Sources, dispersal and preservation of sedimentary organic matter in the Yellow Sea: The importance of depositional hydrodynamic forcing

doi:10.1016/j.margeo.2012.10.008

	Sources, dispersal and preservation of sedimentary organic matter in the Yellow Sea: The importance of depositional hydrodynamic forcing
	Hu, Limin 1,3; Shi, Xuefa 1; Guo, Zhigang 2,3; Wang, Houjie 3; Yang, Zuosheng 3
刊名	MARINE GEOLOGY
	2013-01
卷号	335 页码:52-63
关键词	surface sediments organic matter n-alkanes depositional hydrodynamics The Yellow Sea
ISSN号	0025-3227
DOI	10.1016/j.margeo.2012.10.008
英文摘要	The sources, distribution and fate of sedimentary organic matter (SOM) in the Yellow Sea (YS) were studied based on the datasets of total organic carbon (TOC), total nitrogen (TN), organic carbon isotopic values (delta C-13) and n-alkanes of forty-seven surface sediment samples. The spatial pattern of TOC and TN coincided with that of the sediment grain size, suggesting the hydrodynamic constraints on the accumulation of SOM in the YS. The relatively low TOC/TN ratios with contrasting TN intercept of the regression lines indicate the influence of the sorption of inorganic N in the NYS and a mixture of microorganism-derived N-rich OM pool with the terrigenous N-poor OM for the SYS sediment samples, respectively. The enriched delta C-13 could also be partially related to the agriculture inputs due to the enhanced fertilization process in addition to the planktonic-derived OM. Molecular compositions of n-alkanes and principal component analysis (PCA) showed a significant terrigenous contribution for the SOM in the central mud deposits. The observed even carbon preference of the short chain length n-alkanes (C-12-C-22) reveals the potential contribution of microorganism-derived OM in the YS. Combined lines of evidence of significant terrigenous n-alkanes in the YS suggest that the hydrodynamic forcing plays a key role on the selective dispersal and preferential accumulation of the fluvial terrigenous organic materials. The simplified terrigenous SOM transport pathway to the central mud deposits of the YS was conceptually constructed based on the mixed sediments provenances, hydrodynamic transport and depositional mechanism of the fine-grained sediments in this region. (C) 2012 Elsevier B.V. All rights reserved.
资助项目	China Geological Survey[1212010611402]
WOS关键词	EAST CHINA SEA ; SURFACE SEDIMENTS ; RIVER SEDIMENT ; N-ALKANES ; SURFICIAL SEDIMENTS ; ATCHAFALAYA RIVER ; COASTAL SEDIMENTS ; SUSPENDED MATTER ; SUBAQUEOUS DELTA ; GRAIN-SIZE
WOS研究方向	Geology ; Oceanography
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000315002100004
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26626]
专题	自然资源部第一海洋研究所
通讯作者	Hu, Limin
作者单位	1.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China 2.Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China 3.Ocean Univ China, Coll Marine Geosci, Minist Educ China, Key Lab Submarine Geosci & Prospecting Tech, Qingdao 266100, Peoples R China
推荐引用方式 GB/T 7714	Hu, Limin,Shi, Xuefa,Guo, Zhigang,et al. Sources, dispersal and preservation of sedimentary organic matter in the Yellow Sea: The importance of depositional hydrodynamic forcing[J]. MARINE GEOLOGY,2013,335:52-63.
APA	Hu, Limin,Shi, Xuefa,Guo, Zhigang,Wang, Houjie,&Yang, Zuosheng.(2013).Sources, dispersal and preservation of sedimentary organic matter in the Yellow Sea: The importance of depositional hydrodynamic forcing.MARINE GEOLOGY,335,52-63.
MLA	Hu, Limin,et al."Sources, dispersal and preservation of sedimentary organic matter in the Yellow Sea: The importance of depositional hydrodynamic forcing".MARINE GEOLOGY 335(2013):52-63.