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

doi:10.1016/j.palaeo.2024.112386

IOCAS-IR > 海洋地质与环境重点实验室

	Fate of terrigenous organic carbon within shelf sediments from the East China Sea controlled by sea-level and climatic changes since the last deglaciation
	Zhang, Mingyu 1; Liu, Xiting 1,2; Li, Anchun 3; Chang, Xin 1; Hu, Limin 1,2; Bi, Naishuang 1,2; Zhuang, Guangchao 4; Wang, Houjie 1,2
	2024-09-15
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	650 页码:13
通讯作者	Liu, Xiting(liuxiting@ouc.edu.cn)
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.
关键词	Organic carbon The East China Sea Sea-level change East Asian monsoon Depositional environment
DOI	10.1016/j.palaeo.2024.112386
收录类别	SCI
语种	英语
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
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:001275871300001
出版者	ELSEVIER
WOS关键词	YANGTZE-RIVER ; NORTH-ATLANTIC ; INNER SHELF ; CHANGJIANG ESTUARY ; ISOTOPIC COMPOSITIONS ; CONTINENTAL MARGINS ; SURFACE SEDIMENTS ; MARINE-SEDIMENTS ; HIGH-RESOLUTION ; YELLOW SEA
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/186103
专题	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.Qingdao Marine Sci & Technol Ctr, Lab Marine Geol, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 4.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, 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.