Global disparities in CO2 emissions from mobility sectors of diverse economies: A macroscopic exploration across 188 countries/regions

被引:0
作者
Zhang, Bailing [1 ]
Kang, Jing [2 ]
Feng, Tao [1 ,3 ]
机构
[1] Hiroshima Univ, Grad Sch Adv Sci & Engn, Higashihiroshima 7398511, Japan
[2] Waseda Univ, Waseda Inst Adv Study, Tokyo 1698050, Japan
[3] Eindhoven Univ Technol, Dept Built Environm, NL-5600 MB Eindhoven, Netherlands
基金
日本学术振兴会; 日本科学技术振兴机构;
关键词
Global disparities; CO; 2; emissions; Mobility sectors; Macroscopic exploration; Qualitative study; EMISSIONS; REGRESSION; IMPACT;
D O I
10.1016/j.indic.2024.100455
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Reducing CO2 2 emissions represents a global challenge, and the mobility sectors account for a considerable portion of total emissions, with marked disparities across diverse economies. Viewed from a macroscopic perspective, countries and regions around the world can be categorized in various ways. However, relying on a single or a few indicators often proves inadequate to meet the classification requirements for carbon reduction and sustainable development. In this study, employing machine learning and guided by 10 economic indicators, we classified 188 countries/regions into 6 identifiable clusters. Subsequently, by applying ratio analysis and random forest methodologies, we conducted a matrix-based analysis that elucidates the distinct emission characteristics of each mobility sector. Feature importance analysis revealed that for highly developed economies, the total population's contribution was significant, especially in domestic and international aviation, accounting for 50% and 25% of emissions, respectively. In contrast, for lower-middle-income countries and regions, while the total population still played a pivotal role, its influence was most pronounced in railway transportation, reaching 67%. For rapidly developing economies, domestic aviation emissions reached a peak influence of 61%. These insights emphasize the necessity for strategies tailored to the unique attributes of economic entities.
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页数:10
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