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Combining sterols with stable carbon isotope as indicators for assessing the organic matter sources and primary productivity evolution in the coastal areas of the East China Sea

文献类型：期刊论文

作者Wang, Yueqi1,2,3,4; Song, Jinming1,2,3,4,5; Duan, Liqin1,2,3,4; Yuan, Huamao1,2,3,4; Li, Xuegang1,2,3,4; Li, Ning1,2,3,4,5; Zhang, Qian2,4,5; Liu, Jin2,4,5; Ren, Chengzhe6
刊名CONTINENTAL SHELF RESEARCH
出版日期2021-07-01
卷号223页码:11
关键词Sterols Stable carbon isotope Organic matter sources Phytoplankton community structure Sediment East China Sea
ISSN号0278-4343
DOI10.1016/j.csr.2021.104446
通讯作者Song, Jinming(jmsong@qdio.ac.cn) ; Duan, Liqin(duanliqin@qdio.ac.cn)
英文摘要To identify the sedimentary organic matter (OM) sources and reconstruct primary productivity evolution process in the coastal areas of the East China Sea (ECS), carbon, nitrogen and carbon stable isotope (delta 13C) combined with sterols were studied in the surface and core sediments. The quantitative calculations of delta 13C model and characteristic sterols suggested that the OM is derived from mixed marine and terrestrial inputs. Sinking marine phytoplankton was the dominant marine OM (MOM) source, with the average MOM proportion calculated by two end-member model of delta 13C and characteristic sterol analysis of 73% and 62%, respectively. Terrestrial organic matter (TOM) displayed a decreasing trend seaward, attributed to the Changjiang River input as the dominant terrestrial source pathway. The decreased proportion of TOM with age in the core sediment was mainly controlled by the fluctuating changes of freshwater and sediment influxes of the Changjiang River. The sum content of epi-brassicasterol and dinosterol increased with age in recent 30 years, suggesting the increasing phytoplankton productivity. Enhanced anthropogenic nutrient inputs from the Changjiang River as well as the incremental nutrient supplement from the deep waters of the coastal upwelling area aggravated the phytoplankton blooms. Besides, the increasing ratio of epi-brassicasterol to dinosterol contents (B/D ratio) with age revealed the increasing diatom productivity relative to dinoflagellate productivity. This variation was mostly attributed to the natural forcing of the increased nutrient supplement from intensified coastal upwelling in the Zhejiang coastal mud area.
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050501] ; National Natural Science Foundation of China[41676068] ; National Natural Science Foundation of China[41976037] ; Key Project of Center for Ocean Mega-Science of the Chinese Academy of Sciences[COMS2019Q12]
WOS研究方向Oceanography
语种英语
WOS记录号WOS:000655514800003
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://ir.qdio.ac.cn/handle/337002/176807]  
专题海洋研究所_海洋生态与环境科学重点实验室
通讯作者Song, Jinming; Duan, Liqin
作者单位1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
5.Chinese Acad Sci, Publ Technol Serv Ctr, Inst Oceanol, Qingdao 266071, Peoples R China
6.Zhejiang Ocean Univ, Coll Marine Sci & Technol, Zhoushan 316004, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Yueqi,Song, Jinming,Duan, Liqin,et al. Combining sterols with stable carbon isotope as indicators for assessing the organic matter sources and primary productivity evolution in the coastal areas of the East China Sea[J]. CONTINENTAL SHELF RESEARCH,2021,223:11.
APA Wang, Yueqi.,Song, Jinming.,Duan, Liqin.,Yuan, Huamao.,Li, Xuegang.,...&Ren, Chengzhe.(2021).Combining sterols with stable carbon isotope as indicators for assessing the organic matter sources and primary productivity evolution in the coastal areas of the East China Sea.CONTINENTAL SHELF RESEARCH,223,11.
MLA Wang, Yueqi,et al."Combining sterols with stable carbon isotope as indicators for assessing the organic matter sources and primary productivity evolution in the coastal areas of the East China Sea".CONTINENTAL SHELF RESEARCH 223(2021):11.

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来源：海洋研究所

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