Using triple oxygen isotopes and oxygen-argon ratio to quantify ecosystem production in the mixed layer of northern South China Sea slope region

doi:10.1007/s13131-021-1846-7

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	Using triple oxygen isotopes and oxygen-argon ratio to quantify ecosystem production in the mixed layer of northern South China Sea slope region
	Zhu, Zhuoyi 1,2; Wang, Jun 3; Zhang, Guiling 4,5; Liu, Sumei 4,5; Zheng, Shan 6; Sun, Xiaoxia 6; Xu, Dongfeng 3; Zhou, Meng 1
刊名	ACTA OCEANOLOGICA SINICA
	2021-06-01
页码	15
关键词	gross primary production net community production triple oxygen isotopes O-2 Ar air-sea gas flux piston velocity
ISSN号	0253-505X
DOI	10.1007/s13131-021-1846-7
通讯作者	Zhu, Zhuoyi(zhu.zhuoyi@sjtu.edu.cn)
英文摘要	Quantifying the gross and net production is an essential component of carbon cycling and marine ecosystem studies. Triple oxygen isotope measurements and the O-2/Ar ratio are powerful indices in quantifying the gross primary production and net community production of the mixed layer zone, respectively. Although there is a substantial advantage in refining the gas exchange term and water column vertical mixing calibration, application of mixed layer depth history to the gas exchange term and its contribution to reducing indices error are unclear. Therefore, two cruises were conducted in the slope regions of the northern South China Sea in October 2014 (autumn) and June 2015 (spring). Discrete water samples at Station L07 in the upper 150 m depth were collected for the determination of delta O-17, delta O-18, and the O-2/Ar ratio of dissolved gases. Gross oxygen production (GOP) was estimated using the triple oxygen isotopes of the dissolved O-2, and net oxygen production (NOP) was calculated using O-2/Ar ratio and O-2 concentration. The vertical mixing effect in NOP was calibrated via a N2O based approach. GOP for autumn and spring was (169 +/- 23) mmol/(m(2)center dot d) (by O-2) and (189 +/- 26) mmol/(m(2)center dot d) (by O-2), respectively. While NOP was 1.5 mmol/(m(2)center dot d) (by O-2) in autumn and 8.2 mmol/(m(2)center dot d) (by O-2) in spring. Application of mixed layer depth history in the gas flux parametrization reduced up to 9.5% error in the GOP and NOP estimations. A comparison with an independent O-2 budget calculation in the diel observation indicated a 26% overestimation in the current GOP, likely due to the vertical mixing effect. Both GOP and NOP in June were higher than those in October. Potential explanations for this include the occurrence of an eddy process in June, which may have exerted a submesoscale upwelling at the sampling station, and also the markedly higher terrestrial impact in June.
资助项目	National Key Research and Development Programs of China of the Ministry of Science and Technology[2020YFA0608301] ; National Key Research and Development Programs of China of the Ministry of Science and Technology[2014CB441503] ; National Natural Science Foundation of China[41976042] ; National Natural Science Foundation of China[41776122] ; Fundamental Research Funds for the Central Universities ; Taishan Scholars Program of Shandong Province, China
WOS研究方向	Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000656778100001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/170977]
专题	海洋研究所_胶州湾海洋生态系统国家野外研究站
通讯作者	Zhu, Zhuoyi
作者单位	1.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 200030, Peoples R China 2.East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200241, Peoples R China 3.Minist Nat Resources, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Peoples R China 4.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Peoples R China 5.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Natl Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Zhuoyi,Wang, Jun,Zhang, Guiling,et al. Using triple oxygen isotopes and oxygen-argon ratio to quantify ecosystem production in the mixed layer of northern South China Sea slope region[J]. ACTA OCEANOLOGICA SINICA,2021:15.
APA	Zhu, Zhuoyi.,Wang, Jun.,Zhang, Guiling.,Liu, Sumei.,Zheng, Shan.,...&Zhou, Meng.(2021).Using triple oxygen isotopes and oxygen-argon ratio to quantify ecosystem production in the mixed layer of northern South China Sea slope region.ACTA OCEANOLOGICA SINICA,15.
MLA	Zhu, Zhuoyi,et al."Using triple oxygen isotopes and oxygen-argon ratio to quantify ecosystem production in the mixed layer of northern South China Sea slope region".ACTA OCEANOLOGICA SINICA (2021):15.