The frequency ranges of eddy contributions to CO2 fluxes were mostly within 0.01-2.0 Hz,and the eddy translated by low frequency over canopy contributed more of CO2 fluxes.

• 湍流通量贡献区主要在0.；01~2Hz频率范围内；冠层上方低频传输的湍涡贡献了更多的CO2通量