Using triple oxygen isotopes and oxygen-argon ratio to quantify ecosystem production in the mixed layer of northern South China Sea slope region
文献类型：CNKI期刊论文
| 作者 | Zhuoyi Zhu; Jun Wang; Guiling Zhang; Sumei Liu; Shan Zheng; Xiaoxia Sun ; Dongfeng Xu; Meng Zhou
|
| 发表日期 | 2021-06-15 |
| 出处 | Acta Oceanologica Sinica
 |
| 关键词 | gross primary production net community production triple oxygen isotopes O_2/Ar air-sea gas flux piston velocity |
| 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 δ~(17)0,δ~(18)O,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 N_2O based approach.GOP for autumn and spring was(169±23) mmol/(m~2·d)(by O_2) and(189±26) mmol/(m~2·d)(by O_2),respectively.While NOP was 1.5 mmol/(m~2·d)(by O_2) in autumn and 8.2 mmol/(m~2·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 a26% 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. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | The National Key Research and Development Programs of China of the Ministry of Science and Technology under contract Nos 2020YFA0608301 and 2014CB441503 ; the National Natural Science Foundation of China under contract Nos 41976042 and 41776122 ; the Fundamental Research Funds for the Central Universities ; the Taishan Scholars Program of Shandong Province,China |
| 卷 | v.40期:06页:5-19 |
| 语种 | 英文; |
| 分类号 | Q178.53 |
| ISSN号 | 0253-505X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/187748]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.LaboratoryforMarineEcologyandEnvironmentalScience,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 2.JiaozhouBayNationalMarineEcosystemResearchStation,InstituteofOceanology,ChineseAcademyofSciences 3.StateKeyLaboratoryofEstuarineandCoastalResearch,EastChinaNormalUniversity 4.StateKeyLaboratoryofSatelliteOceanEnvironmentDynamics,SecondInstituteofOceanography,MinistryofNaturalResources 5.SchoolofOceanography,ShanghaiJiaoTongUniversity 6.KeyLaboratoryofMarineChemistryTheoryandTechnologyofMinistryofEducation,OceanUniversityofChina |
| 推荐引用方式 GB/T 7714 | Zhuoyi Zhu,Jun Wang,Guiling Zhang,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. 2021. |
入库方式： OAI收割
来源：海洋研究所
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