Nature-based solutions are defined as the use of natural ecological functions to address societal challenges, such as economic damage costs of extreme hydro-meteorological events (floods, droughts, storm surges, landslides). Nature-based solutions in land and water management can be flexible and multi-beneficial measure alternatives that will not only prevent and mitigate climate-related risks but also improve human well-being and further pave the way towards a more resource efficient, competitive and greener economy. However, adequate proof-of-concept for economic, social, and environmental benefits provided by nature-based solutions is needed to promote their inclusion in urban planning and decision-making processes.
This session aims to give an overview of nature-based solutions that are inspired and supported by natural analogues and can be expected to be cost-effective, and simultaneously provide environmental, social and economic benefits. The session promotes exchange of knowledge to discuss opportunities and challenges associated with the development and systematic use of nature-based solutions in cities, landscapes and seascapes. The session seeks presentations of studies aimed at better understanding advantages and disadvantages of nature-based solutions, and of pilot-scale applications, reviews of previous case studies and developments of new theoretical/analytical tools and methods. Contributions are also welcome regarding best practices and supporting methods and tools for decision makers, planners and other stakeholders in reducing hydro-meteorological risks and adapting to climate change.

Key words: nature-based solutions, sustainable urban development, natural resources management, climate change mitigation and adaptation, disaster risk reduction.