Abstract
The widespread use of artificial light at night has improved the quality of human life, but it has also brought about a global light pollution problem with profound and complex ecological, human and economic impacts. To measure the severity of light pollution, a new light pollution risk index was developed in this paper. Three main aspects of light pollution impacts were considered: economic level (EL1), ecological level (EL2) and social level (SL), and six tertiary levels were identified under the secondary evaluation indicators. Then, the light pollution risk indices of these four areas were derived from the model using the Tuvaijuituq Marine Reserve in Canada (protected area), Homer City in USA (rural area), Pinggu District in Beijing (suburban area), and Manhattan City in USA (urban area), and the results were compared with the Bortle dark sky scale to test the accuracy of the model and further demonstrate the generality and validity of the LPRI index.
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