The finer the soil, the higher the reflectivity.

influenced by latitude position, land and sea position, weather conditions, day and night length, topography and other factors, the distribution of solar radiation on the ground surface is uneven. The reflectivity of new snow is the highest, followed by ice, followed by sandy soil, light-colored soil, grassland and cultivated land, and the ocean reflectivity is the lowest.

The surface area of grassland is larger than that of bare land and cement land, and grass will reflect green light, while bare land.