Research on light pollution level based on comprehensive evaluation —— A case study of Beijing

Abstract

With the excessive use of artificial light, light pollution has become an increasingly serious problem. In order to accurately measure the level of light pollution in a certain region, this paper randomly selects 28 provinces in China as objects, and chooses the radiant luminance value L, the sky brightness, the glare value URG, the exposed area S, the GDP of gross domestic product and the number of inhabitants P as the indicators to measure the level of light pollution. Subsequently, using the Luo Jia 1 satellite and related databases, the indicators were weighted by entropy weighting method based on the TOPSIS model to obtain the corresponding scores of the 28 regions, and the normalised scores were recorded as the light pollution index. Finally, taking Beijing as an example, four types of areas were selected, relevant indicator data were collected, and the established TOPSIS model was used to obtain the value of the light pollution index and determine the light pollution level of these four types of areas.