Groundwater carbon biogeochemistry of coastal confined aquifers and its implications after discharge
文献类型：期刊论文
| 作者 | Su, Jingjing4,5; Liu, Yi3; Xie, Yueqing4,5; Gong, Xulong2; Chen, Tianyu4,5; Zhang, Yan2; Han, Dongmei1; Wu, Jichun4,5 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2025-07-01 |
| 卷号 | 655页码:132970 |
| 关键词 | Coastal confined aquifers Dissolved inorganic carbon Biogeochemical processes Ocean acidification |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2025.132970 |
| 产权排序 | 5 |
| 文献子类 | Article |
| 英文摘要 | Shallow groundwater discharge from unconfined aquifers is known to affect ocean carbon budget and ocean acidification. However, the role of deeper groundwater discharge from confined aquifers in ocean carbonate chemistry was previously overlooked. Here, we characterized dissolved inorganic carbon (DIC) and total alkalinity (TA) concentrations and estimated DIC and TA fluxes from confined aquifers (50 similar to 520 m depth) in the northern Yangtze River Delta. The results show that deep groundwater generally exhibits high DIC concentrations, primarily influenced by carbonate weathering and methanogenesis. The DIC concentrations in the deep groundwater (50 similar to 520 m depth) are about 14 % lower than the TA concentrations, indicating that the deep groundwater discharge mitigates ocean acidification. However, the DIC concentrations in shallow groundwater (<30 m depth) are much higher than the TA concentrations, indicating the strengthening of ocean acidification after discharging to the sea. The mean [TA-DIC] flux from the deep groundwater accounts for approximately 8 % of that from the shallow groundwater, but overlooking the deep groundwater will considerably overestimate the effect of terrestrial groundwater on ocean acidification. |
| URL标识 | 查看原文 |
| WOS关键词 | DISSOLVED INORGANIC CARBON ; PEARL RIVER DELTA ; GEOCHEMICAL PROCESSES ; OCEAN ACIDIFICATION ; BENGAL BASIN ; EVOLUTION ; SYSTEM ; FLUXES ; SEAWATER ; WATER |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001437278800001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/213201]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 通讯作者 | Xie, Yueqing |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 2.Geol Survey Jiangsu Prov, Nanjing, Peoples R China; 3.Hong Kong Univ Sci & Technol Guangzhou, Earth Ocean & Atmospher Sci EOAS Thrust, Funct Hub, Guangzhou, Peoples R China; 4.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, Nanjing, Peoples R China; 5.Nanjing Univ, Sch Earth Sci & Engn, Key Lab Surficial Geochem, Minist Educ, Nanjing, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Su, Jingjing,Liu, Yi,Xie, Yueqing,et al. Groundwater carbon biogeochemistry of coastal confined aquifers and its implications after discharge[J]. JOURNAL OF HYDROLOGY,2025,655:132970. |
| APA | Su, Jingjing.,Liu, Yi.,Xie, Yueqing.,Gong, Xulong.,Chen, Tianyu.,...&Wu, Jichun.(2025).Groundwater carbon biogeochemistry of coastal confined aquifers and its implications after discharge.JOURNAL OF HYDROLOGY,655,132970. |
| MLA | Su, Jingjing,et al."Groundwater carbon biogeochemistry of coastal confined aquifers and its implications after discharge".JOURNAL OF HYDROLOGY 655(2025):132970. |
入库方式： OAI收割
来源：地理科学与资源研究所
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