Multiple proxy estimates of source and spatial variation in organic matter in surface sediments from the southern Yellow Sea

doi:10.1016/j.orggeochem.2014.07.005

	Multiple proxy estimates of source and spatial variation in organic matter in surface sediments from the southern Yellow Sea
	Xing, Lei 1,2; Zhao, Meixun 1,2; Gao, Wenxian 1,2; Wang, Fei 1,2; Zhang, Hailong 1,2; Li, Li 1,2; Liu, Jian 3; Liu, Yanguang 4
刊名	ORGANIC GEOCHEMISTRY
	2014-11
卷号	76 页码:72-81
关键词	Carbon cycle Biomarker BIT delta C-13 The Yellow Sea
ISSN号	0146-6380
DOI	10.1016/j.orggeochem.2014.07.005
英文摘要	Marginal seas play an important role in the global carbon cycle as organic matter (OM) buried in shelf seas accounts for ca. 80% of marine sedimentary OM. The Yellow Sea (YS) is a significant sink for both terrestrial OM(TOM) and marine OM(MOM), so the source and spatial variation of sedimentary OM in the southern YS were investigated by analyzing several parameters for 54 surface sediment samples. Spatial ranges were 5.4-12.8 for total organic carbon/total organic nitrogen (TOC/TON), -22.8 parts per thousand to -19.9 parts per thousand for TOC delta C-13, 421-4515 ng/g TOC for Sigma(C-27 + C-29 + C-31) n-alkanes, 33-152 ng/g TOC for branched glycerol dialkyl glycerol tetraethers, 316-8550 ng/g TOC for total marine biomarkers. TOC/TON displayed no distinct spatial pattern, but the BIT (branched isoprenoid tetratether index) proxy, TMBR[terrestrial and marine biom arker ratio: (C-27 + C-29 + C-31 n-alkanes)/(C-27 + C-29 + C-31) n-alka nes + (brassicasterol + dinosterol + alkenones)] and delta C-13 values revealed similar spatial distribution patterns, indicating higher TOM near coastal regions and especially near the old Huanghe Estuary. Quantitative estimates using a binary model revealed higher %TOM (avg. 34%) from TMBR than from delta C-13 (avg. 26%) and BIT (avg. 12%). TMBR is a proxy incorporating both soil OM(OMsoil) and plant OM(OMplant) while BIT is a proxy for OMsoil, so quantitative estimates using a three end member model indicated higher OMplant and OMsoil values near the old Huanghe Estuary, but %OMplant (avg. 23%) was higher than % OMsoil (avg. 13%). Our study suggests that these proxies can be used to study the spatial and temporal variation and delivery mechanisms for both OMsoil and OMplant in marginal seas. (C) 2014 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[41020164005] ; National Natural Science Foundation of China[41276068] ; National Natural Science Foundation of China[41221004]
WOS关键词	DIALKYL GLYCEROL TETRAETHERS ; COMPOUND-SPECIFIC DELTA-C-14 ; CARBON ISOTOPIC COMPOSITION ; CHAIN N-ALKANES ; MEMBRANE-LIPIDS ; MARINE-SEDIMENTS ; RIVER SEDIMENT ; ARABIAN SEA ; TERRESTRIAL ; CHINA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000343813800007
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25475]
专题	自然资源部第一海洋研究所
通讯作者	Zhao, Meixun
作者单位	1.Ocean Univ China, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China 2.Ocean Univ China, Inst Marine Organ Geochem, Qingdao 266100, Peoples R China 3.Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China 4.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Xing, Lei,Zhao, Meixun,Gao, Wenxian,et al. Multiple proxy estimates of source and spatial variation in organic matter in surface sediments from the southern Yellow Sea[J]. ORGANIC GEOCHEMISTRY,2014,76:72-81.
APA	Xing, Lei.,Zhao, Meixun.,Gao, Wenxian.,Wang, Fei.,Zhang, Hailong.,...&Liu, Yanguang.(2014).Multiple proxy estimates of source and spatial variation in organic matter in surface sediments from the southern Yellow Sea.ORGANIC GEOCHEMISTRY,76,72-81.
MLA	Xing, Lei,et al."Multiple proxy estimates of source and spatial variation in organic matter in surface sediments from the southern Yellow Sea".ORGANIC GEOCHEMISTRY 76(2014):72-81.