开放式空气CO2增高对稻田CH4和N2O排放的影响

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

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. 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
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. 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

摘要/Abstract

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.

关键词: CO₂浓度增高, CH₄排放, N₂O排放, 稻田, 微气象特征, 冠层结构, 湍流谱, 总体输送系数, 大气稳定度

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.

Key words: micro-meteorological characteristic, turbulence spectra, bulk transfer coefficient, atmospheric stability., canopy structure

中图分类号:

X511

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, (10): 1245-1248.

XU Zhongjun, ZHENG Xunhua, WANG Yuesi, HAN Shenghui, HUANG Yao, ZHU Jianguo . [J]. Chinese Journal of Applied Ecology, 2002, (10): 1245-1248.

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开放式空气CO₂增高对稻田CH₄和N₂O排放的影响

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