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Fate of terrigenous organic carbon within shelf sediments from the East China Sea controlled by sea-level and climatic changes since the last deglaciation

文献类型：期刊论文

作者Zhang, Mingyu1; Liu, Xiting1,4; Li, Anchun3; Chang, Xin1; Hu, Limin1,4; Bi, Naishuang1,4; Zhuang, Guangchao2; Wang, Houjie1,4
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2024-09-15
卷号650页码:13
关键词Organic carbon The East China Sea Sea-level change East Asian monsoon Depositional environment
ISSN号0031-0182
DOI10.1016/j.palaeo.2024.112386
通讯作者Liu, Xiting(liuxiting@ouc.edu.cn)
英文摘要The deposition of organic carbon in marine sediments plays a critical role in global carbon sequestration. The East China Sea (ECS) inner shelf, dominated by large river systems, receives significant inputs of terrestrial organic carbon transported by rivers, offering valuable insights into the fate of terrigenous organic carbon in response to sea-level and climatic changes. Based on the total organic carbon (TOC) contents, delta 13C values of the TOC, and dry bulk density of core ECMZ, as well as comprehensive analysis of core EC2005 data, our results indicate that sedimentary organic carbon in core ECMZ exhibits mixed sources, with terrigenous organic carbon contributing up to 80%. On a long timescale, the burial of terrigenous organic carbon is primarily controlled by the evolution of the depositional environment and the East Asian summer monsoon, with stronger monsoons leading to increased terrigenous organic matter transport from the Changjiang River into the ECS inner shelf. During the deglacial and Holocene cold periods, the proportion of terrigenous organic carbon peaks due to the influence of the East Asian winter monsoon. Spatially, the proportion of terrigenous components decreases with distance from the estuary, while sedimentation rate emerges as a key controlling factor for terrigenous organic carbon deposition flux. Estimations suggest that since 17.5 ka, the flux of terrigenous organic carbon on the ECS inner shelf has averaged 3 x 103 t C km- 2 a-1, with a TOC flux ranging from 4 to 5 x 103 t C km-2 a- 1. These findings deepen our understanding of the dynamics of terrigenous organic carbon deposition in the ECS inner shelf and underscore the importance of climatic variability in shaping carbon burial processes in marginal seas.
WOS关键词YANGTZE-RIVER ; NORTH-ATLANTIC ; INNER SHELF ; CHANGJIANG ESTUARY ; ISOTOPIC COMPOSITIONS ; CONTINENTAL MARGINS ; SURFACE SEDIMENTS ; MARINE-SEDIMENTS ; HIGH-RESOLUTION ; YELLOW SEA
资助项目National Natural Science Foundation of China[42276060] ; Natural Sci-ence Foundation of Shandong Province[ZR2021YQ26]
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
WOS记录号WOS:001275871300001
出版者ELSEVIER
源URL[http://ir.qdio.ac.cn/handle/337002/186102]  
专题海洋研究所_海洋地质与环境重点实验室
通讯作者Liu, Xiting
作者单位1.Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Technol, Qingdao 266100, Peoples R China
2.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
4.Qingdao Marine Sci & Technol Ctr, Lab Marine Geol, Qingdao 266237, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Mingyu,Liu, Xiting,Li, Anchun,et al. Fate of terrigenous organic carbon within shelf sediments from the East China Sea controlled by sea-level and climatic changes since the last deglaciation[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2024,650:13.
APA Zhang, Mingyu.,Liu, Xiting.,Li, Anchun.,Chang, Xin.,Hu, Limin.,...&Wang, Houjie.(2024).Fate of terrigenous organic carbon within shelf sediments from the East China Sea controlled by sea-level and climatic changes since the last deglaciation.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,650,13.
MLA Zhang, Mingyu,et al."Fate of terrigenous organic carbon within shelf sediments from the East China Sea controlled by sea-level and climatic changes since the last deglaciation".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 650(2024):13.

入库方式： OAI收割

来源：海洋研究所

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