Abstract
With the continuous development of society, the use of light becomes more and more fre- quent. In order to study the factors affecting light pollution, we first created a model to assess the degree of light production, and divided light pollution into 3 types: Photo-phore, Light Trespass and Lighting Effect. Then we weighted these three factors with entropy weight method (EWM) and we calculate that the weights are respectively 0.2671, 0.6004 and 0. 1324. After that, we built a model to measure the bearing capacity of light. We have grouped the influencing factors into 3 categories: Humanity, Biomass and Altitude, with Biomass being a negative indicator. We apply the light pollution level model to 4 samples. They are Jinniu District (city community), Longquanyi (suburban community), Dayi County (rual community) and Longxi Hongkou Protection Zone(protected land). And we determine their scores. The light-polluting production are respectively 0.9799, 0.1232, 0.0887 and 0. The bearing capacity of light are respectively 0.8827, 0.6072, 0.3395 and 0.1250. The pollution level are respectively 0.2222, -0.3590, -0.1658 and 0.
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