| 全球冻融地区土壤是重要的N20释放源的综合分析 |
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| 引用本文： | 朴河春,刘广深.全球冻融地区土壤是重要的N20释放源的综合分析[J].地球科学进展,1995,10(3):283-288. |
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| 作者姓名： | 朴河春 刘广深 |
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| 作者单位： | 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 |
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| 摘 要： | Ｎ２Ｏ是重要的温室气体之一，它是微生物硝化作用和脱氮化作用过程的产物。有多种释放源，其中土壤圈是重要的释放源之一。在影响Ｎ２Ｏ释放通量的诸多因素中温度是关键因素之一。本文根据土壤冻融加强有机质矿化作用，以及对微生物群体产生非生物应力的性质，结合冻融地区土壤和冻土带湿地所具有的特征，进行综合分析，论述冻融地区土壤是重要的Ｎ２Ｏ释放源。
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| 关 键 词： | 土壤 冻融 硝化作用 脱氮化作用 一氧化二氮 |
SOILS IN GLOBAL FREEZING-THAWING AREAS AS THE MAJOR N_2O-RELEA81NG SOURCE |
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| Piao Hechun Liu Guangshen Hong Yetang.SOILS IN GLOBAL FREEZING-THAWING AREAS AS THE MAJOR N_2O-RELEA81NG SOURCE[J].Advance in Earth Sciences,1995,10(3):283-288. |
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| Authors: | Piao Hechun Liu Guangshen Hong Yetang |
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| Institution: | Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002 |
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| Abstract: | N_2O is one of the important greenhouse gases,and is an intermediate product of nitri-fication and denitrification, There are a variety of N_2O-releasing sources,of which the pe-dosphere is one of the important N_2O-releasing sources. Temperature is one of key factorsaffecting N_2O-releasing flux.On the basis of enhancing mineralization of organic matter,and inducing non-biologi-cal stress on microorganic population as a result of soil freezing-thawing,it is summarizedthat global freezing-thawing soils are the important N_2O-releasing sources in considerationof the characteristics of freezing-thawing soils and wetland in tundra. |
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| Keywords: | Soil freezing-thawing Nitrification Denitrification Nitrous oxide Tundra |
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