| Distribution, sources and burial flux of sedimentary organic matter in the East China Sea | |
| Wu, Xiaodan1,3,4; Wu, Bin2,3; Jiang, Mingyu1,3,4; Chang, Fengming1,3,4; Nan, Qingyun1,3,4; Yu, Xinke1,3,4; Gaowa, Saren1,3,4 | |
| 2020-05-15 | |
| 发表期刊 | JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| ISSN | 2096-5508 |
| 页码 | 14 |
| 通讯作者 | Wu, Bin(wubin@fio.org.cn) ; Chang, Fengming(chfm@qdio.ac.cn) |
| 摘要 | Distribution of total organic carbon (TOC), total nitrogen (TN), stable isotope ratio of organic carbon and nitrogen (delta C-13 and delta N-15) in 31 surface sediments were examined to quantitatively discriminate the source and burial of sedimentary organic matter (SOM) in the East China Sea (ECS). Results show that high content of TOC and TN occurred in the southern inner shelf and the northeast area due to the transport of organic matter (OM) from the Changjiang (Yangtze) River southwards by the Zhejiang Fujian Coastal Current (ZFCC) and the delivery from the old Huanghe (Yellow) River estuary by the Subei Coastal Current (SbCC), respectively. The significant relationship of TOC to clay provided evidence that the fine-grained sediment was the primary carrier for SOM from the inner shelf to open sea. The TN varied proportionally to the TOC with the neglected intercept, suggesting that most of nitrogen measured was related to the SOM and the influence of the sorption of inorganic nitrogen was insignificant. The seaward enrichment of delta C-13 and seaward depletion of C/N and delta N-15 illustrated the decrease of terrestrial OM (TOM) and the increase of marine OM (MOM). The close of average C/N ratio to the Redfield ratio indicated the minor role of terrestrial plant debris in the SOM. Distribution of bulk OM properties was ascribed to the terrestrial and marine input by the shelf circulation and phytoplankton with the contributions of 76.1% MOM and 23.9% TOM to SOM, respectively. The burial flux of OC ranged within 0.34-7.56 mg/(cm(2 center dot)a) (averaged 2.80 mg/(cm(2 center dot)a)) and enriched along the shore and in the fine-grained area, manifesting the significant input of the land-based sources and the effect of shelf mud depositional process on the fate of SOM. The sharp seaward decrease of burial fluxes of terrestrial and marine OC gave evidences that the majority of organic carbon were settled in the inner shelf with the small fraction of them further transported eastwards. |
| 关键词 | distribution sedimentary organic matter sources burial East China Sea (ECS) |
| DOI | 10.1007/s00343-020-0037-2 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42030100] ; National Special Project Global Change and Atmosphere-ocean Interactions[GASI-GEOGE-04] ; National Natural Science Foundation of China[41830539] ; National Natural Science Foundation of China[41576054] ; National Natural Science Foundation of China[41976202] ; National Natural Science Foundation of China[41576064] ; Open Fund of CAS Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences ; Open Fund Project of the Key Laboratory of Marine Sedimentology and Environmental Geology, Ministry of Natural Resources[MASEG201901] |
| WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
| WOS类目 | Limnology ; Oceanography |
| WOS记录号 | WOS:000565844400001 |
| 出版者 | SCIENCE PRESS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/168469 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Wu, Bin; Chang, Fengming |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 通讯作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Wu, Xiaodan,Wu, Bin,Jiang, Mingyu,et al. Distribution, sources and burial flux of sedimentary organic matter in the East China Sea[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2020:14. |
| APA | Wu, Xiaodan.,Wu, Bin.,Jiang, Mingyu.,Chang, Fengming.,Nan, Qingyun.,...&Gaowa, Saren.(2020).Distribution, sources and burial flux of sedimentary organic matter in the East China Sea.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,14. |
| MLA | Wu, Xiaodan,et al."Distribution, sources and burial flux of sedimentary organic matter in the East China Sea".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2020):14. |
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