| 开放式空气CO2增高对稻田CH4和N2O排放的影响 |
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| 引用本文： | 徐仲均,郑循华,王跃思,韩圣慧,黄耀,朱建国.开放式空气CO2增高对稻田CH4和N2O排放的影响[J].应用生态学报,2002,13(10):1245-1248. |
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| 作者姓名： | 徐仲均 郑循华 王跃思 韩圣慧 黄耀 朱建国 |
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| 作者单位： | 1. 中国科学院大气物理研究所,北京,100029
2. 中国科学院南京土壤研究所,南京,210008 |
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| 基金项目： | 国家自然科学基金项目 (4 0 175 0 3 0、40 12 0 14 0 817)，中国科学院知识创新重要方向资助项目 (KZCX2 40 8) . |
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| 摘 要： | 在FACE(free aircarbondioxideenrichment)平台上 ,采用静态暗箱 气相色谱法观测研究了大气CO2 浓度增加对稻田CH4和N2 O排放的影响 .结果表明 ,在 15 0和 2 5 0kgN·hm-2 两种氮肥水平下大气CO2 浓度增加 2 0 0 μmol·mol-1均明显促进水稻生长 ,水稻生物量积累 .大气CO2 浓度增加对 15 0和 2 5 0kgN·hm-2 两种氮肥水平下稻田CH4排放均无显著影响 ,并简要分析了与现有文献报道结果不一致的原因 .大气CO2 浓度增加也未导致 15 0和 2 5 0kgN·hm-2 两种氮肥水平下稻田N2 O排放的明显变化 ,与大多数研究结果一致 .
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| 关 键 词： | 开放式空气CO2浓度增高 稻田 CH4排放 N2O排放 |
| 文章编号： | 1001-9332(2002)10-1245-04 |
| 修稿时间： | 2002年6月12日 |
Effects of elevated atmospheric CO2 on CH4 and N2O emissions from paddy fields |
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| XU Zhongjun,ZHENG Xunhua,WANG Yuesi,HAN Shenghui,HUANG Yao,ZHU Jianguo.Effects of elevated atmospheric CO2 on CH4 and N2O emissions from paddy fields[J].Chinese Journal of Applied Ecology,2002,13(10):1245-1248. |
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| Authors: | XU Zhongjun ZHENG Xunhua WANG Yuesi HAN Shenghui HUANG Yao ZHU Jianguo |
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| Institution: | Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029. xzhongjun@sina.com.cn |
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| Abstract: | Effects of elevated atmospheric CO2 on CH4 and N2O emissions during the paddy rice-growing season were examined in a FACE (free-air carbon dioxide enrichment) study. The emission fluxes of CH4 and N2O from paddy rice fields were measured using methods based on static opaque-chamber and gas chromatography techniques. Synthetic fertilizer N was amended for the rice-growing season at two rates, 150 and 250 kgN.hm-2 and the atmospheric CO2 was enriched by 200 mumol.mol-1. At both N levels, the preliminary results indicate that no significant effect of CO2 enrichment on CH4 and N2O emissions from the rice paddy fields was detected. The result on CH4 emissions is inconsistent with the most literatures, and the result on N2O emissions is consistent with the most literatures. |
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| Keywords: | Free-air CO 2 enrichment CH 4 emissions N 2O emission Paddy rice fields |
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