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应用生态学报 ›› 2002, Vol. ›› Issue (10): 1245-1248.

• 研究论文 • 上一篇    下一篇

开放式空气CO2增高对稻田CH4和N2O排放的影响

徐仲均1, 郑循华1, 王跃思1, 韩圣慧1, 黄耀1, 朱建国2   

  1. 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
  • 收稿日期:2002-06-12 修回日期:2002-08-18 出版日期:2002-10-15
  • 通讯作者: 郑循华
  • 基金资助:
    国家自然科学基金项目(40175030、40120140817);中国科学院知识创新重要方向资助项目(KZCX2408).

XU Zhongjun1, ZHENG Xunhua1, WANG Yuesi1, HAN Shenghui1, HUANG Yao1, ZHU Jianguo 2   

  1. 1. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;
    2. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008
  • Received:2002-06-12 Revised:2002-08-18 Online:2002-10-15

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N2O排放的影响.结果表明,在150和250kgN·hm-2两种氮肥水平下大气CO2浓度增加200μmol·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150和250kgN·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150和250kgN·hm-2两种氮肥水平下稻田N2O排放的明显变化,与大多数研究结果一致.

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 250kgN·hm-2 and the atmospheric CO2 was enriched by 200μmol·mol-1. At both Nlevels, 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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