waters in the central region lead to an “S”-shaped front in the SYS. In summer, upwelling can extract nutrients from the YSCWM; thus, the biogeochemical-ecological processes inside the cold-water mass and in the frontal zone are well connected via upwelling, and three typical physical-biogeochemical coupling regions are generated, namely, the Shidao coast, the area beyond the Haizhou Bay and the area off the Subei Shoal. This work refines and integrates studies on regional oceanography in the SYS and provides a comprehensive and systematic framework of physical-biogeochemical-ecological processes. |
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| Keywords: | physical-biogeochemical process upwelling front Yellow Sea Cold Water Mass South Yellow Sea |
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