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

doi:10.1016/j.marchem.2023.104270

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Determining source-specific terrigenous organic carbon contributions in sediments from the Yellow River estuary, Northeast China: A test of source apportionment models
	Wu, Dinggui 1; Sun, Dayang 1; Tang, Jianhui 2; Sun, Yongge 1
刊名	MARINE CHEMISTRY
	2023-06-20
卷号	253 页码:11
关键词	Terrigenous organic carbon N-alkanes Source apportionment models Surface sediments The Yellow River estuary
ISSN号	0304-4203
DOI	10.1016/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
内容类型	期刊论文
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
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.