This dataset compiled solar radiation components data measured by horizontal and tilted radiometers and turbulent energy fluxes data from natural secondary forests at the Heilongjiang Maoershan Forest Ecosystem National Observation and Research Station for one consecutive year, including incident and reflected short-wave radiation, long-wave radiation, photosynthetically active radiation, near-infrared radiation, sensible heat flux, latent heat flux, and soil surface heat flux data, stored for 30 min time scale data files. The coverage of radiation data and turbulent energy flux data for the growing season (May 3 to October 10) was 100% and 81.3% respectively.Contents and meanings of the fields in the column labels of the Excel file of this dataset: SR (shortwave radiation) , LR (longwave radiation), Rn (net radiation), PAR (photosynthetically active radiation), NIR (near-infrared radiation), Tc (temperature measured by the built-in temperature sensor of the radiation meter), _dn (incident), _up (reflected), _net (net of incident minus reflected), _hon ( data collected from horizontally mounted radiation meter), _slope (data collected from tilted mounted radiation meter), _corr (corrected), _r (albedo), G_mean (heat flux measured by soil heat flux plate), Ss (soil heat storage above the heat flux plate), G0 (soil heat flux), H (sensible heat flux), LE (latent heat flux). For example, a column labeled SR_dn_slope_corr means that the column is the corrected data of the tilt-mounted radiation meter measuring incident short-wave radiation.