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应用生态学报 ›› 1995, Vol. 6 ›› Issue (4): 337-340.

• 研究论文 •    下一篇

几种木本植物的N2O释放与某些生理活动的关系

杨思河, 陈冠雄, 林继惠, 吴杰, 马越强   

  1. 中国科学院沈阳应用生态研究所陆地生态系统痕量物质生态过程开放实验室, 沈阳 110015
  • 收稿日期:1995-02-28 修回日期:1995-04-10 出版日期:1995-10-25 发布日期:1995-10-25
  • 基金资助:

    中国科学院陆地生态系统痕量物质生态过程开放实验室基金

N2O emission from woody plants and its relation to their physiological activities

Yang Sihe, Chen Guanxiong, Lin Jihui, Wu Jie, Ma Yueqiang   

  1. Laboratory of Ecological Process of Trace Substance in Terrestrial Ecosystem, Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1995-02-28 Revised:1995-04-10 Online:1995-10-25 Published:1995-10-25

摘要: 使用带有开放气路的气体交换测定系统,同步测定了几种针、阔叶树种的光合作用、呼吸作用及气孔导度。结果表明,低光下树木针叶或叶片释放N2O的速率与光合速率无显着相关。伴随根、茎、叶的呼吸,检测到有N2O吸收现象,其通量与温度及呼吸强度呈正相关。气孔导度明显影响N2O的通量,表明气孔可能是木本植物释放N2O的主要途径。

关键词: 木本植物, N2O释放, 气孔导度

Abstract: Using gas exchange measurement system, the photosynthesis, respiration and stomatal conductance of several coniferous and broadleaved tree species were measured simultaneously.Under conditions of low and middle illumination, N2O emission is found from leaves or needles of tested tree species.There is no significant relationship between N2O flux and photosynthetic rate.The N2O absorption by plants is also observed.Its emission rate is increaed with increasing temperature and respiration rate.Stomata is probably the main pathway for N2O emission.

Key words: Woody plant, N2O emission, Stomatal conductance