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地球科学进展  2011, Vol. 26 Issue (11): 1225-1233    DOI: 10.11867/j.issn.1001-8166.2011.11.1225
全球变化研究     
全球碳循环研究中的δ13C方法及其进展
陈中笑,赵琦
南京信息工程大学省部共建气象灾害重点实验室,江苏南京210044
δ13C Methods and Its Progress in the Study of Global Carbon Cycle
Chen Zhongxiao, Zhao Qi
Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology,Nanjing210044, China
 全文: PDF(1402 KB)  
摘要:

随着分析技术的进步,δ13C观测在全球碳循环研究中越来越受到重视。在讨论关于碳循环中δ13C的Suess效应、分布特征和同位素分馏等基本概念的基础上,结合现有的观测事实,介绍应用δ13C辨别碳的源汇问题的方法,通过比较不同Keeling Plot方法分析该方法在研究大气CO2背景特征中的意义。着重讨论δ13C在研究大气CO2变化中的作用,以及在全球碳循环评估,尤其是利用观测的海水溶解无机碳的δ13C估算海洋吸收率研究中不同方法的特点及存在的问题,展望δ13C研究的发展趋势。

关键词: δ13C大气CO2同位素分馏全球碳循环海洋吸收    
Abstract:

With the development of analytical technique, δ13C observations have been paid more attentions in the study of global carbon cycle. Based on the discussion  the fundamental concepts of δ13C in the global carbon cycle, such as δ13C Suess Effect, observed δ13C ranges of various carbon reservoirs and fractionation between them, this article introduces the analytical methods in applying δ13C to distinguish carbon source and sink by combining with current observational facts. The roles of δ13C in the study of seasonal and interannual variations of atmospheric CO2 are discussed based on the facts that the δ13C from ocean is similar to that of atmosphere but that from terrestrial biosphere is much smaller than that of atmosphere. The various Keeling Plot approaches are introduced to show the achievements in analyzing the background characteristics  of atmospheric CO2 and its applicability is also discussed. The mass balance methods using observed atmospheric δ13C are analyzed to represent how to only use atmospheric δ13C data studying the missing carbon problems. The various δ13C inventory techniques in the assessment of global carbon cycle, particularly oceanic uptake rate, are analyzed to point out their features and shortages, and these techniques offer no model approaches to investigate the global carbon cycle. We  stress  that the uncertainties between inventory approaches are mainly from the observational errors, not from the techniques. Finally, the prospects of δ13C research in the global carbon cycle for both observational and theoretical fields are also discussed, especially the model based simulations. 

Key words: δ13C    Atmospheric CO2    Isotopic fractionation    Global carbon cycle    Oceanic uptake
收稿日期: 2011-06-20 出版日期: 2011-11-10
:  X523  
基金资助:

中国气象局气候变化专项“UD模式在全球碳循环研究中的应用”(编号:CCSF2007-44);江苏高校优势学科建设工程资助项目资助.

通讯作者: 陈中笑(1967-),男,副教授,江苏靖江人,主要从事全球生物地球化学循环研究.      E-mail: czxchen@nuist.edu.cn
作者简介: 陈中笑(1967-),男,副教授,江苏靖江人,主要从事全球生物地球化学循环研究. E-mail:czxchen@nuist.edu.cn
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引用本文:

陈中笑,赵琦. 全球碳循环研究中的δ13C方法及其进展[J]. 地球科学进展, 2011, 26(11): 1225-1233.

Chen Zhongxiao, Zhao Qi. δ13C Methods and Its Progress in the Study of Global Carbon Cycle. Advances in Earth Science, 2011, 26(11): 1225-1233.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2011.11.1225        http://www.adearth.ac.cn/CN/Y2011/V26/I11/1225

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