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温度和水分对草甸草原土壤氧化亚氮产生速率的调控

杜睿   

  1. 中国科学院大气物理研究所, 北京 100029
  • 收稿日期:2005-09-06 修回日期:2006-03-28 出版日期:2006-11-18 发布日期:2006-11-18

Effects of soil moisture and temperature on N2O production rate of meadow grassland soil

DU Rui   

  1. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
  • Received:2005-09-06 Revised:2006-03-28 Online:2006-11-18 Published:2006-11-18

摘要: 通过试验室模拟试验,研究了调控草甸草原黑钙土N2O产生速率的因素.结果表明,土壤水分对草甸草原土壤N2O产生速率有重要影响(F=6.149,P<0.01).但相关性分析表明,草甸草原土壤含水量与N2O的产生速率间线性相关不显著.就土壤N2O的产生速率而言,温度的影响远低于土壤水分的影响(F=2.275,P=0.106).土壤水分和温度对不同生长阶段的草甸草原土壤N2O产生速率的调控作用主要表现为阶段性的多阶多项式关系:y=ax3+bx2+cx+d,其中a、b、c、d是常数.

关键词: 森林景观, 长白山, 地理信息系统, 遥感

Abstract: With incubation test, this paper studied the effects of soil moisture and temperature on the N2O production rate of meadow grassland chernozem in nner Mongolia. The results showed that soil moisture had a significant effect on the N2O production rate, with a non-linear relationship between them. Soil temperature had less effect than soil moisture. Their effects on the test soil N2O production rate at different growth stages could be described as a multi-rder polynomial relationship y=ax3+bx2+cx+d, where a, b, c and d were the constants.

Key words: Forest Landscape, Changbai Mountain, GIS, Remote sensing