City2City

Smart, Sustainable and Resilient cities: the Power of Nature-based Solutions

Report
Monday, 2 August, 2021

Smart, Sustainable and Resilient cities: the Power of Nature-based Solutions

by the United Nations Environment Programme (UNEP) | 23 July 2021

Cities are engines for development and provide opportunities for innovation and interaction. But cities can also exacerbate some of the world’s most serious environmental and socioeconomic challenges, and at the same time, citizens and urban infrastructure are vulnerable. For cities to make peace with nature, we need to plan and design cities and urban infrastructure with nature in mind.

Nature-based Solutions (NbS) can help cities address urgent and fundamental environmental challenges by bringing ecosystem services back into cities and rebalancing cities’ relationships with their surrounding areas. By accelerating the implementation of NbS, decision-makers can help cities adapt to the effects of climate change, reduce urban heat island effects and cooling needs in buildings, clean air, manage water.

This report, produced by UNEP and UNDP in close collaboration with the Italian Presidency of the G20, investigates the potential of NbS to help build smart, sustainable and resilient cities, drawing from more than a decade of research and experience from G20 countries and beyond. It offers an overview of the best practices of NbS implementation in cities around the world, and a set of guiding principles to improve territorial governance and establish multi-level governance frameworks to increase the impact and coherence of policies and private investments.

The goal is to inspire further action by national governments and city authorities to enhance NbS in cities to reduce their vulnerability to climate change. In this framework, Covid-19 recovery plans offer a great opportunity to scale up NbS in cities, with a view to building back better in ways that protect, conserve, and restore our ecosystems and their services, while addressing the social and economic challenges of urban areas and significantly reducing environmental impacts.

Read the full report here