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生态学杂志 ›› 2004, Vol. ›› Issue (2): 11-14.

• 研究报告 • 上一篇    下一篇

下辽河平原稻田非生长季碳排放观测研究

谢艳兵1,3, 梁文举1,3, 王跃思2, 王朋1   

  1. 1. 中国科学院沈阳应用生态研究所, 沈阳, 110016;
    2. 中国科学院大气物理研究所, 北京, 100029;
    3. 中国科学院研究生院, 北京, 100039
  • 收稿日期:2003-07-16 修回日期:2003-10-31 出版日期:2004-04-10
  • 通讯作者: 梁文举
  • 基金资助:
    中国科学院知识创新工程重大项目(KZCX1-SW-01);中国科学院沈阳生态实验站基金资助项目(K09SDSYZ0204)

Carbon fluxes from a non-cropping paddy field in the Lower Reaches of Liaohe Plain

XIE Yanbing1,3, LIANG Wenju1,3, WANG Yuesi2, WANG Peng1   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;
    3. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
  • Received:2003-07-16 Revised:2003-10-31 Online:2004-04-10

摘要: 应用静态箱/气相色谱法对下辽河平原稻田非生长季碳排放动态变化规律进行了测定。结果表明,非生长季(10月至翌年4月)稻田CH4、CO2和N2O排放总体上随气温变化而发生变化。在冻融期(3月中下旬)CO2和N2O有明显的排放。非生长季节的稻田是大气CO2和N2O的源,作为大气CH4的源或汇的作用不明显。

关键词: 氮沉降, 杂草, 生物量, 氮吸收

Abstract: Carbon fluxes from a non-cropping paddy field in the Lower Reaches of Liaohe Plain were measured by a closed-chamber and gas chromatography-based system. The result showed that carbon fluxes were changed as temperature changed. The emission of CO2 and N2O from soil was significant during thawing. The soil of paddy field was the source of atmospheric CO2 and N2O during non-cropping season, and the soil as a sink or source of atmospheric CH4 was not significant.

Key words: Nitrogen deposition, Weed, Biomass, Nitrogen uptake

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