Using closed chamber technique and gas chromatography, in-site measurements of N2O,CH4 and CO2 greenhouse gase fluxes from grassland ecosystem were systematically conducted.

• 利用静态箱法采样，配以气相色谱仪法分析对草地N2O、CH4和CO2温室气体通量进行了较系统的现场测量，同时对箱体内外温度进行同步观测。