| 水汽源地和局地蒸发对大气降水氢氧稳定同位素组分的影响 |
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| 引用本文： | 胡勇博,肖薇,钱雨妃,刘强,谢成玉,张秀芳,张文庆,温学发,刘寿东,李旭辉.水汽源地和局地蒸发对大气降水氢氧稳定同位素组分的影响[J].环境科学,2019,40(2):573-581. |
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| 作者姓名： | 胡勇博 肖薇 钱雨妃 刘强 谢成玉 张秀芳 张文庆 温学发 刘寿东 李旭辉 |
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| 作者单位： | 南京信息工程大学大气环境中心,南京,210044;南京信息工程大学大气环境中心, 南京 210044;南京信息工程大学江苏省大气环境与装备技术协同创新中心,南京 210044;中国科学院地理科学与资源研究生态系统网络观测与模拟重点实验室,北京,100101 |
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| 基金项目： | 国家自然科学基金项目（41475141，41505005，41575147）；江苏省高校优势学科建设工程项目（PAPD）；教育部长江学者和创新团队发展计划项目（PCSIRT） |
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| 摘 要： | 降水氢氧稳定同位素组分是一种良好的示踪剂,对水汽循环的研究有重要意义.本研究基于2016年在南京、溧阳、宜兴和东山这4个站点按降水事件采集的降水样品,测定了降水HDO和H_2~(18)O组分,分析了降水HDO、H_2~(18)O组分以及过量氘的时间变化特征;探讨了水汽源地和局地蒸发对降水稳定同位素组分的影响.结果表明:(1)冬夏季风期间水汽源地的差异使4个站点降水HDO、H_2~(18)O组分及过量氘有明显的季节变化,主要表现为HDO和H_2~(18)O组分夏季风期间贫化,冬季风期间富集;过量氘夏季风期间小于冬季风期间;(2)夏季风期间,太湖蒸发补给使下游地区的降水过量氘变大,局地大气降水线方程的截距变高;冬季风期间,局地蒸发对降水同位素影响很小,降水HDO、H_2~(18)O组分以及过量氘的空间变化不明显;(3) 4个站点局地大气降水线方程的斜率和截距均较高,原因可能是冬夏季风期间的降水水汽来源的差异和冬季风期间水汽再循环过程的影响.
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| 关 键 词： | 降水 氢氧同位素 过量氘 大气降水线 水汽源地 局地蒸发 |
| 收稿时间： | 2018/5/28 0:00:00 |
| 修稿时间： | 2018/8/14 0:00:00 |
Effects of Water Vapor Source and Local Evaporation on the Stable Hydrogen and Oxygen Isotopic Compositions of Precipitation |
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| HU Yong-bo,XIAO Wei,QIAN Yu-fei,LIU Qiang,XIE Cheng-yu,ZHANG Xiu-fang,ZHANG Wen-qing,WEN Xue-f,LIU Shou-dong and LEE Xu-hui.Effects of Water Vapor Source and Local Evaporation on the Stable Hydrogen and Oxygen Isotopic Compositions of Precipitation[J].Chinese Journal of Environmental Science,2019,40(2):573-581. |
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| Authors: | HU Yong-bo XIAO Wei QIAN Yu-fei LIU Qiang XIE Cheng-yu ZHANG Xiu-fang ZHANG Wen-qing WEN Xue-f LIU Shou-dong and LEE Xu-hui |
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| Institution: | Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China,Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China;Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET), Nanjing University of Information Science and Technology, Nanjing 210044, China,Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China,Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China,Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China,Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China,Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China,Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China,Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China;Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET), Nanjing University of Information Science and Technology, Nanjing 210044, China and Yale-NUIST Center on Atmospheric Environment, Nanjing University of Information Science and Technology, Nanjing 210044, China |
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| Abstract: | |
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| Keywords: | precipitation hydrogen and oxygen stable isotopic compositions deuterium-excess local meteoric water line water vapor source local evaporation |
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