气候变化领域集成服务门户(CCPortal): Nitrate processing traced by nitrate dual isotopic composition in the early spring in the Changjiang (Yangtze River) Estuary and adjacent shelf areas

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DOI	10.1016/j.marpolbul.2020.111699
	Nitrate processing traced by nitrate dual isotopic composition in the early spring in the Changjiang (Yangtze River) Estuary and adjacent shelf areas
	Zhong X.; Yan M.; Ning X.; Yan Z.; Xin Y.
发表日期	2020
ISSN	0025326X
卷号	161
英文摘要	Nitrate is the major chemical form of N-nutrient to sustain primary production in Changjiang Estuary and adjacent seawaters. We employed δ15N-NO3− and δ18O-NO3− to constrain the source, cycling, and sink of nitrate in early spring. Both δ15N-NO3− and δ18O-NO3− differentiate significantly among Changjiang Diluted Water (CDW), Yellow Sea Coastal Current (YSCC), and Taiwan Warm Current (TWC). In coastal areas, nitrate distribution and its isotopes are mainly affected by Changjiang inputs. Chemical fertilizers and sewage & manure originated nitrate jointly contribute the most nitrate in CDW. In offshore areas, nitrification contributes 44 ± 21% of the nitrate in YSCC and 17 ± 16% in TWC; assimilation is the dominant process to remove nitrate in TWC (35 ± 16%). Overall, nitrification and assimilation are the key nitrate cycling processes in early spring and co-shape the offshore distribution pattern of nitrate and its dual isotopes. © 2020 Elsevier Ltd
英文关键词	Changjiang Estuary; Dual isotopes; Nitrate; Nitrification; SIAR
语种	英语
scopus关键词	Charge density waves; Fertilizers; Isotopes; Nitrification; Offshore oil well production; Sewage; Springs (components); Changjiang Estuary; Chemical fertilizers; Coastal currents; Distribution patterns; Dominant process; Isotopic composition; Nitrate distribution; Primary production; Nitrates; concentration (composition); fertilizer application; isotopic composition; nitrate; nitrification; primary production; trace element; China; Yangtze River
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148479
作者单位	Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Ministry of Education, Qingdao, 266100, China; Institute of Marine Chemistry, Ocean University of China, Qingdao, 266100, China; Institute for Advanced Ocean Study, Ocean University of China, Ministry of Education, Qingdao, 266100, China; School of Oceanography, Shanghai Jiaotong University, Shanghai, 200030, China
推荐引用方式 GB/T 7714	Zhong X.,Yan M.,Ning X.,et al. Nitrate processing traced by nitrate dual isotopic composition in the early spring in the Changjiang (Yangtze River) Estuary and adjacent shelf areas[J],2020,161.
APA	Zhong X.,Yan M.,Ning X.,Yan Z.,&Xin Y..(2020).Nitrate processing traced by nitrate dual isotopic composition in the early spring in the Changjiang (Yangtze River) Estuary and adjacent shelf areas.Marine Pollution Bulletin,161.
MLA	Zhong X.,et al."Nitrate processing traced by nitrate dual isotopic composition in the early spring in the Changjiang (Yangtze River) Estuary and adjacent shelf areas".Marine Pollution Bulletin 161(2020).