Nutrient dynamics in the East China Sea: Seasonal changes, budget, and ecological impacts

IF 3.8 3区 地球科学 Q1 OCEANOGRAPHY
Xiaosong Zhong , Jiaming Liu , Mengjiao Shi , Xiaotian Liu , Zongqing Lv , Xiangbin Ran
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引用次数: 0

Abstract

The continental seas have experienced significant eutrophication due to intensified anthropogenic activities. This study aims to elucidate the processes that govern the budgets of dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP), and dissolved silicate (DSi) in the East China Sea (ECS). Key nutrient sources include terrestrial runoff, atmospheric deposition, water column regeneration, and Kuroshio Current (KC) intrusions, jointly influencing the concentrations, distribution, and stoichiometry of nutrients in the ECS. Diffusion at the sediment–water interface contributes over 30% of DIN input, while the KC and the Taiwan Warm Current dominate inputs of DIP (69.1%) and DSi (66.3%), respectively. In contrast, riverine inputs, accounting for 12.3% of DIN and 4.73% of DIP, primarily affect nearshore surface waters and have minimal influence offshore. The distinct sources and cycling processes of DIN, DIP, and DSi lead to imbalanced nutrient stoichiometry in the ECS. This imbalance is further exacerbated by the disparity between nutrient regeneration and primary production. This study highlights the need for effective nutrient management to mitigate negative ecological consequences in the ECS.

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东海的营养动态:季节变化、预算和生态影响
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来源期刊
Progress in Oceanography
Progress in Oceanography 地学-海洋学
CiteScore
7.20
自引率
4.90%
发文量
138
审稿时长
3 months
期刊介绍: Progress in Oceanography publishes the longer, more comprehensive papers that most oceanographers feel are necessary, on occasion, to do justice to their work. Contributions are generally either a review of an aspect of oceanography or a treatise on an expanding oceanographic subject. The articles cover the entire spectrum of disciplines within the science of oceanography. Occasionally volumes are devoted to collections of papers and conference proceedings of exceptional interest. Essential reading for all oceanographers.
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