基于高光谱数据的城市商业区夜景照明光污染研究——以上海市6个商业区为例

Research on Light Pollution of Urban Commercial Districts Nightscape Lighting Based on Hyperspectral Data:A Case Study of Six Commercial Districts in Shanghai

随着城市化的快速发展,夜间的城市照明不仅延长了居民的活动时间,还成为城市生活重要组成部分。然而,夜景人工照明的快速增长引发了严重的光污染问题,尤其是在上海这样的国际大都市。为了深入研究夜景照明引发的光污染,并分析有效的应对策略,本研究选取上海市的六个核心商业区为研究对象,从行人视角采集了95个高光谱数据单元。通过实地测试和数据对比分析,深入探讨了城市夜景照明光污染的状况。研究结果表明,城市商业区夜景照明的光环境较为复杂,不同商业区的光环境分布差异较大,光污染问题严重,特别是一些商业区的LED屏幕亮度超标严重。夜景照明也对夜空亮度造成了严重影响,同时对生态环境造成潜在威胁。研究结果对照明工作者、政策制定者和民众有一定指导的同时,也为应对光污染问题提供了一定的帮助。

With the rapid development of urbanization,urban night lighting has not only extended residents’activity hours,but has also become an essential part of urban life.However,the rapid growth of artificial nightscape lighting has led to severe light pollution issues,especially in international metropolises like Shanghai.To thoroughly investigate the light pollution caused by nightscape lighting and to analyse effective countermeasures,this study selected six core commercial districts in Shanghai as research subjects.From the pedestrian perspective,95 hyperspectral data units were collected.Through field tests and comparative data analysis,the study thoroughly explores the state of light pollution caused by urban nightscape lighting.The results indicated that the light environment in urban commercial districts is quite complex,with significant variations in light environment distribution across different commercial districts.Light pollution is severe,especially in some commercial districts where the brightness of LED screens significantly exceeds standard limits.Nightscape lighting also has a significant impact on the brightness of the night sky,while posing potential threats to the ecological environment.The research results provide guidance for lighting practitioners,policymakers,and the general public,while also offering assistance in addressing light pollution issues.