植物生态学报 ›› 2002, Vol. 26 ›› Issue (5): 538-542.

• 论文 • 上一篇    下一篇

树木N2O排放速率的测定

张秀君,徐慧,陈冠雄   

  • 发布日期:2002-05-10
  • 通讯作者: 张秀君

N2O Emission Rate from Trees

ZHANG Xiu-Jun, XU Hui and CHEN Guan -Xiong   

  • Published:2002-05-10
  • Contact: ZHANG Xiu-Jun

摘要: 采用封闭罩法,对长白山阔叶红松林的几个主要树种——水曲柳 (Fraxinus mandshurica)、红松 (Pinus koraiensis)、毛赤杨(Alnus hirsuta)和椴树(Tilia amurensis)的连体枝叶排放N2O的速率进行了原位测定, 并考察了树木的N2O排放速率与土壤含水量的关系。结果表明:在观测期间,4种树木的N2O排放速率的变化范围分别为:水曲柳9.46~152.85 ng N2O·g-1 DW·h-1、红松1.37~64.51 ng N2O·g-1 DW·h-1、赤

Abstract: The sources and sinks of N2O, one of the major greenhouse gases in the atmosphere, are still unclear at present, and it is therefore needed to further investigate potential and known sources and sinks of atmospheric N2O. It was previously thought that b