| 控制灌溉对稻田CH4和N2O综合排放及温室效应的影响 |
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| 引用本文： | 彭世彰,杨士红,徐俊增.控制灌溉对稻田CH4和N2O综合排放及温室效应的影响[J].水科学进展,2010,21(2):235-240. |
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| 作者姓名： | 彭世彰 杨士红 徐俊增 |
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| 作者单位： | 1.河海大学水文水资源与水利工程科学国家重点实验室, 江苏, 南京, 210098; |
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| 基金项目： | 国家自然科学基金资助项目，高等学校全国优秀博士学位论文作者专项资金资助项目，教育部博士点基金资助项目 |
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| 摘 要： | 采用静态箱-气象色谱法对控制灌溉稻田CH4和N2O排放进行了观测,研究控制灌溉模式对稻田CH4和N2O排放的影响,并对其温室效应进行了评估。结果表明,控制灌溉稻田CH4排放通量明显低于淹水灌溉稻田,且主要集中在分蘖前期和中期,全生育期CH4排放量比淹水灌溉稻田减少73.2%～85.0%。控制灌溉稻田N2O排放通量在水稻全生育期大部分时间都要大于淹水灌溉稻田,稻季N2O排放量分别为106.65 mg/m2和96.40 mg/m2,控灌稻田较淹灌稻田增加了10.6%。控制灌溉稻田稻季排放CH4和N2O的全球增温潜势(GWPs)为726 kg/hm2,较淹水灌溉稻田减少了59.1%。控制灌溉模式能显著降低CH4和N2O综合排放的全球增温潜势。
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| 关 键 词： | 节水灌溉 稻田 温室气体 温室效应 CH4 N2O 排放 |
| 收稿时间： | 2009-03-18 |
Influence of controlled irrigation on CH_4 and N_2O emissions from paddy fields and subsequent greenhouse effect |
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| PENG Shi-zhang,YANG Shi-hong,XU Jun-zeng.Influence of controlled irrigation on CH_4 and N_2O emissions from paddy fields and subsequent greenhouse effect[J].Advances in Water Science,2010,21(2):235-240. |
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| Authors: | PENG Shi-zhang YANG Shi-hong XU Jun-zeng |
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| Affiliation: | 1.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | The methane(CH4) and nitrous oxide(N2O) emissions from controlled irrigation paddy fields were observed by using the static chamber gas chromatography(GC) method.The objective of the study is to investigate the influence of the controlled irrigation technique on the CH4 and N2O emission process and the subsequent greenhouse effect.The results show that during a life cycle of rice crop,the total CH4 emission from the controlled irrigation paddy field can be reduced by as much as 73.2% to 85.0% compared to th... |
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| Keywords: | CH4 N2O |
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