This study investigates the geographic and annual variations in carbon dioxide (CO2) emissions and fuel consumption generated by private vehicles across Australia's regions over an 18-year period (2002 to 2020). We examine the influence of vehicle numbers, geography, and time on emissions and fuel consumption using spatial analysis alongside panel regression. Emissions remain relatively high in North Queensland, the Northern Territory, and South West Western Australia and Greater Sydney had steepest decline among the metropolitan regions. Modelling results reveal that higher numbers of internal combustion engine vehicles are positively associated with higher CO2 emissions and fuel usage while higher numbers of electric vehicles are negatively associated. This underscores the importance of targeting high-emission regions for transitioning to electric vehicles. The current study provides empirical insights that hold important implications for policymakers concerning the spatial and temporal trends in private vehicle emissions with the potential to inform low-carbon transport planning.

中文翻译：

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请注意差距：研究私家车二氧化碳排放和燃料消耗的地区差异 - 澳大利亚的案例


本研究调查了 18 年期间（2002 年至 2020 年）澳大利亚各地区私家车产生的二氧化碳 （CO2） 排放和燃料消耗的地理和年度变化。我们使用空间分析和面板回归来检查车辆数量、地理位置和时间对排放和燃料消耗的影响。北昆士兰州、北领地和西澳大利亚州西南部的排放量仍然相对较高，大悉尼地区的排放量在大都市地区中下降幅度最大。建模结果表明，内燃机汽车数量的增加与较高的 CO2 排放量和燃料使用量呈正相关，而电动汽车数量的增加则呈负相关。这凸显了针对高排放地区过渡到电动汽车的重要性。目前的研究提供了实证见解，对政策制定者关于私家车排放的空间和时间趋势具有重要意义，并有可能为低碳交通规划提供信息。