Greenhouse gases emissions and dissolved carbon export affected by submarine groundwater discharge in a maricultural bay, Hainan Island, China
文献类型：期刊论文
| 作者 | Liu, Jiawei1; Chen, Yuanqing1; Wang, Yiqing1; Du, Mengran2 ; Wu, Zijun1
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023-01-20 |
| 卷号 | 857 |
| ISSN号 | 1879-1026 |
| 关键词 | Submarine groundwater discharge Greenhouse gases Mariculture 222Rn Methane Carbon dioxide |
| 文献子类 | 期刊论文 |
| 英文摘要 | Greenhouse gases (GHG) emissions in coastal areas are influenced by both mariculture and submarine groundwater discharge (SGD). In this study, we first conducted a comprehensive investigation on carbon dioxide (CO2) and meth-ane (CH4) emissions affected by SGD in a typical maricultural bay in north-eastern Hainan Island, China. A radon (Rn-222) mass balance model revealed considerable high SGD rates (179 +/- 92 cm d(-1)) in the bay, and the fluxes of SGD-derived dissolved inorganic carbon (DIC) and dissolved organic carbon (DOC) were 150.36 and 3.65 g C m(-2) d(-1), respectively. Time-series measurement results, including those for Rn-222, CH4, CO2, and physicochemical param-eters, indicated that GHG dynamics in the maricultural bay mainly varied with tidal fluctuations, and isotopic evidence further revealed that acetate fermentation was the main mechanism of methanogenesis in the maricultural waters. The water-air fluxes in the maricultural area were 1.05 +/- 0.32 and 9.49 +/- 3.96 mmol m(-2) day(-1) for CH4 and CO2, re-spectively, implying that Qinglan Bay was a potential source of GHG released into the atmosphere. At the bay-scale, the CO2 emissions followed a spatial pattern, and the CH4 emissions were mainly affected by mariculture. The high CH4 emissions in the maricultural waters caused by maricultural activities, SGD, high temperature, and special hydrol-ogy resulted in the formation of the CH4-dominated total CO2-equivalent emissions model. Our study highlights the importance of considering the link between SGD and GHG emissions in maricultural bays when constraining global GHG fluxes. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000929818100005 |
| 版本 | 出版稿 |
| 源URL | [http://ir.idsse.ac.cn/handle/183446/10167]  |
| 专题 | 深海科学研究部_深海地质与地球化学研究室 |
| 作者单位 | 1.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China; 2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Deep Sea Sci Div, Sanya, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jiawei,Chen, Yuanqing,Wang, Yiqing,et al. Greenhouse gases emissions and dissolved carbon export affected by submarine groundwater discharge in a maricultural bay, Hainan Island, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,857. |
| APA | Liu, Jiawei,Chen, Yuanqing,Wang, Yiqing,Du, Mengran,&Wu, Zijun.(2023).Greenhouse gases emissions and dissolved carbon export affected by submarine groundwater discharge in a maricultural bay, Hainan Island, China.SCIENCE OF THE TOTAL ENVIRONMENT,857. |
| MLA | Liu, Jiawei,et al."Greenhouse gases emissions and dissolved carbon export affected by submarine groundwater discharge in a maricultural bay, Hainan Island, China".SCIENCE OF THE TOTAL ENVIRONMENT 857(2023). |
入库方式： OAI收割
来源：深海科学与工程研究所
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