Atmospheric deposition as a direct source of particulate organic carbon in region coastal surface seawater: Evidence from stable carbon and nitrogen isotope analysis

doi:10.1016/j.scitotenv.2022.158540

	Atmospheric deposition as a direct source of particulate organic carbon in region coastal surface seawater: Evidence from stable carbon and nitrogen isotope analysis
	Xie, Lei 1,2,3; Gao, Xuelu 1,2,3,4; Liu, Yongliang 1,2; Yang, Bo 5; Yuan, Huamao 3,4,6,7; Li, Xuegang 3,4,6,7; Song, Jinming3,4,6,7 ; Zhao, Jianmin 1,2,4; Xing, Qianguo 1,2,4
	2023
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	854 页码:14
通讯作者	Gao, Xuelu(xlgao@yic.ac.cn)
摘要	To assess the source characteristics of coastal aerosols and evaluate the contribution of atmospheric deposition to particulate organic matter in surface seawater, total suspended particulates (TSP) were collected at a shore-based site on the south coast of North Yellow Sea from December 2019 through November 2020. The samples were analyzed for total organic carbon (TOC) and nitrogen (TN) as well as stable carbon and nitrogen isotope (delta C-13 and delta N-15). The results showed that the annual mean concentrations of TOC and TN were 5.36 +/- 4.74 and 5.12 +/- 6.52 mu g m(-3), respectively. delta C-13 fluctuated between -25.1 %o and -19.2 %o with an annual mean of -24.0 +/- 1.0 %o and a significant seasonal variation (P < 0.05) characterizing by the enrichment in winter (-23.4 +/- 0.6 %o) compared to other seasons, which was probably related to the massive coal combustion. Besides, delta N-15 ranged from 7.9 %o to 21.1 %o with an annual mean of 12.5 +/- 2.9 %o and a less pronounced seasonal pattern (P = 0.23). The Bayesian isotope-mixing model showed that, annually, the most important source of TSP was biogenic and biomass source (55.5 +/- 10.8 %), followed by fossil fuel combustion (31.9 +/- 9.0 %), while the marine contribution was less (12.6 +/- 2.3 %). For TOC and TN, the dominated sources were fossil fuel combustion (47.7 +/- 3.4 %) and biogenic and biomass source (57.3 +/- 11.7 %), respectively. Furthermore, the model results indicated that the contribution of atmospheric deposition to suspended particulate matter in surface seawater was 18.0 +/- 11.0 %,17.1 +/- 6.7 % and 10.2 +/- 2.0 % in autumn, spring and summer, respectively. For particulate organic carbon in surface seawater, the contribution of atmospheric deposition was 35.2 +/- 3.5 % in spring, highlighting the huge impact of atmospheric deposition on particulate carbon cycling in coastal waters.
关键词	Source characteristics Coastal waters Total suspended particulate Stable carbon and nitrogen isotope Bayesian isotope-mixing models
DOI	10.1016/j.scitotenv.2022.158540
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050303]
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000862764700005
出版者	ELSEVIER
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/180757
专题	海洋生态与环境科学重点实验室
通讯作者	Gao, Xuelu
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Zone Environm Proc & Ecol Reme, Yantai 264003, Shandong, Peoples R China 2.Shandong Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China 5.Shenzhen Inst Guangdong Ocean Univ, Shenzhen 518114, Guangdong, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China 7.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Ecol & Environm Sci, Qingdao 266237, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Xie, Lei,Gao, Xuelu,Liu, Yongliang,et al. Atmospheric deposition as a direct source of particulate organic carbon in region coastal surface seawater: Evidence from stable carbon and nitrogen isotope analysis[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,854:14.
APA	Xie, Lei.,Gao, Xuelu.,Liu, Yongliang.,Yang, Bo.,Yuan, Huamao.,...&Xing, Qianguo.(2023).Atmospheric deposition as a direct source of particulate organic carbon in region coastal surface seawater: Evidence from stable carbon and nitrogen isotope analysis.SCIENCE OF THE TOTAL ENVIRONMENT,854,14.
MLA	Xie, Lei,et al."Atmospheric deposition as a direct source of particulate organic carbon in region coastal surface seawater: Evidence from stable carbon and nitrogen isotope analysis".SCIENCE OF THE TOTAL ENVIRONMENT 854(2023):14.

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