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The sources and composition of organic matter in sediments of the Jiaozhou Bay: implications for environmental changes on a centennial time scale
Kang, Xuming1,2,3; Song, Jinming1,2,3; Yuan, Huamao1,2,3; Li, Xuegang1,2,3; Li, Ning1,2,3; Duan, Liqin1,2,3
2017-11-01
Source PublicationACTA OCEANOLOGICA SINICA
Volume36Issue:11Pages:68-78
SubtypeArticle
AbstractThe Jiaozhou Bay is characterized by heavy eutrophication that is associated with intensive anthropogenic activities. Four core sediments from the Jiaozhou Bay are analyzed using bulk technologies, including sedimentary total organic carbon (TOC), total nitrogen (TN), the stable carbon (delta C-13) and nitrogen (delta N-15) isotopic composition to obtain the comprehensive understanding of the source and composition of sedimentary organic matter and further shed light on the environmental changes of the Jiaozhou Bay on a centennial time scale. Results suggest that the TOC and TN concentrations increase in the upper core, having indicated a probable eutrophication process since the 1920s in the inner bay and the 2000s in the bay mouth. The TOC and TN concentrations outside the bay have also changed since 1916 owing to the variation of terrigenous input. Considering TOC/TN ratio, delta C-13 and delta N-15, it can be concluded there is a mixture of terrigenous and marine organic matter sources in the study area. A simple two end-member (terrigenous and marine) mixing model using delta C-13 indicats that 45%-79% of TOC in the Jiaozhou Bay is from the marine source. The environmental changes of the Jiaozhou Bay are recorded by geochemical proxies, which are influenced by the intensive anthropogenic activities (e.g., extensive use of fertilizers, and discharge of sewage) and climate changes (e.g., rainfall).
KeywordOrganic Matter Sources Anthropogenic Activities Environmental Changes Sediments Jiaozhou Bay
DOI10.1007/s13131-017-1076-1
Indexed BySCI
Language英语
WOS IDWOS:000414992900009
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/143039
Collection海洋生态与环境科学重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Kang, Xuming,Song, Jinming,Yuan, Huamao,et al. The sources and composition of organic matter in sediments of the Jiaozhou Bay: implications for environmental changes on a centennial time scale[J]. ACTA OCEANOLOGICA SINICA,2017,36(11):68-78.
APA Kang, Xuming,Song, Jinming,Yuan, Huamao,Li, Xuegang,Li, Ning,&Duan, Liqin.(2017).The sources and composition of organic matter in sediments of the Jiaozhou Bay: implications for environmental changes on a centennial time scale.ACTA OCEANOLOGICA SINICA,36(11),68-78.
MLA Kang, Xuming,et al."The sources and composition of organic matter in sediments of the Jiaozhou Bay: implications for environmental changes on a centennial time scale".ACTA OCEANOLOGICA SINICA 36.11(2017):68-78.
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