Nighttime light intensity and brightness suitability in urban functional zones
Abstract The identification and distribution of urban functional zones play a crucial role in optimizing urban planning and resource allocation. The differences in brightness of the nocturnal light environment further reveal the characteristics of urban functions. This study takes the main urban are...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-07-01
|
| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-025-10378-3 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849333488859217920 |
|---|---|
| author | Ming Liu Ruicong Li Yiwei Li Ezzaddeen Ali Mohammed Saeed AL-Mowallad Chenglong Wu Wenjing Wang |
| author_facet | Ming Liu Ruicong Li Yiwei Li Ezzaddeen Ali Mohammed Saeed AL-Mowallad Chenglong Wu Wenjing Wang |
| author_sort | Ming Liu |
| collection | DOAJ |
| description | Abstract The identification and distribution of urban functional zones play a crucial role in optimizing urban planning and resource allocation. The differences in brightness of the nocturnal light environment further reveal the characteristics of urban functions. This study takes the main urban area of Dalian as an example, integrates Point of Interest and OpenStreetMap data to generate functional zone samples, and proposes a multi-scale evaluation framework at the levels of administrative districts, streets, and blocks, combined with Luojia-1 night-time remote sensing imagery. The results show that: (1) Significant differences in brightness exist among functional zones within the study area, and there is a mismatch between actual demand and nighttime light brightness; (2) The Average Nighttime Radiance per Unit Area and Brightness Factor can more accurately reflect the distribution characteristics of urban nighttime light brightness; (3) Clustering based on the Brightness Factor reveals over-bright and under-bright blocks, identifying commercial and port-industry areas as hotspots of excessive nighttime lighting. This study dissects the spatial heterogeneity of the nocturnal light environment from the perspective of urban functional zoning and provides quantitative support for the development of differentiated lighting management policies. |
| format | Article |
| id | doaj-art-6c930a3cc5d34f70bab1f8d5558c0d27 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-6c930a3cc5d34f70bab1f8d5558c0d272025-08-20T03:45:49ZengNature PortfolioScientific Reports2045-23222025-07-0115112110.1038/s41598-025-10378-3Nighttime light intensity and brightness suitability in urban functional zonesMing Liu0Ruicong Li1Yiwei Li2Ezzaddeen Ali Mohammed Saeed AL-Mowallad3Chenglong Wu4Wenjing Wang5School of Architecture and Fine Art, Dalian University of TechnologySchool of Architecture and Fine Art, Dalian University of TechnologySchool of Architecture and Fine Art, Dalian University of TechnologySchool of Architecture and Fine Art, Dalian University of TechnologySchool of Architecture and Fine Art, Dalian University of TechnologySchool of Architecture and Fine Art, Dalian University of TechnologyAbstract The identification and distribution of urban functional zones play a crucial role in optimizing urban planning and resource allocation. The differences in brightness of the nocturnal light environment further reveal the characteristics of urban functions. This study takes the main urban area of Dalian as an example, integrates Point of Interest and OpenStreetMap data to generate functional zone samples, and proposes a multi-scale evaluation framework at the levels of administrative districts, streets, and blocks, combined with Luojia-1 night-time remote sensing imagery. The results show that: (1) Significant differences in brightness exist among functional zones within the study area, and there is a mismatch between actual demand and nighttime light brightness; (2) The Average Nighttime Radiance per Unit Area and Brightness Factor can more accurately reflect the distribution characteristics of urban nighttime light brightness; (3) Clustering based on the Brightness Factor reveals over-bright and under-bright blocks, identifying commercial and port-industry areas as hotspots of excessive nighttime lighting. This study dissects the spatial heterogeneity of the nocturnal light environment from the perspective of urban functional zoning and provides quantitative support for the development of differentiated lighting management policies.https://doi.org/10.1038/s41598-025-10378-3Multi-source dataUrban functional areasNighttime remote sensing imageryNighttime light environment distributionAppropriateness evaluationLight risk area |
| spellingShingle | Ming Liu Ruicong Li Yiwei Li Ezzaddeen Ali Mohammed Saeed AL-Mowallad Chenglong Wu Wenjing Wang Nighttime light intensity and brightness suitability in urban functional zones Scientific Reports Multi-source data Urban functional areas Nighttime remote sensing imagery Nighttime light environment distribution Appropriateness evaluation Light risk area |
| title | Nighttime light intensity and brightness suitability in urban functional zones |
| title_full | Nighttime light intensity and brightness suitability in urban functional zones |
| title_fullStr | Nighttime light intensity and brightness suitability in urban functional zones |
| title_full_unstemmed | Nighttime light intensity and brightness suitability in urban functional zones |
| title_short | Nighttime light intensity and brightness suitability in urban functional zones |
| title_sort | nighttime light intensity and brightness suitability in urban functional zones |
| topic | Multi-source data Urban functional areas Nighttime remote sensing imagery Nighttime light environment distribution Appropriateness evaluation Light risk area |
| url | https://doi.org/10.1038/s41598-025-10378-3 |
| work_keys_str_mv | AT mingliu nighttimelightintensityandbrightnesssuitabilityinurbanfunctionalzones AT ruicongli nighttimelightintensityandbrightnesssuitabilityinurbanfunctionalzones AT yiweili nighttimelightintensityandbrightnesssuitabilityinurbanfunctionalzones AT ezzaddeenalimohammedsaeedalmowallad nighttimelightintensityandbrightnesssuitabilityinurbanfunctionalzones AT chenglongwu nighttimelightintensityandbrightnesssuitabilityinurbanfunctionalzones AT wenjingwang nighttimelightintensityandbrightnesssuitabilityinurbanfunctionalzones |