| 翻耕对冬闲农田CH4和CO2排放通量的影响初探 |
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| 引用本文： | 万运帆,林而达.翻耕对冬闲农田CH4和CO2排放通量的影响初探[J].中国农业气象,2004,25(3):8-10. |
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| 作者姓名： | 万运帆 林而达 |
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| 作者单位： | 中国农业科学院农业环境与可持续发展研究所,北京,100081 |
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| 基金项目： | 973项目中国陆地生态系统碳循环及其驱动机制研究 (2 0 0 2CB4 12 5 ) |
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| 摘 要： | 通过连续观测，比较了冬闲农田翻耕和不翻耕情况下甲烷(CH4)和二氧化碳(CO2)的排放通量。结果表明：翻耕能显著增加CO2的排放通量，但这种影响只在翻耕后的4d内较明显；翻耕对CH4排放通量的影响在翻耕后的3d内比较明显，表现为翻耕初期导致CH4的峰值排放，而在6～8h后，则对降低CH4的排放有一定的作用。且CH4和CO2排放通量与气温呈显著正相关。
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| 关 键 词： | 翻耕 冬闲农田 排放通量 甲烷 二氧化碳 温室气体 全球气候变化 |
The Influence of Tillage on CH4 and CO2 Emission Flux in Winter Fallow Cropland |
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| WAN Yun-fan,LIN Er-da.The Influence of Tillage on CH4 and CO2 Emission Flux in Winter Fallow Cropland[J].Chinese Journal of Agrometeorology,2004,25(3):8-10. |
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| Authors: | WAN Yun-fan LIN Er-da |
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| Abstract: | The difference of methane(CH_4) and carbon dioxide(CO_2) emission in winter fallow cropland under tillage and non-tillage condition were compared.The results showed that: tillage have a significant effect on increasing CO_2 emission flux in the first four days after tillage and on changing methane emission flux in three days after tillage.In the first 6 to 8 hours after tillage it has positive effect on CH_4 emission flux, but after that there is negative effect on CH_4 emission flux.In addition, the experiment also showed that CH_4 and CO_2 emission were positive correlated with air temperature significantly. |
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| Keywords: | Tillage Methane(CH_4) Carbon dioxide(CO_2) Emission flux |
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