Revealing the Risks of Light Pollution and Regional Governance Strategies

Light pollution impacts various environmental and human health aspects, necessitating a robust quantitative analysis for effective abatement. This investigation entailed an extensively systematic exploration of light pollution levels across 31 Chinese provinces and four earmarked zones, excluding Hong Kong, Macau, and Taiwan. We introduced a two-tier comprehensive examination index for light pollution utilizing the entropy weighting method-based TOPSIS model, generating a light pollution rating for each region. Coupled with a multitude of factors, specific abatement protocols were devised. Cluster analysis aided the demarcation of the regions into different risk levels, thus facilitating tailored interventions. Outcomes revealed that Shennongjia Scenic Area exhibited minimal light pollution, offering an excellent model for intervention strategy efficacy. Conversely, Hongqiao District in Shanghai suffered severe light pollution, warranting urgent interventional measures. Prioritizing urban lighting management, ensuring safety, and maintaining ecological protection emerged as the most effective strategies, underscoring the potential for tangible improvements in the management of light pollution.