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Scholarship on Nature-based Solutions (NbS) primarily focuses on the potential for NbS to deliver multiple benefits to humans and biodiversity from networked natural systems. These approaches, if enacted without sensitivity to local contexts and histories, can deepen long standing injustices resulting from the destruction of complex self-organizing ecological systems, the usurpation of Indigenous governance and knowledge, and the prioritization of technical managerial approaches transforming nature into infrastructure. Here we review, synthesize, and critically reflect on existing scholarship on the rise of NbS in New York City, USA, to inform environmental policy in support of just transformations of complex urban systems. To do so, we examine NbS within the context of the social-ecological-technological system (SETS) of NYC. We organize our review and synthesis around three interrelated concepts of justice: Ecological, Indigenous Environmental, and Infrastructural Justice. Ecological Justice entails addressing the harms, needs, and desired futures of ecological actors while identifying synergies with human focused environmental justice concerns and movements. Indigenous Environmental Justice requires restoring Indigenous systems of governance and knowledge while making space for a diversity of social-ecological practices of marginalized communities. Infrastructural Justice addresses the historical and ongoing injustices perpetuated through mainstream infrastructure policy and design practice – including Environmental Justice concerns – which have increasingly turned towards NbS. Without embedding these principles within emergent NbS focused environmental policy agendas seeking just transformations, they will likely recreate utilitarian, anthropocentric, and colonial modes of managing nature as infrastructure. We conclude with a research-to-action agenda for meeting the interdependent needs of urban ecosystems and humans. • Dominant NbS approaches do not consider social or ecological justice. • NbS can be made more just by integrating concepts of Ecological, Indigenous Environmental, and Infrastructure Justice. • Applying these concepts within case study of NYC, USA, we identify opportunities for improving research and practice. • Explicitly including justice goals in NbS reorients policy at multiple levels. [ABSTRACT FROM AUTHOR]

In New York City (NYC), the early period of the COVID-19 pandemic in the spring of 2020 induced a significant shift in the use and accessibility of urban green spaces (UGS). To understand the impact of COVID-19 on the access to UGS, we conducted a spatial analysis of geographic access to UGS and perceived access based on data collected from a social survey deployed from May 13 to June 15, 2020. We examine geographical accessibility to UGS and how this compares to perceived accessibility, or the ease which residents feel they can access a UGS. We further explored the correlation between spatial access to UGS and fifteen social vulnerability variables including economic status, household composition, minority status, and housing type for different zip codes. The results show that geographical proximity variables can predict a number of the perceived access variables, particularly those related to COVID-19 measures. Although lower-income communities were found to have higher spatial access to UGS, many of the same communities, including people living in crowded and multi-unit buildings, on average only have access to smaller green spaces, suggesting an uneven distribution of larger quality parks. This observation is further confirmed by survey results. These findings have implications for policies surrounding the distribution of UGS and whether equitable access is provided to NYC residents, with implications for similar patterns that may exist in other cities. • We compare geographical access to urban green spaces (UGS) with perceived access. • Geographical accessibility can predict perceived concerns regarding social distancing. • UGS environmental justice implications are related to perceptions of UGS qualities. • We overlap COVID-19 vulnerabilities with the availability of UGS at the zip code level. • Many working-class neighborhoods are highly impacted by COVID-19 and have smaller UGS. [ABSTRACT FROM AUTHOR]