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The use of sterols combined with isotope analyses as a tool to identify the origin of organic matter in the East China Sea
Duan, Li-Qin1,2; Song, Jin-Ming1,2; Yuan, Hua-Mao1,2; Li, Xue-Gang1,2; Li, Ning1,2; Peng, Quan-Cai1,3
2017-12-01
发表期刊ECOLOGICAL INDICATORS
卷号83页码:144-157
文章类型Article
摘要To evaluate the sources and budgets of sedimentary organic matter in the East China Sea (ECS), bulk organic matter properties (total organic carbon (TOC), C/N ratio, carbon and nitrogen isotopic composition (delta C-13 and delta N-15)) and sterols in surface sediments were analyzed. The distributions of bulk organic matter properties and sterols showed a strong regionality with higher contents in the southern inner shelf as well as the offshore upwelling area. It was consistent with the increasing mud and chlorophyll a (Chl a) contents southwards. These distribution patterns were attributed to the terrestrial inputs by shelf circulations and phytoplankton contribution. Both of bulk organic matter properties and sterols indicated a mixture of terrestrial and marine derived organic matter inputs with marine source as a dominant input. Budgets suggested that organic carbon (OC) and sterol influxes from terrestrial source were 5.15 x 10(6) and 3.32 x 10(3) t/yr, with the Changjiang River input as the primary contributor; and while their influxes from marine source were 26.3 x 10(6) and 2.19 x 10(3) t/yr, respectively. The burial fluxes of OC and sterol were 3.99 x 10(6) t C/yr and 0.21 x 10(3) t/yr, with the inner shelf as main accumulation area. Although there was a huge amount of OC influx from terrestrial and marine sources, but only 24.6% and 10% of them could be preserved in sediments. Consequently, the combined effect of riverine input, marine primary productivity and deposition decided the organic matter behaviors in the ECS.
关键词Sterol Isotopic Composition Organic Matter Sediment The East China Sea
DOI10.1016/j.ecolind.2017.07.012
收录类别SCI
语种英语
WOS记录号WOS:000417551800015
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文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/154312
专题海洋生态与环境科学重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Marine Ecol & Environm Sci Lab, Qingdao 266237, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Analyt Ctr, Qingdao 266071, Peoples R China
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Duan, Li-Qin,Song, Jin-Ming,Yuan, Hua-Mao,et al. The use of sterols combined with isotope analyses as a tool to identify the origin of organic matter in the East China Sea[J]. ECOLOGICAL INDICATORS,2017,83:144-157.
APA Duan, Li-Qin,Song, Jin-Ming,Yuan, Hua-Mao,Li, Xue-Gang,Li, Ning,&Peng, Quan-Cai.(2017).The use of sterols combined with isotope analyses as a tool to identify the origin of organic matter in the East China Sea.ECOLOGICAL INDICATORS,83,144-157.
MLA Duan, Li-Qin,et al."The use of sterols combined with isotope analyses as a tool to identify the origin of organic matter in the East China Sea".ECOLOGICAL INDICATORS 83(2017):144-157.
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