Spatial insights for sustainable transportation based on carbon emissions from multiple transport modes: A township-level case study in China

Understanding the CO₂ emissions and influencing factors of travelers' multiple modes can provide direction for energy conservation and emission reduction, which is of great significance for developing sustainable cities. Previous studies focused on the CO₂ emissions of the transportation sector or individual modes. Which has overlooked the variations of emissions within the transport system. Hence, this study focuses on multiple modes (i.e., car, subway, bus, and bike) in the township in the Guangdong-Hong Kong-Macao Greater Bay Area. This study proposes a framework for exploring the spatial autocorrelation of urban transport emission structure based on ratios (i.e., CO₂ emissions from each mode divided by total emissions) and key factors by combining spatial econometric model (i.e., Moran's I index and Spatial Error Model) and machine learning model (i.e., Random Forest and SHAP model). In addition, the spatial autocorrelation of ratios at different spatial scales is investigated. The results indicate the high spatial dependence in the ratios from each transport mode and Moran's I indices for four ratios are 0.883, 0.886, 0.706, and 0.776, respectively. In addition, subway and car ratios exhibit a negative spatial correlation (−0.798), and subway and bike show a positive correlation (0.570). Population density, road length, and land use diversity are the key drivers of CO₂ emission ratios and have different effects on various transport modes. Furthermore, as the spatial scales expand from townships to distinct and city, the spatial autocorrelation of the ratios decreases. This study could provide policy implications for optimizing urban transport strategies and reducing CO₂ emissions.

• Record URL:
  • https://doi.org/10.1016/j.cities.2024.105405
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S026427512400619X
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02642751
• Supplemental Notes:
  • © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. Abstract reprinted with permission of Elsevier.
• Authors:
  • Zhi, Danyue
  • Song, Dongdong
  • Chen, Yan
  • Yang, Yitao
  • Zhao, Hepeng
  • Wang, Ting
  • Wu, Hao
  • Song, Weize
  • Yang, Xiaobao
  • Liu, Yongtao
• Publication Date: 2024-12

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 105405
• Serial:
  • Cities
  • Volume: 155
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0264-2751
  • Serial URL: http://www.sciencedirect.com/science/journal/02642751

Subject/Index Terms

• TRT Terms: Carbon dioxide; Cluster analysis; Exhaust gases; Spatial analysis; Transportation modes; Urban transportation
• Geographic Terms: Guangdong-Hong Kong-Macao Greater Bay Area (China)
• Subject Areas: Environment; Highways; Pedestrians and Bicyclists; Public Transportation; Railroads;

Filing Info

• Accession Number: 01934432
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 18 2024 2:15PM