中文摘要：

甲烷(CH < 潜水艇 class= “ a-plus-plus ” > 4 ), 二氧化碳(公司 < 潜水艇 class= “ a-plus-plus ” > 2 ) 和氧化氩氮(N < 潜水艇 class= “ a-plus-plus ” > 2 O ) 被知道是贡献全球温暖的主要温室气体。因此，识别这些温室气体的流动动力学意义大。在这篇论文，我们在 Bayinbuluk 草地生态系统研究车站在一块高山的草地和高山的沼泽地上进行了比较研究，中国科学院。由使用不透明的、静态的、用手的不锈钢房间和煤气的层析，我们测量了 CH 的流动<潜水艇class=“ a-plus-plus ”> 4 , N <潜水艇class=“ a-plus-plus ”> 2 O 和公司<潜水艇class=“ a-plus-plus ”>从草地和沼泽地通过的 2 一在里面从2010年5月的 situ 监视学习到2012年10月。 CH 的吝啬的流动率<潜水艇class=“ a-plus-plus ”> 4 , N <潜水艇class=“ a-plus-plus ”> 2 O 和公司<潜水艇class=“ a-plus-plus ”>为在成长季节的试验性的高山的沼泽地的 2 (从5月到10月)被估计在 322.4 g/( m <啜class=“ a-plus-plus ”> 2 ?卌 ？？

英文摘要：

Methane （OH4）, carbon dioxide （CO2） and nitrous oxide （N2O） are known to be major greenhouse gases that contribute to global warming. To identify the flux dynamics of these greenhouse gases is, therefore, of great significance. In this paper, we conducted a comparative study on an alpine grassland and alpine wetland at the Bayinbuluk Grassland Eco-system Research Station, Chinese Academy of Sciences. By using opaque, static, manual stainless steel chambers and gas chromatography, we measured the fluxes of CH4, N2O and CO2 from the grassland and wetland through an in situ monitoring study from May 2010 to October 2012. The mean flux rates of CH4, N2O and CO2 for the experimental alpine wetland in the growing season （from May to October） were estimated at 322.4 μg/（m2.h）, 16.7 μg/（m2.h） and 76.7 mg/（m2.h）, respectively; and the values for the alpine grassland were -88.2 μg/（m2.h）, 12.7 μg/（m2.h）, 57.3 mg/（m2.h）, respectively. The gas fluxes showed large seasonal and annual variations, suggesting weak fluxes in the non-growing season. The relationships between these gas fluxes and environmental factors were analyzed for the two alpine ecosystems. The results showed that air temperature, precipitation, soil temperature and soil moisture can greatly influence the fluxes of CH4, N2O and CO2, but the alpine grassland and alpine wetland showed different feedback mechanisms under the same climate and environmental conditions.