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Acta Oceanologica Sinica 2015年第6期34卷 34-41页

作者： LI Yuhong zhan liyang zhanG Jiexia CHEN Liqi Key Laboratory of Global Change and Marine-Atmospheric Chemistry State Oceanic Administration Third Institute of Oceanography State Oceanic Administration

A new off-axis integrated cavity output spectroscopy （ICOS） is coupled to Weiss equilibrator for continuous high- resolution dissolved methane measurement in the surface ocean. The time constant for the equilibrator in freshwater at room temperature is determined via dis-equilibration and re-equilibration experiments. The constant for methane is about 40 min. The system is calibrated using a standard gas of 3.980×10-6, and the precision of the ICOS for methane is 0.07%. This system is equipped onboard to measure the spatial distribution in methane concentrations of South Yellow Sea （SYS） along the cruise track from Shanghai to Qingdao. Result shows that the methane concentration varies from 2.79 to 36.36 nmol/L, reveals a significant pattern of methane source in SYS, and a distinct decreasing trend from south to north. The peak value occurs at the coast area outside mouth of the Changjiang River, likely to be affected by the Changjiang diluted water mass dissolving a large amount of rich in methane. Moreover, all the surface waters are oversaturated, air-to-sea fluxes range from 98.59 to 5 485.35 μmol/（m2·d）（average value （1 169.74±1 398.46） μmol/（m2·d））, indicating a source region for methane to the atmosphere. Key words： methane, equilibrator, off-axis integrated cavity output spectroscopy （ICOS）, South Yellow Sea

关键词： methane equilibrator off-axis integrated cavity output spectroscopy (ICOS) South Yellow Sea

Differences in nitrous oxide distribution patterns between the Bering Sea basin and Indian Sector of the Southern Ocean

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Acta Oceanologica Sinica 2014年第6期33卷 9-19页

作者： CHEN Liqi zhanG Jiexia zhan liyang LI Yuhong SUN Heng College of Ocean and Earth Science Xiamen University Key Laboratory of Global Change and Marine-Atmospheric Chemistry of State Oceanic Administration Third Institute of OceanographyState Oceanic Administration

Nitrous oxide （N2O） distribution patterns in the Bering Sea basin （BSB） and Indian Sector of the Southern Ocean （ISSO） were described and compared. In both sites, the waters were divided into four layers： surface layer, subsurface layer, N2O maximum layer, and deep water. Simulations were made to find out the most important factors that regulate the N2O distribution patterns in different layers of both sites. The results showed that in the surface water, N2O was more understaturated in the ISSO than the BSB. This phenom- enon in the surface water of ISSO may result from ice melt water intrusion and northeastward transport of the Antarctic surface water. Results of the rough estimation of air-sea fluxes during the expedition were （-0.34±0.07）-（-0.64±0.13） μmol/（m2·d） and （-1.47±0.42）-（-1.77±0.51） μmol/（m-2·d） for the BSB and the ISSO, respectively. Strongly stratified surface layer and temperature minimum layer restricted exchange across the thermocline. The N2O maximum existed in higher concentration and deeper in the BSB than the ISSO, but their contribution to the upper layer by eddy diffusions was negligible. In deep waters, a concentration difference of 5 nmol/L N2O between these two sites was found, which suggested that N2O production occurred during thermohaline circulation. N2O may be a useful tracer to study important large-scale hydrographic processes.

关键词： nitrous oxide Bering Sea basin Southern Ocean distribution

Nitrous oxide research progress in polar and sub-polar oceans

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Advances in Polar Science 2020年第4期31卷 241-247页

作者： zhan liyang zhanG Jiexia LI Yuhong&WU Man Key Laboratory of Global Change and Marine-Atmospheric Chemistry Third Institute of OceanographyMinistry of Natural ResourcesXiamen 361005China

N2O gas depletes ozone and has a powerful greenhouse *** are among the most important N2O sources and have been the subject of extensive *** oceans are important regions for deep water formation and global-scale thermohaline ***,these water bodies play an important role in the N2O budget,however,these regions were not well *** review of previously published studies and data on polar oceans,including both the Arctic Ocean and Southern Ocean,describes the distribution pattern of N2O and possible regulating mechanism of these distribution patterns and shows that the Arctic Ocean and Southern Ocean both represent source and sink regions,suggesting that the source/sink characteristics of the Arctic and Southern oceans and their strengths need further *** related to N2O circulation in polar oceans were proposed,and future work is suggested.

关键词： nitrous oxide source/sink Arctic Ocean Southern Ocean Prydz Bay

Concentration maxima of methane in the bottom waters over the Chukchi Sea shelf:implication of its biogenic source

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Advances in Polar Science 2022年第3期33卷 235-243页

作者： LI Yuhong zhanG Jiexia YE Wangwang JIN Haiyan ZHUANG Yanpei zhan liyang Key Laboratory of Global Change and Marine-Atmospheric Chemistry(GCMAC)of Ministry of Natural Resources(MNR) Third Institute of Oceanography(TIO)MNRXiamen 361005China Laboratory of Marine Ecosystem and Biogeochemistry Second Institute of OceanographyMNRHangzhou 310012China Polar and Marine Research Institute Jimei UniversityXiamen 361021China

Knowledge about the distribution of CH_(4)remains insufficient due to the scarcity of data in the Arctic *** conducted shipboard observations over the Chukchi Sea shelf(CSS)in the western Arctic Ocean in September 2012 to obtain the distribution and source characteristics of dissolved CH_(4)in *** oceanographic data indicated that a salinity gradient generated a pronounced pycnocline at depths of 20-30 *** vertical diffusion of biogenic elements was restricted,and these elements were trapped in the bottom ***,high CH_(4)concentrations were measured below the pycnocline,and low CH_(4)concentrations were observed in the surface *** maximum concentrations of nutrients simultaneously occurred in the dense and cold bottom waters,and significant correlations were observed between CH_(4)and SiO_(3)^(2-),PO_(4)^(3-),NO_(2)^(-),and NH_(4)^(+)(p<0.01,n=44).These results suggest that the production of CH_(4)in the CSS has a similar trend as that of nutrient regeneration and is probably associated with the degradation of organic *** high primary productivity and high concentration of organic matter support the formation of biogenic CH_(4)in the CSS and the subsequent release of CH_(4)to the water column.

关键词： Chukchi Sea shelf methane sources nutrient organic carbon organic matter

Equilibrator-based measurements of dissolved methane in the surface ocean using an integrated cavity output laser absorption spectrometer

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Equilibrator-based measurements of dissolved methane in the ...

Multiple processes affecting surface seawater N_2O satura-tion anomalies in tropical oceans and Prydz Bay, Antarc-tica

福建省海洋学会2016年学术年会

A new off-axis integrated cavity output spectroscopy(ICOS) is coupled to Weiss equilibrator for continuous high-resolution dissolved methane measurement in the surface *** time constant for the equilibrator in freshwater at room temperature is determined via dis-equilibration and re-equilibration *** constant for methane is about 40 *** system is calibrated using a standard gas of 3.980×10,and the precision of the ICOS for methane is 0.07%.This system is equipped onboard to measure the spatial distribution in methane concentrations of South Yellow Sea(SYS) along the cruise track from Shanghai to *** shows that the methane concentration varies from 2.79 to 36.36 nmol/L,reveals a significant pattern of methane source in SYS,and a distinct decreasing trend from south to *** peak value occurs at the coast area outside mouth of the Changjiang River,likely to be affected by the Changjiang diluted water mass dissolving a large amount of rich in ***,all the surface waters are oversaturated,air-to-sea fluxes range from 98.59 to 5 485.35μmol/(m·d)(average value 1 169.74=1=1 398.46 μmol/(m·d)),indicating a source region for methane to the atmosphere.

关键词： methane,equilibrator off-axis integrated cavity output spectroscopy(ICOS) the South Yellow Sea

来源： cnki会议评论

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Advances in Polar Science 2012年第2期23卷 87-94页

作者： CHEN Liqi zhan liyang XU Suqing zhanG Jiexia zhanG Yuanhui XU Guojie Key Laboratory of Global Change and Marine-Atmospheric Chemistry State Oceanic Administration(SOA)Xiamen 361005China Third Institute of Oceanography SOAXiamen 361005China

We analyzed the N20 content of surface seawater sampled from Prydz Bay, Antarctica, on a cruise track between 30°S and 30°N during the twenty-second Chinese National Antarctic Research Expedition during austral summer, 2006. The surface water showed an average pN20 value of 311.9a：7.6 nL.L-1 （14.1：t：0.4 nmol-Ll）, which was slightly undersaturated. The air-sea N2O flux in the region was -0.3±0.8 ***,dl; howeveh N20 in the surface water was oversaturated in most stations along the cruise track. Saturation anomalies were greater than 10%, with a maximum of 54.7% being observed at the Eqaator, followed by 31% at 10°N in the Sulu Sea. The air-sea fluxes at these locations were 12.4 and 4 μmol-mLd-1, respectively. Overall, the results indicated that surface water in Prydz Bay was near equilibrium with atmospheric N20, and that ocean waters in lower latitudes acted as a N20 source. Physical processes such as stratification, ice-melt water dilution, and solar radiation dominate the factors leading to N20 saturation of surface water of Prydz Bay, while biological production and upwelling are primarily responsible for the N20 oversaturation of surface water observed in subtropical and tropical regions along the cruise track.

关键词： dissolved N20 saturation anomalies tropic subtropic Prydz Bay

基于结构方程模型的快递包装绿色回收研究--以苏州大学为例

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物流技术 2023年第4期42卷 71-78,102页

作者：占李洋苏州大学政治与公共管理学院江苏苏州215031

“双碳”政策背景下,如何维衡“电商经济发展”与“绿色低碳发展”成为亟待解决的问题。以苏州大学为切入点,基于计划行为(TPB)与刺激机体行为(S-O-R)理论,从高校群体参与回收行为视角出发,构建高校学生参与快递包装回收行为与意愿的结... 详细信息

“双碳”政策背景下,如何维衡“电商经济发展”与“绿色低碳发展”成为亟待解决的问题。以苏州大学为切入点,基于计划行为(TPB)与刺激机体行为(S-O-R)理论,从高校群体参与回收行为视角出发,构建高校学生参与快递包装回收行为与意愿的结构方程模型。运用SPSS26.0与AMOS26.0统计分析软件,借助结构方程对有效样本数据展开实证分析,探究与验证影响苏州大学学生参与快递包装回收的影响因素。实证结果表明,强制规范通过整体动机影响行为意向进而促进实际行为,意识导向与发展安全通过行为意向影响实际行为,条件设施直接对实际行为产生显著影响。最后依据实证分析结果提出相应的对策建议。

关键词：快递包装回收绿色发展结构方程模型回收行为与意愿

维普期刊数据库博看期刊

Advances in Chinese and international biogeochemistry research in the western Arctic Ocean: a review

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Advances in Polar Science 2017年第4期28卷 231-244页

作者： CHEN Jianfang Alba Marina COBO-VIVEROS JIN Haiyan CHEN Liqi CHEN Min LI Zhongqiao ZHUANG Yanpei zhan liyang GAO Zhongyong REN Jian Laboratory of Marine Ecosystem and Biogeochemistry of SOA Second Institute of Oceanography State Oceanic Administration (SOA) Key Laboratory of Global Change and Marine-Atmospheric Chemistry of SOA Third Institute of Oceanography SOA College of Ocean and Earth Sciences Xiamen University

Over the past decades, the Arctic Ocean has experienced rapid warming under climate change, which has dramatically altered its physical and biogeochemical properties. Reduction in the sea-ice cover is one of the most important driving forces of biogeochemical changes in the Arctic Ocean. Between 1999 and 2016, seven Chinese National Arctic Research Expeditions have taken place in the Bering and Chukchi seas, allowing assessment of the biogeochemical response of the western Arctic Ocean to global warming. Herein, we summarize advances in Chinese and international marine biogeochemistry research in the western Arctic Ocean, reviewing results from the Chinese expeditions and highlighting future trends of biogeochemistry in the Pacific Arctic region. The findings reported in this paper contribute towards a better understanding of water masses, greenhouse gases, nutrients, ocean acidification, and organic carbon export and burial processes in this region.

关键词： Arctic Ocean biogeochemistry fresh water input nutrients phytoplankton organic carbon greenhouse gases ocean acidification

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南大洋大气氧化亚氮分布特征

极地研究 2007年第1期19卷 49-60页

作者：詹力扬陈立奇国家海洋局海洋-大气化学与全球变化重点实验室

在执行中国第21次南极科学考察任务期间,于2004年11月15日至2005年2月2日在南大洋(澳大利亚以南以及中山站和长城站之间环绕南极海域)航线上采集大气氧化亚氮样品,并带回陆地实验室分析。结果显示,大气氧化亚氮浓度由澳大利亚至中山站... 详细信息

在执行中国第21次南极科学考察任务期间,于2004年11月15日至2005年2月2日在南大洋(澳大利亚以南以及中山站和长城站之间环绕南极海域)航线上采集大气氧化亚氮样品,并带回陆地实验室分析。结果显示,大气氧化亚氮浓度由澳大利亚至中山站航段的(309.6±1.6)nL/L上升至环绕南极冰边缘海区航段的(320.0±1.2)nL/L。这种南大洋大气中氧化亚氮浓度随纬度升高而升高的特征,可能与洋流作用,季节性海冰融化、生物作用以及近岸等的影响因素有关。

关键词：氧化亚氮洋流海冰变化生物活动南大洋

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北冰洋CH_4研究进展

地球科学进展 2014年第12期29卷 1355-1361页

作者：李玉红詹力扬陈立奇国家海洋局海洋-大气化学与全球变化重点实验室国家海洋局第三海洋研究所福建厦门361005

甲烷（CH4）是一种重要的温室气体,工业革命以来,大气中CH4浓度已增长了2～3倍。北冰洋沿岸冻土地带和冰川地质区域下埋藏了巨量的CH4储量,在全球气候变化背景下,北冰洋快速增长的CH4释放通量和可能产生的后果引起了人们的广泛关注。综... 详细信息

甲烷（CH4）是一种重要的温室气体,工业革命以来,大气中CH4浓度已增长了2～3倍。北冰洋沿岸冻土地带和冰川地质区域下埋藏了巨量的CH4储量,在全球气候变化背景下,北冰洋快速增长的CH4释放通量和可能产生的后果引起了人们的广泛关注。综述了北冰洋CH4的研究现状,着重介绍了北冰洋CH4的分布特征、通量及其生物地球化学行为,最后探讨了该研究领域中存在的问题。

关键词：溶解甲烷分布通量生物地球化学行为北冰洋