Urban green infrastructure and its role in sustainable cities: A comprehensive review

Urban Green Infrastructure (UGI) plays a pivotal role in shaping sustainable cities by integrating natural elements into the urban landscape. This comprehensive review explores the multifaceted contributions of UGI towards enhancing environmental quality, social well-being, and economic resilience in urban settings. As cities continue to grapple with challenges such as climate change, air and water pollution, and the urban heat island effect, UGI emerges as a key solution for fostering urban sustainability. The review delves into the various components of UGI, encompassing green spaces, urban forests, green roofs, and permeable surfaces. It examines how these elements collectively contribute to mitigating environmental issues by absorbing carbon dioxide, reducing air pollutants, and attenuating the impacts of extreme weather events. Additionally, UGI serves as a biodiversity hotspot, supporting diverse flora and fauna within urban boundaries. Beyond its environmental benefits, UGI significantly influences social dynamics and well-being. The presence of green spaces fosters recreational opportunities, promotes mental health, and strengthens community cohesion. Accessible and well-designed green infrastructure contributes to equitable distribution of environmental benefits, addressing environmental justice concerns in urban areas. Economically, UGI proves to be an asset for cities by enhancing property values, reducing energy consumption through temperature regulation, and supporting local businesses. The review explores successful case studies of cities that have effectively implemented UGI to achieve sustainable urban development, drawing insights into best practices and potential challenges. This comprehensive review underscores the integral role of Urban Green Infrastructure in creating sustainable and resilient cities. By addressing environmental, social, and economic dimensions, UGI emerges as a holistic approach that aligns with the evolving needs of urban populations and the imperatives of a sustainable future. Understanding the intricacies of UGI implementation provides a foundation for policymakers, urban planners, and researchers to collaboratively work towards fostering greener, healthier, and more sustainable urban environments.