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Advances in Earth Science  1995, Vol. 10 Issue (3): 283-288    DOI: 10.11867/j.issn.1001-8166.1995.03.0283
Articles     
SOILS IN GLOBAL FREEZING-THAWING AREAS AS THE MAJOR N2O-RELEASING SOURCE
Piao Hechun, Liu Guangshen,Hong Yetang
Institute of Geochemistry,Chinese Academy of Sciences,Guiyang   550002
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Abstract  

    N2O is one of the important greenhouse gases, and is an intermediate product of nitrification and denitrification. There are a variety of N2O-releasing sources, of which the pedosphere is one of the important N2O-releasing sources. Temperature is one of key factors affecting N2O-releasing flux.
    On the basis of enhancing mineralization of organic matter, and inducing non-biological stress on microorganic population as a result of soil freezing-thawing, it is summarized that global freezing-thawing soils are the important N2O-releasing sources in consideration of the characteristics of freezing-thawing soils and wetland in tundra.

Key words:  Soil freezing-thawing      Nitrification      Denitrification      Nitrous oxide      Tundra.     
Received:  06 June 1994      Published:  01 June 1995
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Piao Hechun, Liu Guangshen,Hong Yetang. SOILS IN GLOBAL FREEZING-THAWING AREAS AS THE MAJOR N2O-RELEASING SOURCE. Advances in Earth Science, 1995, 10(3): 283-288.

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http://www.adearth.ac.cn/EN/10.11867/j.issn.1001-8166.1995.03.0283     OR     http://www.adearth.ac.cn/EN/Y1995/V10/I3/283

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