Groundwater-Derived Carbon Promotes Hypoxia and Acidification in a Large Tropical Estuary
文献类型：期刊论文
| 作者 | Wang, Zhenyan7,8,9,10; Zhang, Yan9,10; Santos, Isaac R.6; Robinson, Clare E.5; Wang, Xuejing4; Xiao, Kai7; Zhang, Xiaolang3; Wang, Wei8; Liu, Zhaoxi8; Li, Hailong1,2,8 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2026-03-10 |
| 卷号 | 131期号:3页码:20 |
| 关键词 | submarine groundwater discharge carbon cycles seawater acidification hypoxia dissolved carbon budgets |
| ISSN号 | 2169-8953 |
| DOI | 10.1029/2025JG009366 |
| 通讯作者 | Zhang, Yan(yanzhang90@cugb.edu.cn) ; Li, Hailong(lihailong@sustech.edu.cn) |
| 英文摘要 | Submarine groundwater discharge (SGD) derived nutrient inputs have been extensively documented. However, SGD-derived carbon fluxes remain largely unconstrained, representing a critical gap in most coastal carbon budgets. Here, we resolve SGD and dissolved carbon budgets in the Pearl River Estuary (PRE), the largest estuary in Southern China surrounded by the world's largest urban conglomerate. Broadly-defined SGD contributes 89%-96% of the dissolved inorganic carbon (DIC) pool (2-4 times riverine inputs) and 20%-70% of the dissolved organic carbon (DOC) fluxes of the PRE. SGD transports DIC exceeding total alkalinity (TAlk) by 2.7-7 times, potentially driving pH decline and acidification of nearshore waters. Groundwater pCO2 values are 10-36 times higher than estuarine waters. SGD-derived DOC mineralization can decrease estuary water pH by 0.04-0.16 units and increase CO2 by 6.0-90.0 mu mol L-1, affecting local coral populations and benthic organisms. SGD also reduces seawater dissolved oxygen (DO) by 12-150 mu mol L-1 and fuels the development of hypoxic zones. Overall, SGD regionally intensifies seawater hypoxia and acidification, creating challenging conditions for coral reef survival in an already stressed ecosystem. Our findings demonstrate that SGD should be integrated into carbon budgets and ecological assessments of the land-ocean continuum. |
| WOS关键词 | PEARL RIVER ESTUARY ; DISSOLVED INORGANIC CARBON ; OCEAN ACIDIFICATION ; SEASONAL-VARIATIONS ; ORGANIC-CARBON ; DISCHARGE ; DRIVEN ; FLUXES ; WATER ; CO2 |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001710059700001 |
| 资助机构 | Guangdong-Hong Kong Joint Laboratory for Soil and Groundwater Pollution Control ; National Natural Science Foundation of China ; High Level of Special Funds ; Guangdong Provincial Key Laboratory for Soil and Groundwater Pollution Control |
| 源URL | [http://ir.yic.ac.cn/handle/133337/42258]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Zhang, Yan; Li, Hailong |
| 作者单位 | 1.Southern Univ Sci & Technol, Guangdong Prov Key Lab Soil & Groundwater Pollut, State Environm Protect Key Lab Integrated Surface, Sch Environm Sci & Engn, Shenzhen, Peoples R China 2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Hong Kong Joint Lab Soil & Groundwater P, Shenzhen, Peoples R China 3.Florida Atlantic Univ, Dept Geosci, Boca Raton, FL 33431 USA 4.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin, Peoples R China 5.Western Univ, Dept Civil & Environm Engn, London, ON, Canada 6.Univ Gothenburg, Dept Marine Sci, Gothenburg, Sweden 7.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China 8.Southern Univ Sci & Technol, State Key Lab Soil Pollut Control & Safety, Shenzhen, Peoples R China 9.China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing, Peoples R China 10.China Univ Geosci Beijing, State Key Lab Biogeol & Environm Geol, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhenyan,Zhang, Yan,Santos, Isaac R.,et al. Groundwater-Derived Carbon Promotes Hypoxia and Acidification in a Large Tropical Estuary[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2026,131(3):20. |
| APA | Wang, Zhenyan.,Zhang, Yan.,Santos, Isaac R..,Robinson, Clare E..,Wang, Xuejing.,...&Li, Hailong.(2026).Groundwater-Derived Carbon Promotes Hypoxia and Acidification in a Large Tropical Estuary.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,131(3),20. |
| MLA | Wang, Zhenyan,et al."Groundwater-Derived Carbon Promotes Hypoxia and Acidification in a Large Tropical Estuary".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 131.3(2026):20. |
入库方式： OAI收割
来源：烟台海岸带研究所
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