欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2003, Vol. ›› Issue (11): 2015-2018.

• 研究论文 • 上一篇    下一篇

黑土稻田CH4与N2O排放及减排措施研究

岳进, 梁巍, 吴杰, 史奕, 黄国宏   

  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
  • 收稿日期:2002-04-23 修回日期:2002-10-10 出版日期:2003-11-15
  • 通讯作者: 岳进,女,1975年生,硕士,主要从事农田生态系统生物源温室气体排放研究.E-mail:jyuemai@yahoo.com.cn.
  • 基金资助:
    国家重点基础研究发展规划项目(G199901805);中国科学院资源环境领域知识创新工程资助项目(KZCX2408)

CH4 and N2O emissions from phaeozem rice field and their mitigative measures

YUE Jin, LIANG Wei, WU Jie, SHI Yi, HUANG Guohong   

  1. Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2002-04-23 Revised:2002-10-10 Online:2003-11-15

摘要: 通过对黑土稻田CH4和N2O排放的观测,发现水稻生长季CH4和N2O排放量低于全国其它地区稻田.CH4和N2O排放之间存在互为消长关系(r=-0.513,P<0.05).但在同样施肥水平条件下,间歇灌溉与长期淹灌相比,CH4排放明显减少而N2O略有增加,其相对综合温室效应被大大减少且水稻产量未受影响.为此,间歇灌溉可作为减少稻田温室气体排放的水分管理措施.另外,通过对CH4和N2O排放的相关微生物过程探讨,揭示产甲烷菌数与CH4排放间呈显著性正相关(R2=0.82,P<0.05),硝化菌数和反硝化菌数与N2O排放有重要关系.

关键词: 黑土, CH4和N2O, 减排措施, 微生物过程

Abstract: Determinations on the CH4 and N2O emissions from phaeozem rice field showed that their emission amount in rice growing season was much lower than any other regions in China.There was trade-off relationship between CH4 and N2O emissions(r=-0.513,P<0.05). Under the same fertilization,compared with continual irrigation, intermittent irrigation could reduce significantly CH4 emission and increase N2O emission,but the overall warming potential of greenhouse effect was reduced greatly,while rice yield was not affected.Therefore,intermittent irrigation was an effective irrigation measures to reduce greenhouse gas emissions from rice field. In addition,investigations on CH4 and N2Oemissions and their related microbial process showed a positive relation between methanogens number and CH4 emission(R2=0.82,P<0.05),and the important relationship between the numbers of nitrifiers and denitrifiers and N2O emissions.

Key words: Phaeozem, CH4 and N2O, Mitigative measures, Microbial process

中图分类号: