Geochemistry of organic carbon in surface sediments of a summer hypoxic region in the coastal waters of northern Shandong Peninsula
Yang, Bo; Gao, Xuelu; Xing, Qianguo
Source PublicationCONTINENTAL SHELF RESEARCH
ISSN0278-4343
2018-12-01
Volume171Pages:113-125
KeywordSediment analysis Sedimentary organic matter Stable carbon and nitrogen isotopes Coastal environment Spatiotemporal distribution Shelf sea
MOST Discipline CatalogueOceanography
DOI10.1016/j.csr.2018.10.015
Contribution Rank[Yang, Bo; Gao, Xuelu; Xing, Qianguo] Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, 17 Chunhui Rd, Yantai 264003, Shandong, Peoples R China; [Yang, Bo; Gao, Xuelu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Department海岸带信息集成与综合管理实验室
AbstractThe geochemistry of sedimentary organic matter (SOM) in coastal areas is complex due to its multiple sources and intricate hydrological features. In this study, the biogenic element concentrations and stable carbon (delta C-13) and nitrogen (delta N-15) isotopic compositions in the coastal surface sediments of northern Shandong Peninsula, along with some parameters related to water quality, were analyzed to investigate the temporal-spatial variations in SOM and the processes that control its distribution. The results revealed that marine autogenous organic matter is a major contributor to SOM, accounting for 75.4 +/- 3.3%, 60.8 +/- 6.6% and 67.4 +/- 10.3% in August and November 2015 and March 2016, respectively. In summer, TOC and TN concentrations were significantly higher than those in autumn and spring. The relatively high abundances of SOM were found in the offshore areas in summer and spring, which was contrary to those in autumn. Riverine discharge, nutrients, primary productivity and dissolved oxygen (DO) dynamics could all influence the composition and contents of SOM in different seasons. In summer, high primary productivity and hypoxia condition led to high SOM values. In comparison, SOM contents were relatively low due to sufficient DO in bottom water in autumn and spring. Dissolved nutrients in seawater could affect the accumulation of autogenous organic matter by impacting upon primary production. In summer, nitrate in surface water had the most obvious effects on autogenous organic carbon (AOC) and may be the principal factor of limiting the growth of phytoplankton. In autumn, nitrate as well as dissolved silicate had more effects on AOC storage. However, phosphate had the most obvious influence on AOC storage in spring.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordHUANGHE YELLOW-RIVER ; OXYGEN MINIMUM ZONE ; C/N RATIOS ; SEASONAL-VARIATIONS ; MARINE-SEDIMENTS ; ENHANCED PRESERVATION ; ISOTOPIC COMPOSITION ; PARTICULATE MATTER ; CONTINENTAL-SHELF ; TROPICAL ESTUARY
WOS Research AreaOceanography
WOS IDWOS:000453493900010
Funding OrganizationAoshan Technology Innovation Program of the Qingdao National Laboratory for Marine Science and Technology [2016ASKJ02-4] ; National Natural Science Foundation of China [U1606404] ; Natural Science Foundation of Shandong Province [U1606404] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11020702]
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Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/24593
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带信息集成与战略规划研究中心
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, 17 Chunhui Rd, Yantai 264003, Shandong, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yang, Bo,Gao, Xuelu,Xing, Qianguo. Geochemistry of organic carbon in surface sediments of a summer hypoxic region in the coastal waters of northern Shandong Peninsula[J]. CONTINENTAL SHELF RESEARCH,2018,171:113-125.
APA Yang, Bo,Gao, Xuelu,&Xing, Qianguo.(2018).Geochemistry of organic carbon in surface sediments of a summer hypoxic region in the coastal waters of northern Shandong Peninsula.CONTINENTAL SHELF RESEARCH,171,113-125.
MLA Yang, Bo,et al."Geochemistry of organic carbon in surface sediments of a summer hypoxic region in the coastal waters of northern Shandong Peninsula".CONTINENTAL SHELF RESEARCH 171(2018):113-125.
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