| 冬闲水田土壤——一个重要的尚未确定的N2O释放源 |
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| 引用本文： | 徐文彬,洪业汤.冬闲水田土壤——一个重要的尚未确定的N2O释放源[J].环境科学研究,1999,12(3):42-45. |
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| 作者姓名： | 徐文彬 洪业汤 |
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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,贵阳 550002 |
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| 摘 要： | 通过对土壤N20生成机理和影响因素、冬闲田土壤中碳氮营养基质积累、N20强烈脉冲释放和冬闲田分布面积的分析，提出北半球热带－亚热带地区冬闲田可能是一个重要的尚未确定的N20释放源。粗略估计N20(以N20—N计)年释放量为0.75 Tg。
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| 关 键 词： | 氧化亚氮(N20) 冬闲田 脉冲释放 释放源 |
Paddy Fields Following A Dry Season Fallow:A Potential Important N2O Source |
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| Xu Wen-bin and HONG Ye-tang.Paddy Fields Following A Dry Season Fallow:A Potential Important N2O Source[J].Research of Environmental Sciences,1999,12(3):42-45. |
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| Authors: | Xu Wen-bin and HONG Ye-tang |
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| Institution: | State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,CAS,Guiyang 550002 |
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| Abstract: | According to the analysis of N 2O production
mechanism and its controlling factors in soil,the accumulation of organic carbon and nitrate
during a dry season fallow,the occurrence of sudden,the strong N 2O emission pulses,and the
distribution area of global paddy fields,it suggests that the paddy fields following a dry season
fallow might be a potential important N 2O source in the tropical and sub-tropical regions.The
glogal annual N 2O emission(calculated by N 2O N)from this source is estimated about 0.75
Tg. |
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| Keywords: | Nitrous oxide (N 2O) Paddy fields following a dry season fallow Emission pluses Source |
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