Cities in the times of COVID-19: Trends, impacts, and challenges for urban sustainability and resilience

Since the beginning of the COVID-19 outbreak, understanding its impacts on cities has received much attention in science and policy circles. This paper systematically reviews the literature on the interface of the pandemic and urban sustainability. The objective is to portray the impacts brought by the COVID-19 outbreak in urban environments within the sustainability framework and to detect trends and challenges for future research. The paper follows a methodology that integrates both bibliometric and systematic review approaches. The first approach relies on bibliometric analysis to provide an overview of the landscape of main trends on this nexus. The second approach presents a content analysis that deepens the work by outlining the impacts of the pandemic and the challenges that emerged on five different key topics for urban sustainability. The role of resilient urban planning is discussed as an integrative concept to face diverse challenges in the construction of sustainable cities in a post-pandemic scenario. Likewise, the study deliberates on future research topics related to resilient urban planning, social equity, healthy urban environments, sustainable mobility, and circular economy. This review serves as a guide for researchers and urban planners to understand emerging challenges and future research trends in urban sustainability.