Data accompanying the research on Variations in seasonal and inter-annual carbon fluxes in a semiarid sandy maize cropland ecosystem in China’s Horqin Sandy Land

The data mainly including environment factors, such as net radiation, wind speed, wind direction, soil heat flux at the depth of 5 and 10 cm, air temperature, soil temperature, soil water content at the depth of 10, 20, 30, 40 and 50 cm, and the carbon flux data