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| 1 | Summertime Surface N2O Concentration Observed on Fildes Peninsula Antarctica:Correlation with Total Atmospheric O3 and Solar Activity显示文摘Three-year summertime surface atmospheric N2O concentrations were observed for the first time on the Fildes Peninsula, maritime Antarctica, and the relationships among the N2O concentration, total atmospheric O3 amount, and sunspot number were analyzed. Solar activity had an important effect on surface N2O concentration and total O3 amount, and increases of sunspot number were followed by decreases in the N2O concentration and total O3 amount. A corresponding relationship exists between the N2O concentration and total atmospheric O3, and ozone destruction was preceded by N2O reduction.We propose that the extended solar activity in the Antarctic summer reduces the stratospheric N2O by converting it into NOx, increases the diffusion of N2O from the troposphere to the stratosphere, decreases the surface atmospheric N2O, and depletes O3 via the chemical reaction between O3 and NOx. Our observation results are consistent with the theory of solar activity regarding the formation of the Antarctic O3 hole. | 朱仁斌 孙立广 尹雪斌 刘晓东 邢光熹 | 2004 | Advances in Atmospheric Sciences2004，21，2： | 3 |
| 2 | Atmospheric nitrous oxide observations above the oceanic surface during the first Chinese Arctic Research Expedition显示文摘339 gas samples above oceanic surface were collected on the cruise of 'Xuelong' expeditionary ship and nitrous oxide concentrations were analyzed in the laboratory. Results showed that Atmospheric average N20 concentration was 309 ± 3.8nL/L above the surface of northern Pacific and Arctic ocean. N2O concentrations were significantly different on the northbound and southbound track in the range of the same latitude, 308.0 ± 3.5 nL/L from Shanghai harbor to the Arctic and 311.9 ± 2.5 nL/L from the Arctic to Shanghai harbor. N2O concentration had a greater changing magnitude on the mid- and high-latitude oceanic surface of northern Pacific Ocean than in the other latitudinal ranges. The correlation between the concentrations of the compositions in the aerosol samples and atmospheric N2O showed that continental sources had a great contribution on atmospheric N2 O concentration above the oceanic surface. Atmospheric N2O concentration significantly increased when the expeditionary ship approached Shanghai harbor. The average N2O concentrations were 315.1 ±2.5 nL/L, 307.2 ±1.4 nL/L and 306.2 ±0.7 nL/L, respectively, at Shanghai harbor, at ice stations and at floating ices. The distribution of N2O concentrations was related with air pressure and temperature above the mid- and high-latitude Pacific Ocean. | 朱仁斌 孙立广 谢周清 赵俊琳 | 2003 | Chinese Journal of Polar Science2003，14，2： | 3 |
| 3 | 上海—南极海洋边界层大气CH_4浓度及其δ^(13)C空间分布特征显示文摘在中国第22次南极科学考察期间,用Tedlar气袋采集了'雪龙号'考察船航线上海洋边界层大气样品,在室内分析了样品中CH4浓度及其分子的δ13C值,结果表明:在28.5°N^40°S区域,海洋边界层大气CH4浓度波动较大,峰值较多,平均值为(2.97±1.51)×10-6,明显高于全球大气CH4的平均浓度(约1.8×10-6),这主要与该区域的航迹靠近陆地,受人为源的影响有关;在40°S^69.17°S航迹,远离人类活动区,洋面大气CH4的浓度较稳定,平均浓度值为(1.92±0.14)×10-6,接近于目前全球大气CH4平均浓度.航线上CH4分子的δ13C的变化范围为:-37.49‰^-24.87‰,平均为-34.5±3.0‰.在28.5°N^40°S区域,边界层大气中CH4分子的δ13C值较高且波动较大,表明洋面大气的CH4浓度受到来自富13C的化石燃料、生物质燃烧等人为源的强烈影响;在40°S^69.17°S区域,δ13C值较稳定.海洋边界层大气的CH4浓度分布与大气温度也存在相关性. | 刘雅淑 朱仁斌 徐华 | 2007 | 中国科学技术大学学报2007，37，8： | 2 |
| 4 | Temporal and spatial variations of δ^(15)N and δ^(18)O for atmospheric N_2O above the oceanic surface from Shanghai to Antarctica显示文摘During the 22nd Chinese Antarctic Research Expedition (CHINARE-22), the atmospheric gas samples above the oceanic surface and near the surface were collected on the track for the scientific ship 'Xuelong' and on Millor Peninsula of eastern Antarctica, respectively, using the Tedlar gas bags. Every day the sampling times were 10:00 and 22:00 (local time), respectively. In the laboratory, high-precision measurement of the isotopic compositions for N2O in these gas samples was conducted using Thermo Finnigan MAT-253 Isotopic Mass Spectrometer with a fully automated interface for the pre-GC concen-tration (PreCon) of trace gases. The temporal and spatial variations of δ 15N and δ 18O in atmospheric N2O were analyzed. The mean δ 15N and δ 18O-N2O values above the oceanic surface were (7.21±0.50)‰ and (44.52±0.52)‰, respectively. From 30°N to Antarctica, the δ 15N (6.05‰―7.88‰) linearly increased with the rate of about 0.01‰ with the latitude while the δ 18O (43.05‰―48.78‰) showed a large fluctua-tion. The δ 15N negatively correlated with air temperature and N2O concentration, and slightly positively correlated with δ 18O. The summertime variations of δ 15N and δ 18O-N2O appeared the same trend on Millor Peninsula of eastern Antarctica. They significantly positively correlated with each other and negatively with N2O concentration. The δ 15N and δ 18O-N2O at different sites averaged (7.42±0.35)‰ and (44.69±0.49)‰, respectively, slightly higher than those above the oceanic surface, significantly higher than those of atmospheric N2O in the low-latitude regions of Northern Hemisphere. The predominant factors affecting the spatial variations of δ 15N and δ 18O values were also discussed. The isotopic data given in this study can help to investigate the global and regional N2O budgets. | ZHU RenBin1, LIU YaShu1, XU Hua2, MA Jing2 & SUN LiGuang1 1 Institute of Polar Environment, University of Science and Technology of China, Hefei 230026, China 2 State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210091, China | 2008 | Science China Earth Sciences2008，51，6： | 2 |
| 5 | 上海-南极洋面大气N2O的δ^15N与δ^18O时空变化特征显示文摘在中国第22次南极科学考察期间,采用Tedlar气袋采集了'雪龙号'考察船航线上洋面大气样品以及东南极米洛半岛近地面大气样品(采样时间分别为地方时上午10:00和夜间22:00),在室内通过带有全自动预GC浓缩接口(PreCon)的Thermo Finnigan MAT-253同位素质谱仪,对这些大气样品中N2O的同位素组成进行了高精度地测量;并分析了其δ15N与δ18O空间变化规律.上海-南极洋面大气N2O的δ15N与δ18O平均分别为(7.21±0.50)‰和(44.52±0.52)‰.由30°N往南极随着纬度的变化,δ15N(6.05‰~7.88‰)呈线性增加趋势,增加率为0.01‰/纬度,δ18O(43.05‰~48.78‰)则呈现较大的波动;且δ15N与气温、N2O浓度呈负相关,而与δ18O呈弱的正相关.东南极米洛半岛近地面大气N2O的δ15N与δ18O夏季变化趋势相一致,且二者呈显著正相关,而与N2O浓度呈显著负相关;不同地点大气N2O的δ15N与δ18O平均分别为(7.46±0.39)‰和(44.63±0.45)‰,略高于洋面大气N2O的δ15N与δ18O;而显著高于北半球低纬度大气N2O的δ15N与δ18O值.分析讨论了引起地面大气N2O的δ15N与δ18O空间变化的主导因素.提供了全球大区域洋面大气N2O的同位素资料,有助于定量评估全球与区域大气N2O的净收支. | 朱仁斌 刘雅淑 徐华 马静 孙立广 | 2008 | 中国科学(D辑)2008，38，9： | 2 |
| 6 | 南大洋大气氧化亚氮分布特征显示文摘在执行中国第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。 | 詹力扬 陈立奇 | 2007 | 极地研究2007，19，1： | 2 |
| 7 | Preliminary studies on methane flux from the ornithogenic soils on Xi-sha atoll, South China Sea显示文摘Methane flux from the ornithogenic soils was preliminarily measured by closed chamber method on Xi-sha atoll, South China Sea during March 10 to April 11, 2003 for the first time. The CH4 flux ranged from -226.7 μg/(m2·h) to 226.3 μg/(m2·h) at the observation sites on Dong Island. High atmospheric CH4 consumption was observed from the ornithogenic soils on sunny days. CH4 uptake rates showed the highest value after the midday and they had a strong positive correlation with soil temperatures. Under the same weather conditions, the CH4 fluxes were also observed from the intact and disturbed soils on Yongxing Island. Results showed that the intact soils with natural vegetation also showed high atmospheric CH4 consumption and the average flux was -141.8 μg/(m2·h). However, disturbed soils via anthropogenic reclamation showed CH4 emissions and the average flux was 441.7 μg/(m2·h). Therefore land use changes may have an important effect on the CH4 fluxes from the tropical ornithogenic soils. In addition, different observation sites show a high spatial variation in CH4 fluxes. The wetland in salt marsh showed the CH4 emission on Dong Island, and the dry soil sites all showed high atmospheric CH4 consumption, suggesting that CH4 fluxes were predominantly controlled by soil water regime. The effects of soil chemical properties on CH4 fluxes were also analyzed and discussed in this paper. | ZHU Ren-bin SUN Li-guang ZHAO San-ping XIE Zhou-qing LIU Xiao-dong YIN Xue-bin | 2005 | Journal of Environmental Sciences2005，17，5： | 1 |
| 8 | Monitoring atmospheric nitrous oxide background concentrations at Zhongshan Station,east Antarctica显示文摘At present,continuous observation data for atmospheric nitrous oxide(N_2O) concentrations are still lacking,especially in east Antarctica.In this paper,nitrous oxide background concentrations were measured at Zhongshan Station(69°22′25″S,76°22′14″E),east Antarctica during the period of 2008–2012,and their interannual and seasonal characteristics were analyzed and discussed.The mean N_2O concentration was 321.9 n L/L with the range of 320.5–324.8 n L/L during the five years,and it has been increasing at a rate of 0.29% year-1.Atmospheric N_2O concentrations showed a strong seasonal fluctuation during these five years.The concentrations appeared to follow a downtrend from spring to autumn,and then increased in winter.Generally the highest concentrations occurred in spring.This trend was very similar to that observed at other global observation sites.The overall N_2O concentration at the selected global sites showed an increasing annual trend,and the mean N_2O concentration in the Northern Hemisphere was slightly higher than that in the Southern Hemisphere.Our result could be representative of atmospheric N_2O background levels at the global scale.This study provided valuable data for atmospheric N_2O concentrations in east Antarctica,which is important to study on the relationships between N2 O emissions and climate change. | Wenjuan Ye Lingen Bian Can Wang Renbin Zhu Xiangdong Zheng Minghu Ding | 2016 | Journal of Environmental Sciences2016，28，9： | 1 |
| 9 | Preliminary studies on nitrous oxide emissions from the ornithogenic soils on Xi-sha atoll,South China Sea显示文摘The preliminary measurements of nitrous oxide fluxes from the ornithogenic soils on tropical Xi-sha atoll were made using a closed chamber technique for the first time. N2O fluxes from the ornithogenic soils ranged from 1 8 to 40 3 μg/(m2\5h) on Dong Island and 3 2 to 20 4 μg/(m2·h) on Yongxing Island and their flux averaged 11 0 μg/(m2·h) and 8 3 μg/(m2·h), respectively. N2O fluxes from two wetland sites in salt marsh of Dong Island were approximately one order of magnitude lower than those from the ornithogenic soils and averaged 2 1 μg/(m2·h) and 2 4 μg/(m2·h). The diurnal variation cycle in the fluxes was obtained at the observation sites; the N2O flux increased with the increase in soil temperature. The sudden increase in soil moisture greatly stimulated N2O emission from the ornithogenic soils on Dong Island due to the heavy rainfall. The undisturbed soils showed the lower N2O fluxes and the average was 4 8 μg/(m2·h) and the soils via the reclamation showed the higher N2O fluxes and the average was 16 6 μg/(m2·h) on Yongxing Island, suggesting that the changes of land use have an important effect on N2O fluxes from the ornithogenic soils. In addition, the N2O fluxes at the different sites showed high spatial variations. The fluxes were positively correlated with the concentrations of NO-3, PO 3- 4 and Mn in the soils. The negative correlation between the fluxes and total S concentration in the ornithogenic soils was also found for the first time. Coastal soils or sediments constitute an important source of global atmospheric N2O and the increases in nitrogen loading from seabird guanos will lead to significant increases in the flux of this atmospherically active gas. | ZHURen-bin SUNLi-guang ZHAOSan-ping XIEZhou-qing LIUXiao-dong YINXue-bin | 2005 | Journal of Environmental Sciences2005，17，4： | 1 |
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