The purpose of the paper is to clarify scientific significance of the remote sensing for obtaining levity parameters in time and space on the earth surface. First of all, Several regional imageries of the levity parameters, such as leaf area index, ground surface temperature and the net radiation were made using remote sensing data and the ecosystem network data. Secondly, measurements at the ecological stations were indicated in the imageries. Thirdly, averages and deviations for several different scale areas were made by using imaging processing. Fourthly, differences between the measurements at points and averages in the areas were pointed out. Finally, analyses the possible error when using measurements at points to express regional distribution. The analyses indicated the traditional expression of the regional averages for the parameters using single point measurements error beget very big error for leaf area index . There the leaf area index has extreme inhomogeneous distribution in space. The ground surface temperature takes second place. Meantime limitation of the remote sensing was also discussed. Effective and feasible way which express regional distribution well is combination between remote sensing method and point measurements。