基于文献计量的公路运输碳排放综述OA

Based on bibliometric methods,this study systematically analyzes 2,635 publications on road transportation carbon emissions from the CNKI and WOS core databases between 2005 and 2025.The findings reveal that research in this field has evolved through three distinct phases,namely"initial exploration-steady development-rapid deepening,"and has entered a highly active stage driven by China's"Dual Carbon"goals.Knowledge structure analysis indicates that domestic research forms a single-core network centered on"carbon emissions,"focusing on policy-responsive topics such as multimodal transport and route optimization.In contrast,international studies construct a multi-centered network characterized by the integration of"methods-environment-emissions-energy,"emphasizing interdisciplinary approaches and micro-level environmental impact analysis.The evolutionary trajectory shows a linear progression from"basic accounting to systematic governance"in domestic research,while international research follows a path from"macro-assessment to micro-level governance."Future studies are expected to advance toward refined governance,methodological sophistication,and systemic perspectives,providing theoretical and practical foundations for the low-carbon transition of road transportation.