论文部分内容阅读
1.导言过去几年大气层中甲烷浓度每年以约1％的速度递增,这种增长对全球的气候和对流层大气的化学行为将产生重要的影响。有机质的生物矿化反应,尤其是面积为1.5×10~6Km~2的稻田,成为最重要的大气甲烷来源之一。影响稻田甲烷释放率的原因有温度、昼夜时间、纬度、品种、施肥量和施肥方式,种植季节和土壤类型等。本文涉及到了这些重要问题。
1. INTRODUCTION Methane concentrations in the atmosphere have been increasing by about 1% annually over the past few years and this growth will have a major impact on the global climate and on the tropospheric chemical behavior. Biomineralization of organic matter, especially paddy fields with an area of 1.5 × 10 ~ 6Km ~ 2, has become one of the most important sources of atmospheric methane. The factors influencing the methane release rate in paddy fields are temperature, day and night time, latitude, variety, amount of fertilizers and fertilization mode, planting season and soil types. This article covers these important issues.