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Typologies have always played an important role in urban planning and design practice and formal studies have been central to the field of urban morphology. These studies have predominantly been of a historical-qualitative nature and do not support quantitative comparisons between urban areas and between different cities, nor offer the precise and comprehensive descriptions needed by those engaged in urban planning and design practice. To describe contemporary urban forms, which are more diffuse and often elude previous historic typologies, systematic quantitative methods can be useful but, until recently, these have played a limited role in typo-morphological studies. This paper contributes to recent developments in this field by integrating multi-variable geometric descriptions with inter-scalar relational descriptions of urban form. It presents typologies for three key elements of urban form (streets, plots and buildings) in five European cities, produced using statistical clustering methods. In a first instance, the resulting typologies contribute to a better understanding of the characteristics of streets, plots and buildings. In particular, the results offer insight into patterns between the types (i.e., which types are found in combination and which not) and provide a new large scale comparative analysis across five European cities. To conclude, we establish a link between quantitative analysis and theory, by testing two well-known theoretical propositions in urban morphology: the concept of the burgage cycle and the theory of natural movement.

During the COVID-19 pandemic, physical distancing, mobility restrictions and self-isolation measures were implemented around the world as the primary intervention to prevent the virus from spreading. Urban life has undergone sweeping changes, with people using spaces in new ways. Stockholm is a particularly relevant case of this phenomenon since most facilities, such as day care centres and schools, have remained open, in contrast to cities with a broader lockdown. In this study, we use Twitter data and an online map survey to study how COVID-19 restrictions have impacted the use of different locations, services and amenities in Stockholm. First, we compare the spatial distribution of 87,000 geolocated tweets pre-COVID-19 and during the COVID-19 pandemic. Second, we analyse 895 survey responses asking people to identify places they ‘still visit’, ‘use more’, ‘avoid’ and self-report reasons for using locations. The survey provides a nuanced understanding of whether and how restrictions have affected people. Service and seclusion were found to be important; therefore, the accessibility of such amenities was analysed, demonstrating how changes in urban habits are related to conditions of the local environment. We find how different parts of the city show different capacities to accommodate new habits and mitigate the effects of restrictions on people’s use of urban spaces. In addition to the immediate relevance to COVID-19, this paper thus contributes to understanding how restrictions on movement and gathering, in any situation, expose more profound urban challenges related to segregation and social inequality.

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This paper describes a new approach in urban ecological design, referred to as social–ecological urbanism (SEU). It draws from research in resilience thinking and space syntax in the analysis of relationships between urban processes and urban form at the microlevel of cities, where social and ecological services are directly experienced by urban dwellers. The paper elaborates on three types of media for urban designers to intervene in urban systems, including urban form, institutions, and discourse, that together function as a significant enabler of urban change. The paper ends by presenting four future research frontiers with a potential to advance the field of social–ecological urbanism: (1) urban density and critical biodiversity thresholds, (2) human and non-human movement in urban space, (3) the retrofitting of urban design, and (4) reversing the trend of urban ecological illiteracy through affordance designs that connect people with nature and with each other.

ForewordIn recent years there has been much debate within urban studies as to which came first in the evolution of human settlements, the countryside or the city. There was always a third context to this discussion, however, and that was the suburb. Life beyond the city walls was a distinctive feature of ancient urban civilisations from Persia to Minoan Crete, and today in the Anglophone world the suburban population is a majority. How surprising, then, that few scholars have attempted to understand the nature and agency of suburban living as a dominant characteristic of human settlements. This was symptomatic of a wider academic indifference and even hostility towards 'the suburban' which has only (ridiculously) recently been challenged by a new generation of scholars who take suburbs seriously.Suburban Urbanities is a hugely important contribution to understanding our suburban world. Drawing upon scholarship within the now rapidly expanding field of suburban studies, synthesising historical geography with space syntax theories and methods, and the sociology of everyday life, it sheds new light on the historic and spatial evolution of the city. It shows that suburbia is not a synchronic caricature of a life-less-lived, but a dynamic context of metropolitan agency and creativity. As an historic process, suburbanisation is not something that evolved beyond the city to suck the life out of it, but was intertwined with trajectories of growth, with the socioeconomic patterning and structuring of cities large and small. It is impossible to grasp the meaning of class relations, of gendered lifestyles, of ethnic segregation and integration, of urban economies and patterns of mobility and communications, without placing suburbia at the forefront of the analysis. The universality of the themes of Suburban Urbanities is obvious: the dynamics of growth are significant historically because suburbs are starting points in change over time, not the end of the line. Old suburbs were once new, and today's new suburbs, springing up rapidly across the world, will one day be old. As dynamic environments they continue to act as vectors of social, economic and political development, locally, nationally and globally.The book is timely in another important sphere, and that is the personal subjectivity of suburbanites. To those who live in them, suburban lives viii FOrEWOrD have meaning. Back in 2013, I went for a walk in Fort Totten, an AfricanAmerican suburb of Washington, DC. On a sweltering August lunchtime, as I took photographs of the comfortable suburban homes of middle-class black people in roads that were empty except for flowering trees and parked cars, a woman's voice called out to me with a gentle but audible 'good afternoon'. Across her neatly trimmed front lawn I began chatting with a woman in her sixties who was taking tea with a friend on her veranda. She had left downtown DC in 1976 and as she stated with some passion, 'I couldn't wait to get out'. Fort Totten had its problems, but it was an attractive and spacious plac...

Recent empirical research has confirmed the importance of green infrastructure and outdoor recreation to urban people’s well-being during the COVID-19 pandemic. However, only a few studies provide cross-city analyses. We analyse outdoor recreation behaviour across four Nordic cities ranging from metropolitan areas to a middle-sized city. We collected map-based survey data from residents (n = 469–4992) in spring 2020 and spatially analyse green infrastructure near mapped outdoor recreation sites and respondents’ places of residence. Our statistical examination reveals how the interplay among access to green infrastructure across cities and at respondents’ residential location, together with respondents’ socio-demographic profiles and lockdown policies or pandemic restrictions, affects outdoor recreation behaviour. The results highlight that for pandemic resilience, the history of Nordic spatial planning is important. To support well-being in exceptional situations as well as in the long term, green infrastructure planning should prioritise nature wedges in and close to cities and support small-scale green infrastructure.

Flooding is one of the most destructive natural disasters which have rapidly been growing in frequency and intensity all over the world. In this view, assessment of the resilience of the city against such disturbances is of high necessity in order to significantly mitigate the disaster effects of flooding on the city structures and the human lives. The aim of this paper is to develop a method to assess the resilience of a river city (the city of Gothenburg in Sweden), which is prone to flood Hazard, against such disturbances. By simulating flood inundation with different return periods, in the first step, the areas of impact are determined. To assess the resilience, two different methods are followed. One is a syntactic method grounded in the foreground network in space syntax theory and the other is based on measuring accessibility to the essential amenities in the city. In the first method, similarity and sameness parameters are defined to quantitatively measure the syntactic resilience in the city. In the next step, accessibility to amenities and the minimum distance to amenities before and after each disturbance is measured. The results, in general, show that such disturbances affect the city structure and the resilience of the city differently. For instance, the city is more resilient after flooding according to accessibility measures. This clearly means that the answer to the question of resilience is mainly dependent on "resilience of what and for what."