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| 下辽河平原典型农田融化期氧化亚氮和甲烷排放通量研究 | |
| 引用本文： | 郑靖,王重阳,王迎红,鲁彩艳,史奕,陈欣.下辽河平原典型农田融化期氧化亚氮和甲烷排放通量研究[J].生态学杂志,2005,24(9):999-1003. |
| 作者姓名： | 郑靖 王重阳 王迎红 鲁彩艳 史奕 陈欣 |
| 作者单位： | 1. 中国科学院沈阳应用生态研究所陆地生态过程重点实验室,沈阳,110016;中国科学院研究生院,北京,100039 2. 沈阳农业大学,沈阳,110161 3. 中国科学院大气物理所,北京,100029 |
| 基金项目： | 中国科学院知识创新工程项目（KZ-CX-SW-01-01B-13）、国家自然科学基金重点项目（40331014）和中国科学院沈阳生态实验站基金资助项目（SYZ0302）. |
| 摘 要： | 应用静态箱／气相色谱法对下辽河平原典型农田（大豆地、玉米地、水稻田）土壤融化期N2O和CH4排放通量进行了研究。结果表明，在融化期间，3种农田N20排放量均较大，这段时期的农田是大气N2O的一个重要源；3种农田CH4排放不明显，成为大气CH4的汇。在融化期间，农田N2O排放量，旱田CH4排放量与箱内温度间均无显著相关性。而水稻田CH4排放量与箱内温度呈显著负相关，相对于生长季来说，这是土壤融化期间的特定现象。 |
| 关 键 词： | N2O CH4 融化期 下辽河平原 |
| 文章编号： | 1000-4890（2005）09-0999-05 |
| 收稿时间： | 2004-07-10 |
| 修稿时间： | 2005-03-16 |
Nitrous oxide and methane emissions from different agricultural fields during freezing and thawing periods in the lower reaches of Liaohe Plain |
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| ZHENG Jing,Wang Chongyang,Wang Yinghong,LU Caiyan,SHI Yi,CHEN Xin.Nitrous oxide and methane emissions from different agricultural fields during freezing and thawing periods in the lower reaches of Liaohe Plain[J].Chinese Journal of Ecology,2005,24(9):999-1003. | |
| Authors: | ZHENG Jing Wang Chongyang Wang Yinghong LU Caiyan SHI Yi CHEN Xin |
| Abstract: | Flux of nitrous oxide and methane were measured in the lower reaches of Liaohe Plain by using static cnambet-gas chromatographic techniques in thawing period. The plots included maize, soybean and paddy fields. The results showed that the flux of nitrous oxide in the three plots were high in the period indicating important N2O-releasing sources. The flux of methane in these plots was quite low in the period which inducated that the fields are important CH4-absorbing sinks. In thawing periods, temperature has no significant relationship with flux of nitrous oxide in the three plots. It is maybe a special phenomenon in contrast to that in the growing period. |
| Keywords: | nitrous oxide methane thawing period the lower reaches of Liaohe Plain |
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