Can light pollution be avoided?

'The dazzling lights poured over the entire city, making the city put on a colorful coat. The high-end and exquisite sound and light technology methods, while showing the history of urban civilization, record the pace of urban change.' The Guangzhou Lantern Festival, the media portrayed it.

　　 This kind of beauty is not only poured into the tip of the media, but also in the hearts of ordinary people. But the opposite side of beauty also hides worry. According to relevant media reports, many citizens are overwhelmed by the high-density and long-term light. In addition to the lighting festivals where the lights are adjusted and brightened, light pollution is everywhere in daily life. The improper use of glass curtain walls, neon lights, high beams, etc. has also caused strong or weak light pollution.

　　 What is light pollution? Internationally, light pollution is generally divided into three categories, namely white pollution, artificial daylight and color light pollution. An expert from the Guangzhou Academy of Environmental Sciences made an understanding of light pollution. He pointed out that the term light pollution mainly refers to disturbing light or excessive light radiation (including visible light, ultraviolet and infrared light radiation), which is negative to human physical and mental health and human living environment. A general term for impact, but not a strict environmental protection term. Assuming that disturbing light or light radiation from a certain light source has a negative impact on human physical and mental health and the human living environment, we can assume that light pollution has occurred.

　　 After all, how much is light pollution? The South China Institute of Environmental Science of the Ministry of Environmental Protection focused on the light pollution situation in Guangzhou last year and worked with South China University of Technology, Guangdong University of Technology, Hunan Agricultural University, Foshan Entry-Exit Inspection and Quarantine Bureau to feel the light pollution of Guangzhou citizens An inquiry was made. Among the 538 citizens who were inquired about, 61% believed that there was light pollution in Guangzhou. The longer they lived in Guangzhou, the more people believed that there was light pollution in Guangzhou. In addition, He Minhao, an expert from the School of Environmental Science and Engineering, Sun Yat-Sen University, conducted an inquiry about night light pollution in Yuexiu District, Guangzhou several years ago. The query data shows that the horizontal illuminance of Beijing Road Commercial Pedestrian Street, Nonglinxia Road Commercial Street, and Zhonghua Plaza Commercial District are all high, especially the illuminance value of the arcade in front of Xindaxin Company is severely overrun, which is 60 times that of Shanghai's relevant standards. It is 120 times of the 'Energy Saving-Urban Green Lighting Demonstration Project' promulgated and implemented by the Ministry of Construction. The average horizontal illuminance value of the sidewalks on both sides of the Beijing Road Pedestrian Street has also reached 30 times of Shanghai's relevant standards and 60 times of the 'Energy Conservation-Urban Green Lighting Demonstration Project'.

　　 Although the inquiry only responded to the situation in Guangzhou, a glimpse of the situation, the whole leopard was seen. Following the process of urbanization, light pollution took turns to be staged in major cities across the country, becoming the two major nuisances that go hand in hand with noise pollution.