Key biogeochemical processes and source apportionment of nitrate in the Bohai Sea based on nitrate stable isotopes

doi:10.1016/j.marpolbul.2024.116617

	Key biogeochemical processes and source apportionment of nitrate in the Bohai Sea based on nitrate stable isotopes
	Yu, Kairui 1; Wang, Wentao2,3,4,5 ; Nie, Guangming 1; Yuan, Yongquan2,3,4,5 ; Song, Xiuxian2,3,4,5 ; Yu, Zhiming2,3,4,5
	2024-08-01
发表期刊	MARINE POLLUTION BULLETIN
ISSN	0025-326X
卷号	205 页码:12
通讯作者	Wang, Wentao(wtwang@qdio.ac.cn)
摘要	Excessive nitrate input is one of the primary factors causing nearshore eutrophication. This study applied the nitrate stable isotope techniques to analyse the biogeochemical processes and sources of nitrate in the Bohai Sea (BHS). The results showed that intensive NO3- assimilation probably occurred at surface in summer, while nitrification primarily occurred in the Yellow River diluted water. In autumn, regional assimilation and nitrification were still identified. For avoiding the interference from assimilation, the isotopic fractionations were further calculated as correction data for the quantitative analysis of nitrate sources. The river inputs were identified as the primary source of nitrate in the BHS in summer and autumn, accounting for >50 %, and the atmospheric deposition was the secondary source. This study provides quantitative data for evaluating the significance of river inputs to the nearshore nitrate, which will be beneficial to policy formulation on the BHS eutrophication control.
关键词	Bohai Sea Nitrate stable isotopes Biogeochemical processes Source apportionment SIAR
DOI	10.1016/j.marpolbul.2024.116617
收录类别	SCI
语种	英语
资助项目	Laoshan Laboratory[LSKJ202203901] ; Laoshan Laboratory[LSKJ202203700]
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
WOS类目	Environmental Sciences ; Marine & Freshwater Biology
WOS记录号	WOS:001260245800001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS关键词	CHANGJIANG RIVER ; NITROGEN ; FRACTIONATION ; EUTROPHICATION ; PHYTOPLANKTON ; ASSIMILATION ; NUTRIENTS ; DYNAMICS ; GROWTH ; INPUTS
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/186369
专题	海洋生态与环境科学重点实验室
通讯作者	Wang, Wentao
作者单位	1.Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Opt Elect Sensing & Analyt Chem Life Sci, MOE,State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
通讯作者单位	海洋生态与环境科学重点实验室
推荐引用方式 GB/T 7714	Yu, Kairui,Wang, Wentao,Nie, Guangming,et al. Key biogeochemical processes and source apportionment of nitrate in the Bohai Sea based on nitrate stable isotopes[J]. MARINE POLLUTION BULLETIN,2024,205:12.
APA	Yu, Kairui,Wang, Wentao,Nie, Guangming,Yuan, Yongquan,Song, Xiuxian,&Yu, Zhiming.(2024).Key biogeochemical processes and source apportionment of nitrate in the Bohai Sea based on nitrate stable isotopes.MARINE POLLUTION BULLETIN,205,12.
MLA	Yu, Kairui,et al."Key biogeochemical processes and source apportionment of nitrate in the Bohai Sea based on nitrate stable isotopes".MARINE POLLUTION BULLETIN 205(2024):12.