doi: 10.18178/ijesd.2025.16.4.1537
Comprehensive Assessment of Urban Greening and Environmental Quality Based on Multi-Source Data Fusion: A Case Study of Hitachi City
Dongmin Yin1
,
Terumitsu Hirata2,*
- 1Department of Urban and Civil Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
- 2Department of Urban and Civil Engineering, Faculty of Applied Science and Engineering, Ibaraki University, Hitachi, Japan
- Manuscript receivedDecember 10, 2024
- revisedMarch 19, 2025
- acceptedMarch 31, 2025
- publishedAugust 5, 2025
Abstract
As urbanization accelerates, environmentalchallenges such as air pollution, noise, urban heat islands, andbiodiversity loss have intensified. Urban greening is widelyrecognized as a key strategy for improving environmentalquality. This study introduces the Urban GreeningEnvironmental Quality Index (UGEQI), a multi-source datafusion model integrating the Green View Index (GVI),Normalized Difference Vegetation Index (NDVI), Air QualityIndex (AQI), Land Surface Temperature (LST), and noisepollution. Applied to Hitachi City, Japan, results show anaverage GVI of 22.40%, below the 25% satisfaction threshold,with notable differences across road types (e.g., highways: 25%,residential roads: 17.6%). NDVI exhibits substantial seasonalvariation, peaking at 0.31 in summer and dropping to 0.18 inwinter. The UGEQI model assigns weights using the entropymethod: NDVI (24.7%), GVI (24.6%), LST (19.2%), noise(16.9%), and AQI (14.5%). Regression analysis (R² = 0.690)confirms a strong correlation between GVI and NDVI,highlighting their interdependence. These findings emphasizethe need for targeted greening strategies, particularly in denseurban areas. The UGEQI model serves as a replicableframework for cities facing similar environmental challenges,aiding in developing more effective urban greening strategies toenhance environmental quality and residents’ well-being.
Keywords
- urban greening
- environmental quality
- multi-source data fusion
- green view index
- NDVI
- UGEQI
How to Cite
Dongmin Yin and Terumitsu Hirata, "Comprehensive Assessment of Urban Greening and Environmental Quality Based on Multi-Source Data Fusion: A Case Study of Hitachi City," International Journal of Environmental Science and Development, vol. 16, no. 4, pp. 293-305, 2025. https://doi.org/10.18178/ijesd.2025.16.4.1537
Copyright & License
Copyright © 2025 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).