Spatiotemporal analysis of artificial nighttime light pollution and environmental interactions in a rapidly urbanizing megacity

IF 7.1 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Sciences Europe Pub Date : 2026-05-15 Epub Date: 2026-06-09 DOI:10.1186/s12302-026-01380-1

Abdulla Al Kafy, Md Nahid Ferdous, Ahmed Ali A. Shohan, Saleh Alsulamy, Sanjida Bintey Ali, Tekalign Ketema Bahiru

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引用次数: 0

Abstract

Artificial nighttime light pollution (ANTLP) poses significant threats to ecological integrity, human health, and urban sustainability in rapidly urbanizing megacities. However, comprehensive understanding of spatiotemporal ANTLP dynamics and their environmental associations remains limited in developing regions. This study investigated: (a) spatiotemporal patterns and statistically significant hotspots of ANTLP; (b) associations between light pollution and urban development, topographic, hydrological, thermal, and demographic factors; and (c) co-occurring environmental changes in vegetation health, surface water extent, and thermal conditions in Dhaka, Bangladesh, during 2014–2023. Integrated VIIRS satellite data with Landsat-derived spectral indices (NDVI, NDBI, NDWI), MODIS nighttime land surface temperature, SRTM topography, and demographic data were analyzed. Getis-Ord Gi* hotspot analysis identified spatial clustering patterns, while principal component analysis (PCA) and correlation analysis quantified environmental associations. Mann–Kendall trend tests and permutation testing assessed statistical significance of temporal changes. ANTLP intensity increased from 0.56 to 143.25 nW/cm²/sr (7.2% annual growth; Mann–Kendall Z = 3.21, p = 0.0013). Hotspot coverage expanded significantly from 15 to 42% of the metropolitan area (permutation test p = 0.0091). Building proximity exhibited the strongest association with ANTLP (r = 0.97), followed by population density (r = 0.85). PCA identified five components explaining 89% of ANTLP variance. Areas of high ANTLP co-occurred with vegetation decline (NDVI: − 0.22 to − 0.55), surface water reduction (NDWI: − 0.37 to − 0.54), and 2.3 °C nighttime temperature elevation. These findings suggest that ANTLP serves as a spatially explicit indicator of broader urbanization pressures. The results provide evidence-based frameworks for sustainable urban lighting policies, including zoning regulations, buffer zone establishment around water bodies, and smart lighting implementation in rapidly developing cities.

Graphical Abstract

The alternative text for this image may have been generated using AI.

查看原文本刊更多论文

快速城市化超大城市夜间人工光污染与环境相互作用的时空分析

在快速城市化的特大城市中，人工夜间光污染对生态完整性、人类健康和城市可持续性构成了重大威胁。然而，在发展中地区，对ANTLP时空动态及其环境关联的全面认识仍然有限。本研究调查了：(a) ANTLP的时空格局和具有统计学意义的热点；(b)光污染与城市发展、地形、水文、热力和人口因素之间的关系；(c) 2014-2023年期间孟加拉国达卡在植被健康、地表水范围和热条件方面共同发生的环境变化。将VIIRS卫星数据与landsat衍生的光谱指数（NDVI、NDBI、NDWI）、MODIS夜间地表温度、SRTM地形和人口统计数据进行综合分析。Getis-Ord Gi*热点分析识别空间聚类格局，主成分分析（PCA）和相关分析量化环境关联。Mann-Kendall趋势检验和排列检验评估了时间变化的统计显著性。ANTLP强度从0.56 nW/cm2/sr增加到143.25 nW/cm2/sr，年增长率为7.2%,Mann-Kendall Z = 3.21, p = 0.0013。热点覆盖范围从大都市地区的15%显著扩大到42%（置换检验p = 0.0091）。建筑距离与ANTLP的相关性最强（r = 0.97），其次是人口密度（r = 0.85）。PCA确定了五个成分解释89%的ANTLP方差。高ANTLP区域与植被减少（NDVI:−0.22 ~−0.55）、地表水减少（NDWI:−0.37 ~−0.54）和夜间气温升高2.3℃同时发生。这些发现表明，ANTLP可以作为更广泛的城市化压力的空间明确指标。研究结果为可持续城市照明政策提供了基于证据的框架，包括分区法规、水体周围缓冲区的建立以及快速发展城市的智能照明实施。此图像的替代文本可能是使用AI生成的。

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来源期刊

Environmental Sciences Europe Environmental Science-Pollution

CiteScore

11.20

自引率

1.70%

发文量

110

审稿时长

13 weeks

期刊介绍： ESEU is an international journal, focusing primarily on Europe, with a broad scope covering all aspects of environmental sciences, including the main topic regulation. ESEU will discuss the entanglement between environmental sciences and regulation because, in recent years, there have been misunderstandings and even disagreement between stakeholders in these two areas. ESEU will help to improve the comprehension of issues between environmental sciences and regulation. ESEU will be an outlet from the German-speaking (DACH) countries to Europe and an inlet from Europe to the DACH countries regarding environmental sciences and regulation. Moreover, ESEU will facilitate the exchange of ideas and interaction between Europe and the DACH countries regarding environmental regulatory issues. Although Europe is at the center of ESEU, the journal will not exclude the rest of the world, because regulatory issues pertaining to environmental sciences can be fully seen only from a global perspective.