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Determining source-specific terrigenous organic carbon contributions in sediments from the Yellow River estuary, Northeast China: A test of source apportionment models

文献类型：期刊论文

作者Wu, Dinggui1; Sun, Dayang1; Tang, Jianhui2; Sun, Yongge1
刊名MARINE CHEMISTRY
出版日期2023-06-20
卷号253页码:11
ISSN号0304-4203
关键词Terrigenous organic carbon N-alkanes Source apportionment models Surface sediments The Yellow River estuary
DOI10.1016/j.marchem.2023.104270
通讯作者Sun, Yongge(ygsun@zju.edu.cn)
英文摘要Molecular organic geochemistry has been used effectively to determine terrigenous organic carbon (OC) contributions from different sources in modern sediments. However, mathematic modelling using source-specific parameters could be a potentially simple-effective approach to identify the terrigenous OC signals. In this study, the Yellow River estuary was chosen to probe whether source apportionment models can determine source-specific OC contributions. The end-member mixing model suggests that terrigenous OC contributed 57.0% +/- 10.2% to the sedimentary OC. n-Alkane distributions were used to perform Unmix and positive matrix factorization (PMF) to separate terrigenous and autochthonous OC into more specific sources. PMF modelling delineates the contributions of high terrigenous plants, fossil OC, macrophyte-sourced OC, and bacterial and algal-sourced OC as 22.9% +/- 14.3%, 26.2% +/- 19.4%, 26.5% +/- 19.3%, and 24.4% +/- 17.1%, respectively. In assessing terrigenous contributions, PMF results (48.7% +/- 13.5%) almost agrees with the end-member mixing model (57.0% +/- 10.2%), consistent and comparable with previously published data (similar to 50%), while Unmix (73.9% +/- 18.7%) is significantly overestimated. Interestingly, macrophyte-sourced OC from coastal wetland identified by PMF was less investigated previously and should call attention in the future study. Consequently, modelling results match well with previously published data, suggesting that mathematic modelling can be an effective approach to quantitatively evaluate source-specific terrigenous OC contributions to estuary sediments and other complex aqua-land systems. However, caution must be taken in respect to the modelling uncertainty, which could be mainly induced by sample number, diversity, and robust interpretation on chemical parameters.
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; SAN-FRANCISCO BAY ; STABLE CARBON ; N-ALKANES ; ISOTOPIC COMPOSITION ; SURFACE SEDIMENTS ; MATTER SOURCE ; BOHAI SEA ; MOLECULAR-DISTRIBUTION ; RISK-ASSESSMENT
WOS研究方向Chemistry ; Oceanography
语种英语
WOS记录号WOS:001031996700001
资助机构National Natural Science Foundation of China
源URL[http://ir.yic.ac.cn/handle/133337/33393]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
烟台海岸带研究所_近岸生态与环境实验室
通讯作者Sun, Yongge
作者单位1.Zhejiang Univ, Sch Earth Sci, Organ Geochem Unit, Key Lab Geosci Big Data & Deep Resource Zhejiang P, Hangzhou 310027, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Dinggui,Sun, Dayang,Tang, Jianhui,et al. Determining source-specific terrigenous organic carbon contributions in sediments from the Yellow River estuary, Northeast China: A test of source apportionment models[J]. MARINE CHEMISTRY,2023,253:11.
APA Wu, Dinggui,Sun, Dayang,Tang, Jianhui,&Sun, Yongge.(2023).Determining source-specific terrigenous organic carbon contributions in sediments from the Yellow River estuary, Northeast China: A test of source apportionment models.MARINE CHEMISTRY,253,11.
MLA Wu, Dinggui,et al."Determining source-specific terrigenous organic carbon contributions in sediments from the Yellow River estuary, Northeast China: A test of source apportionment models".MARINE CHEMISTRY 253(2023):11.

入库方式： OAI收割

来源：烟台海岸带研究所

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