Evaluation of Sedimentary Organic Carbon Reactivity and Burial in the Eastern China Marginal Seas

doi:10.1029/2021JC017207

	Evaluation of Sedimentary Organic Carbon Reactivity and Burial in the Eastern China Marginal Seas
	Guo, Jinqiang 1,2,3,4; Yuan, Huamao1,2,3,4 ; Song, Jinming1,2,3,4 ; Li, Xuegang 1,2,3,4; Duan, Liqin 1,2,3,4; Li, Ning 2,3,4,5; Wang, Yingxia 4,5
	2021-04-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
卷号	126 期号:4 页码:14
通讯作者	Yuan, Huamao([email protected]) ; Song, Jinming([email protected])
摘要	Dynamic physicochemical interactions along continental margins create complex organic carbon (OC) cycles that have a significant impact on the global climate but remain enigmatic; in particular, the OC burial behaviors in mud areas are still unclear. Herein, the molecular and bulk properties of sedimentary OC (SOC) were investigated in eastern China marginal seas to better understand the fate of SOC. The source discrimination analysis showed that SOC was mainly derived from indigenous production and experienced strong heterotrophic alteration, as indicated by low glucosamine/galactosamine ratios (<3) and the relatively high contribution of bacterial OC (similar to 25%). The South Yellow Sea mud area (SYSMA) and East China Sea mud area (ECSMA) both represented hot spots for SOC burial, but the SYSMA exhibited lower SOC reactivity than the ECSMA because of intense degradation in the water column. Although the net particulate OC deposition flux in the ECSMA was approximately 5 times that of the SYSMA, the SOC burial efficiencies (similar to 35%) of these two areas were similar due to the presence of cold water masses and cyclonic eddies in the SYSMA (which are beneficial for the storage of SOC) and the active remineralization driven by the priming effect and intense physical reworking in the ECSMA. As human disturbance and global climate change intensify, the role of distal mud areas (represented by the SYSMA) in SOC burial may become increasingly prominent, while the SOC burial in inner shelf mobile mud areas (such as the ECSMA) affected by large rivers may be significantly reduced.
关键词	biomarker burial mud deposit reactivity sedimentary organic carbon source
DOI	10.1029/2021JC017207
收录类别	SCI
语种	英语
资助项目	Key Project of Center for Ocean Mega-Science of the Chinese Academy of Sciences[COMS2019Q12]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050501]; Key Science and Technology Innovation Program by Shandong Province; Qingdao National Laboratory for Marine Science and Technology[2018SDKJ0504-1]; National Natural Science Foundation of China[41976037]; Two-Hundred Talents Plan of Yantai Scholar Project Special Fund; Shandong Provincial Natural Science Foundation[ZR2020YQ28]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000645019200041
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：12[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/337002/170953
专题	海洋生态与环境科学重点实验室
通讯作者	Yuan, Huamao; Song, Jinming
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 5.Chinese Acad Sci, Publ Technol Serv Ctr, Inst Oceanol, Qingdao, Peoples R China
第一作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
通讯作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Guo, Jinqiang,Yuan, Huamao,Song, Jinming,et al. Evaluation of Sedimentary Organic Carbon Reactivity and Burial in the Eastern China Marginal Seas[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2021,126(4):14.
APA	Guo, Jinqiang.,Yuan, Huamao.,Song, Jinming.,Li, Xuegang.,Duan, Liqin.,...&Wang, Yingxia.(2021).Evaluation of Sedimentary Organic Carbon Reactivity and Burial in the Eastern China Marginal Seas.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,126(4),14.
MLA	Guo, Jinqiang,et al."Evaluation of Sedimentary Organic Carbon Reactivity and Burial in the Eastern China Marginal Seas".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 126.4(2021):14.

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