Peri-urban areas have enormous potential to play a positive role in enhancing urban sustainability at the global level. This is because cities in all countries have to face the challenges posed by ...

Waste management represents a challenge for public authorities due to many reasons such as increased waste generation following urban population growth, economic burdens imposed on the municipal budget, and nuisances inevitably caused to the environment and local inhabitants. To optimize the system from a sustainability perspective, moving the transition towards a more circular economy, a better understanding of the different stages of waste management is necessary. A review of recently developed sustainability frameworks for waste management showed that no single framework captures all the instruments needed to ultimately provide a solid basis for comprehensive analyses of the potential burdens associated with urban waste management. Bearing this limitation in mind, the objective of this research is to propose a conceptual and comprehensive sustainability framework to support decision-making in waste management of European cities. The framework comprises a combination of methods capable of identifying future strategies and scenarios, to assess different types of impacts based on a life cycle perspective, and considers the value of waste streams, the actors involved, and possible constraints of implementing scenarios. The social, economic, environmental, technical and political domains are covered, and special attention is paid to impacts affecting foremost the local population.

The Amsterwarm project investigates the urban heat island of Amsterdam, the vulnerability of its population, the energy efficiency of its buildings and landuse. A novel mapping approach provides insights into the questions of what causes the urban heat island and who will be affected by it. Landuse does affect the surface temperature. The difference between the areas in the city with the least and the greatest impervious surface coverage accounts for an average land surface temperature difference of 11.6℃ per hectare. The study demonstrates furthermore that the vulnerability of people and buildings to the urban heat island effect is a local condition in which the energy efficiency of buildings, quality of life and demographic factors should all be considered in an approach that is sensitive to place. Practical application: The typological maps will allow local authorities to prioritise adaptive actions in urban planning in response to the urban heat island, an emerging climate-related challenge that has a significant impact on the comfort and health of its citizens and on the (future) energy use required for cooling buildings. Raising the albedo in those areas of the city that are dominated by impervious surface cover seems an effective adaptation strategy, suitable to a city such as Amsterdam that no longer builds on green field sites but only builds as possible within the envelope of the existing city. Improving the quality of life in neighbourhoods and the energy efficiency/climate proofing of the building stock could also be prioritised in the identified neighbourhoods.

A shift towards a more Circular Economy is crucial to achieve a more sustainable and inclusive built environment that meets future demands. Circular Economy is a promising concept for industry and society. If implemented well, Circular Economy can deliver environmental benefits and economic advantages for which innovation is essential. To achieve a resource-efficient built environment the Circular Economy should be developed and implemented systemically and on a large scale, going beyond cities. To realise this, local authorities, citizens, and other stakeholders need a collaborative and science-informed decision environment that allows for developing different waste and resource management options, and assessing their impacts on the environment, resilience, spatial quality and quality of life. The articles in this special issue all discuss different aspects of research to deliver solutions and strategies for a circular economy in urban planning throughout Europe, focusing on peri-urban locations. The first rticle introduces Living Labs as a methodology to co-create circular solutions and strategies with local stakeholders. The second article focuses on governance for the shift towards a Circular Economy, unravelling hindrances and revealing objectives, whereas the third article develops a means to transfer circular strategies and solutions from one location to another. The fourth article presents an open-source tool based on the geodesign approach which links the co-creation of design proposals to impact simulations informed by geographic contexts, systems thinking, and digital technology—the Geodesign Decision Support Environment. Finally, the fifth article presents the first results of incorporating the concept of Circular Economy in an integrative manner in urban design and planning courses.

The Circular Economy (CE) is receiving interest worldwide as a way to overcome the currently dominating linear and wasteful production and consumption models of our society. Currently the implementation of CE thinking into practice is still in an early stage. As the main hubs of consumption and to a more limited extent also, production, metropolitan areas often are seen as crucial to achieving a successful transition towards a CE, and therefore it is necessary to find ways to integrate a CE based approach into urban planning practice. In this paper literature dealing with the concept of the CE is reviewed within an urban planning framework to examine how well integrated it is in the built environment, both vertically and horizontally, in ideas prevalent in CE literature. The paper aims to contribute to the understanding of how the concept of CE can be integrated into urban planning practice with a view to enabling urban planners to integrate CE into their work to further accelerate the implementation of CE in metropolitan areas. In this paper a framework is presented for understanding opportunities for the integration of CE into urban planning.