The preliminary study on CO2 flux variation characteristics of alfalfa growth stages in Songnen plain

摘要

CO2 flux of artificial alfalfa land was studied in Songneng plain, using the static box and the gas phase chromatography for CO2 flux was observed, at the same time to records the land surface temperature and air temperature.The results showed in the artificial alfalfa land in every growth stages that CO2 flux was negative value, having function to sink the carbon;between CO2 flux and air temperature are positively correlated, the ground surface temperature no obvious correlation.