Dramatic Decline in Organic Carbon Burial in Big Estuary Driven by Dam Construction: Insights From the Yellow River Estuary
文献类型：期刊论文
| 作者 | Liu, Shan Shan2,3; Song, Jin Ming1,2,3; Li, Xue Gang1,2,3; Wang, Zhi Bo1,2; Yuan, Hua Mao1,2,3; Duan, Li Qin1,2,3; Tian, De Tong1,2; Zhong, Guo Rong2,3; Ma, Jun2,3; Wang, Rui1,2 |
| 刊名 | EARTHS FUTURE
 |
| 出版日期 | 2026-03-05 |
| 卷号 | 14期号:3页码:17 |
| 关键词 | organic carbon burial dam construction sediment flux Yellow River Estuary |
| DOI | 10.1029/2025EF006564 |
| 通讯作者 | Song, Jin Ming(jmsong@qdio.ac.cn) ; Li, Xue Gang(lixuegang@qdio.ac.cn) |
| 英文摘要 | Estuaries and associated shelf deposits, which bury 70%-90% of global marine organic carbon, making them key sites for marine carbon burial. Variations in total organic carbon (TOC) content and the organic carbon burial rate (OCBR) in these sediments strongly influence carbon sequestration dynamics. Using the Yellow River Estuary as a representative case, this study assessed the impact of watershed damming on estuarine organic carbon burial based on 2023 field data and records from 1984 to 2023. Following the construction of the Xiaolangdi Reservoir, sediment TOC and OCBR in the Yellow River Estuary decreased by 46% (from 0.55% +/- 0.08%-0.30% +/- 0.12%) and 58% (from 155.0 +/- 22.0 to 66.0 +/- 25.0 g m(-2) yr(-1)), respectively. This change was primarily attributed to a nearly 90% decline in sediment flux to the sea following reservoir construction, accompanied by significant sediment coarsening. Similar reservoir-induced declines in estuarine carbon sinks have been widely observed in big estuaries such as the Mekong, Mississippi, and Nile rivers. Extrapolating from the empirical relationship between sediment flux and OCBR in the Yellow River Estuary, global damming is estimated to have reduced estuarine OCBR by approximately 33.6%, equivalent to an annual loss of about 23.5 Tg C in organic carbon burial. Collectively, sediment depletion and grain-size coarsening are identified as major drivers of estuarine OCBR decline. These findings underscore the need to incorporate evolving estuarine carbon burial "hotspots" into global carbon cycle models. |
| WOS关键词 | WATER-SEDIMENT REGULATION ; ADJACENT BOHAI SEA ; SUSPENDED-SEDIMENT ; SURFACE SEDIMENTS ; C/N RATIOS ; XIAOLANGDI RESERVOIR ; CONTINENTAL-SHELF ; EARLY DIAGENESIS ; MATTER ; DELTA |
| 资助项目 | Shandong Provincial Foundation Project[SDCX-ZG-202400181] ; the Natural Science Foundation of Shandong Province[ZR2024QD233] ; the postdoctoral fellowship program of CPSF[GZC20232705] ; Qingdao Postdoctoral Applied Research Project[QDBSH20240101018] ; National Natural Science Foundation of China[42406040] ; National Natural Science Foundation of China[42476204] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001707448600001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204868]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 通讯作者 | Song, Jin Ming; Li, Xue Gang |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Inst Oceanol, Qingdao, Peoples R China 3.Qingdao Marine Sci & Technol Ctr, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Shan Shan,Song, Jin Ming,Li, Xue Gang,et al. Dramatic Decline in Organic Carbon Burial in Big Estuary Driven by Dam Construction: Insights From the Yellow River Estuary[J]. EARTHS FUTURE,2026,14(3):17. |
| APA | Liu, Shan Shan.,Song, Jin Ming.,Li, Xue Gang.,Wang, Zhi Bo.,Yuan, Hua Mao.,...&Wang, Rui.(2026).Dramatic Decline in Organic Carbon Burial in Big Estuary Driven by Dam Construction: Insights From the Yellow River Estuary.EARTHS FUTURE,14(3),17. |
| MLA | Liu, Shan Shan,et al."Dramatic Decline in Organic Carbon Burial in Big Estuary Driven by Dam Construction: Insights From the Yellow River Estuary".EARTHS FUTURE 14.3(2026):17. |
入库方式： OAI收割
来源：海洋研究所
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