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<p>Urban roadside green spaces (RGS), characterized by their networked distribution, play a critical role in mitigating the adverse effects of vehicular emissions, particulate pollution, and urban heat islands. These green spaces provide essential ecosystem services, such as microclimate regulation, carbon sequestration, and pollutant interception, thereby enhancing the ecological quality of road environments. However, systematic understanding of the thresholds and influencing factors of their ecological benefits remains limited. This study employs CiteSpace to conduct a scoping review of the literature on the ecological benefits of RGS, aiming to comprehensively map the knowledge landscape of the field, track research progress, summarize research hotspots, and project future trends. Key findings include: (1) Research on RGS primarily focuses on their roles in improving thermal comfort, air quality, biodiversity, and climate resilience, while exploring the key factors influencing these benefits. Recent studies integrate perspectives from urban ecology, green infrastructure, and ecosystem services, incorporating concepts like “Nature-based Solutions” and “Ecosystem Services” to examine the impact of plant traits on ecological performance. (2) The ecological benefits of RGS are influenced by multiple factors, including green space structure, plant community and individual traits, environmental conditions, soil properties, and anthropogenic management practices.(3) Research on benefits related to disaster mitigation, soil improvement, and antimicrobial effects is relatively limited; additionally, there is insufficient analysis of synergistic mechanisms among multiple benefits and the impacts of external factors such as road type, traffic volume, surrounding land use, and building density. Future studies should develop a comprehensive evaluation framework integrating internal and external factors to elucidate the synergistic effects of multiple ecological benefits. Such advancements will optimize the ecological performance of RGS and contribute to sustainable urban development.</p>

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A review of roadside green space ecological benefits using citespace: research hotspots and future trends

  • 期刊论文

  • 发表日期：

    2026年3月30日

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  • Junjie Zhang,
  • Meng Yi,
  • Guiwei Zhang,
  • Guoxin Tang,
  • Junji Liu

摘要

Urban roadside green spaces (RGS), characterized by their networked distribution, play a critical role in mitigating the adverse effects of vehicular emissions, particulate pollution, and urban heat islands. These green spaces provide essential ecosystem services, such as microclimate regulation, carbon sequestration, and pollutant interception, thereby enhancing the ecological quality of road environments. However, systematic understanding of the thresholds and influencing factors of their ecological benefits remains limited. This study employs CiteSpace to conduct a scoping review of the literature on the ecological benefits of RGS, aiming to comprehensively map the knowledge landscape of the field, track research progress, summarize research hotspots, and project future trends. Key findings include: (1) Research on RGS primarily focuses on their roles in improving thermal comfort, air quality, biodiversity, and climate resilience, while exploring the key factors influencing these benefits. Recent studies integrate perspectives from urban ecology, green infrastructure, and ecosystem services, incorporating concepts like “Nature-based Solutions” and “Ecosystem Services” to examine the impact of plant traits on ecological performance. (2) The ecological benefits of RGS are influenced by multiple factors, including green space structure, plant community and individual traits, environmental conditions, soil properties, and anthropogenic management practices.(3) Research on benefits related to disaster mitigation, soil improvement, and antimicrobial effects is relatively limited; additionally, there is insufficient analysis of synergistic mechanisms among multiple benefits and the impacts of external factors such as road type, traffic volume, surrounding land use, and building density. Future studies should develop a comprehensive evaluation framework integrating internal and external factors to elucidate the synergistic effects of multiple ecological benefits. Such advancements will optimize the ecological performance of RGS and contribute to sustainable urban development.