Articles | Volume 17, issue 10
https://doi.org/10.5194/bg-17-2701-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-2701-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 May 2020
Research article |
| 19 May 2020
| 19 May 2020
Quantifying the contributions of riverine vs. oceanic nitrogen to hypoxia in the East China Sea
Department of Oceanography, Dalhousie University, Halifax, NS, Canada
Department of Mathematics and Statistics, University of Strathclyde, Glasgow, UK
Katja Fennel
Department of Oceanography, Dalhousie University, Halifax, NS, Canada
Haiyan Zhang
Department of Oceanography, Dalhousie University, Halifax, NS, Canada
School of Marine Science and Technology, Tianjin University, Tianjin, China
Arnaud Laurent
Department of Oceanography, Dalhousie University, Halifax, NS, Canada
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Cited
23 citations as recorded by crossref.
- Relationships of the summer nutrient concentrations in the East China Sea with the Changjiang diluted water, upwellings and Kuroshio intrusion, from an interannual perspective Q. Zhang et al. https://doi.org/10.1016/j.marenvres.2026.107891
- Offline Fennel: a high-performance and computationally efficient biogeochemical model within the Regional Ocean Modeling System (ROMS) J. Crespin et al. https://doi.org/10.5194/gmd-18-5891-2025
- Nitrogen removal through denitrification in China's aquatic system H. Qi & Y. Liu https://doi.org/10.1016/j.scitotenv.2023.164317
- Mechanisms Controlling Interannual Variability of Seasonal Hypoxia Off the Changjiang River Estuary W. Zhang et al. https://doi.org/10.1029/2023JC019996
- Spatial variability of hypoxia and coupled physical-biogeochemical controls off the Changjiang (Yangtze River) Estuary in summer Q. Wei et al. https://doi.org/10.3389/fmars.2022.987368
- Nitrogen cycling in China marginal seas: Progress and challenges S. Wu et al. https://doi.org/10.1016/j.marchem.2024.104421
- Hypoxia formation in the East China Sea by decomposed organic matter in the Kuroshio Subsurface Water W. Wang et al. https://doi.org/10.1016/j.marpolbul.2022.113486
- Assessment of marine eutrophication: Challenges and solutions ahead L. Yao et al. https://doi.org/10.1016/j.marpolbul.2025.117977
- Stressing over the Complexities of Multiple Stressors in Marine and Estuarine Systems P. Glibert et al. https://doi.org/10.34133/2022/9787258
- Simulating the influence of various nutrient sources on hypoxia off the Changjiang River Estuary J. Zheng et al. https://doi.org/10.1007/s13131-021-1906-z
- A synthesis of ecosystem metabolism of China's major rivers and coastal zones (2000–2020) M. Zhang et al. https://doi.org/10.1002/wat2.1628
- A numerical model study of the main factors contributing to hypoxia and its interannual and short-term variability in the East China Sea H. Zhang et al. https://doi.org/10.5194/bg-17-5745-2020
- Role of phosphorus in the seasonal deoxygenation of the East China Sea shelf A. Laurent et al. https://doi.org/10.5194/bg-19-5893-2022
- Budget of riverine nitrogen over the East China Sea shelf J. Zhang et al. https://doi.org/10.1016/j.envpol.2021.117915
- Regional projection of climate warming effects on coastal seas in east China W. Zhang et al. https://doi.org/10.1088/1748-9326/ac7344
- Tracing the sources of nutrients through the Tsushima/Korea Strait J. Zhang et al. https://doi.org/10.1007/s13131-024-2372-1
- Changjiang and Kuroshio contributions to oxygen depletion on the Zhejiang Coast H. Wu et al. https://doi.org/10.3389/fmars.2023.1285426
- Persistent eutrophication and hypoxia in the coastal ocean M. Dai et al. https://doi.org/10.1017/cft.2023.7
- Impacts and uncertainties of climate-induced changes in watershed inputs on estuarine hypoxia K. Hinson et al. https://doi.org/10.5194/bg-20-1937-2023
- 河流冲淡水与上升流耦合对珠江口生物地球化学过程的影响 燕. 汪 et al. https://doi.org/10.1360/N072025-0249
- The Globalization of Cultural Eutrophication in the Coastal Ocean: Causes and Consequences T. Malone & A. Newton https://doi.org/10.3389/fmars.2020.00670
- Effects of dissolved oxygen and nutrients from the Kuroshio on hypoxia off the Changjiang River estuary D. Tian et al. https://doi.org/10.1007/s00343-021-0440-3
- Coastal Upwelling Combined With the River Plume Regulates Hypoxia in the Changjiang Estuary and Adjacent Inner East China Sea Shelf Q. Wei et al. https://doi.org/10.1029/2021JC017740
23 citations as recorded by crossref.
- Relationships of the summer nutrient concentrations in the East China Sea with the Changjiang diluted water, upwellings and Kuroshio intrusion, from an interannual perspective Q. Zhang et al. https://doi.org/10.1016/j.marenvres.2026.107891
- Offline Fennel: a high-performance and computationally efficient biogeochemical model within the Regional Ocean Modeling System (ROMS) J. Crespin et al. https://doi.org/10.5194/gmd-18-5891-2025
- Nitrogen removal through denitrification in China's aquatic system H. Qi & Y. Liu https://doi.org/10.1016/j.scitotenv.2023.164317
- Mechanisms Controlling Interannual Variability of Seasonal Hypoxia Off the Changjiang River Estuary W. Zhang et al. https://doi.org/10.1029/2023JC019996
- Spatial variability of hypoxia and coupled physical-biogeochemical controls off the Changjiang (Yangtze River) Estuary in summer Q. Wei et al. https://doi.org/10.3389/fmars.2022.987368
- Nitrogen cycling in China marginal seas: Progress and challenges S. Wu et al. https://doi.org/10.1016/j.marchem.2024.104421
- Hypoxia formation in the East China Sea by decomposed organic matter in the Kuroshio Subsurface Water W. Wang et al. https://doi.org/10.1016/j.marpolbul.2022.113486
- Assessment of marine eutrophication: Challenges and solutions ahead L. Yao et al. https://doi.org/10.1016/j.marpolbul.2025.117977
- Stressing over the Complexities of Multiple Stressors in Marine and Estuarine Systems P. Glibert et al. https://doi.org/10.34133/2022/9787258
- Simulating the influence of various nutrient sources on hypoxia off the Changjiang River Estuary J. Zheng et al. https://doi.org/10.1007/s13131-021-1906-z
- A synthesis of ecosystem metabolism of China's major rivers and coastal zones (2000–2020) M. Zhang et al. https://doi.org/10.1002/wat2.1628
- A numerical model study of the main factors contributing to hypoxia and its interannual and short-term variability in the East China Sea H. Zhang et al. https://doi.org/10.5194/bg-17-5745-2020
- Role of phosphorus in the seasonal deoxygenation of the East China Sea shelf A. Laurent et al. https://doi.org/10.5194/bg-19-5893-2022
- Budget of riverine nitrogen over the East China Sea shelf J. Zhang et al. https://doi.org/10.1016/j.envpol.2021.117915
- Regional projection of climate warming effects on coastal seas in east China W. Zhang et al. https://doi.org/10.1088/1748-9326/ac7344
- Tracing the sources of nutrients through the Tsushima/Korea Strait J. Zhang et al. https://doi.org/10.1007/s13131-024-2372-1
- Changjiang and Kuroshio contributions to oxygen depletion on the Zhejiang Coast H. Wu et al. https://doi.org/10.3389/fmars.2023.1285426
- Persistent eutrophication and hypoxia in the coastal ocean M. Dai et al. https://doi.org/10.1017/cft.2023.7
- Impacts and uncertainties of climate-induced changes in watershed inputs on estuarine hypoxia K. Hinson et al. https://doi.org/10.5194/bg-20-1937-2023
- 河流冲淡水与上升流耦合对珠江口生物地球化学过程的影响 燕. 汪 et al. https://doi.org/10.1360/N072025-0249
- The Globalization of Cultural Eutrophication in the Coastal Ocean: Causes and Consequences T. Malone & A. Newton https://doi.org/10.3389/fmars.2020.00670
- Effects of dissolved oxygen and nutrients from the Kuroshio on hypoxia off the Changjiang River estuary D. Tian et al. https://doi.org/10.1007/s00343-021-0440-3
- Coastal Upwelling Combined With the River Plume Regulates Hypoxia in the Changjiang Estuary and Adjacent Inner East China Sea Shelf Q. Wei et al. https://doi.org/10.1029/2021JC017740
Saved (final revised paper)
Latest update: 28 May 2026
Short summary
In the East China Sea, hypoxia occurs frequently from spring to fall due to high primary production and subsequent decomposition of organic matter. Nitrogen inputs from the Changjiang and the open ocean have been suggested to contribute to hypoxia formation. We used a numerical modelling approach to quantify the relative contributions of these nitrogen sources. We found that the Changjiang dominates, which suggests that nitrogen management in the watershed would improve oxygen conditions.
In the East China Sea, hypoxia occurs frequently from spring to fall due to high primary...
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