地学前缘 ›› 2010, Vol. 17 ›› Issue (2): 417-425.

• 论文 • 上一篇    下一篇

大气环境氮同位素示踪及生物监测

肖化云, 刘丛强   

  1. 中国科学院 地球化学研究所 环境地球化学国家重点实验室, 贵州 贵阳 550002
  • 收稿日期:2010-03-02 修回日期:2010-03-10 出版日期:2010-03-15 发布日期:2010-04-05
  • 作者简介:肖化云（1970—）,男,研究员,主要从事大气环境稳定同位素地球化学和植物生态环境学研究。E-mail: xiaohuayun@vip.skleg.cn
  • 基金资助:

    国家自然科学基金项目(40721002,40573006)

Nitrogen isotope as a tracer in atmospheric environment and bioindicators.

 XIAO  Hua-Yun, LIU  Cong-Jiang   

  1. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
  • Received:2010-03-02 Revised:2010-03-10 Online:2010-03-15 Published:2010-04-05

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摘要：

大气中氮的转化、迁移和沉降等大气过程与地表氮的生物地球化学循环密切相关。氮同位素对大气氮源和氮的大气化学过程的定量研究已引起广泛关注。本文对大气不同氮源的同位素特征、氮在大气过程中的同位素分馏机制以及如何定量化大气氮过程的方法进行了简要阐述,并介绍了苔藓氮同位素作为一种新的研究手段在示踪大气氮源和大气氮过程等方面取得的新进展。对国内开展的有关大气氮同位素以及苔藓氮同位素方面的工作进行了重点介绍。

关键词: 氮同位素, 同位素分馏, 氮源, 大气氮沉降, 定量化估算, 苔藓

Abstract:

Atmospheric processes such as transfer, transformation and deposition of nitrogen are closely related to the biogeochemical cycle of nitrogen in the earths surface. Nitrogen isotope as a tracer to determine nitrogen sources and to quantitatively study the atmospheric nitrogen processes is paid close attention to now. This paper briefly described the isotopic characteristics of potential nitrogen sources, the nitrogen isotope fractionation mechanism during atmospheric processes, and the methods of quantitatively studying the atmospheric nitrogen processes. As a new tool used to study nitrogen processes in the atmosphere, the new findings from nitrogen isotope in mosses was also introduced. Detailed introduction to the researches related to nitrogen isotope in the atmosphere and mosses conducted in China was emphasized in this paper.

Key words:  nitrogen isotope, isotope fractionation, nitrogen sources, atmospheric nitrogen deposition, quantitative estimate, mosses

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