GSD Scholarly Articles

Since the contemporary version of urban planning emerged in the nineteenth century, the field has been centrally concerned with the issue of density. Planners have variously tried to solve problems created by densities that were too high or too low, manipulate densities via regulations and infrastructure investments, and search for optimal density patterns to achieve social and environmental goals. Density has been of particular interest because, depending on the topic, different density levels and types appear to cause problems or create benefits, can typically be measured and compared with some precision, and are amenable to manipulation via the toolkit of urban and regional planning strategies. Here, Forsyth defines and classifies planning-related densities proposing that measured planning-relevant densities come in two types--discrete and proportional--both with area in the denominator of the calculation.

The concept of “urban forest” (UF) is gaining momentum in urban planning in the context of climate adaptation. Principles from the field of urban forestry are mainstreamed into urban planning, but little is known about effective tools for the successful implementation of new UFs. This article presents explorative research comparing how three cities (Almere, Madrid, and Boston) are dealing with the planning of a UF project, and their alignment with distinct organisational and typological interpretations of a UF. We employed a mixed-methods approach to gain insights into the main goals of the project, their organisational structure, and the employed planning process through the analysis of project documents and expert interviews. Our results point to an effective mainstreaming of environmental questions among stakeholders, but also indicate a poor development of objective criteria for the success of a UF. We note that municipal planners circumvented current internal rigidities and barriers by relying on intermediaries and local academia as providers of external knowledge, or by facilitating experiments. Finally, our results show that there may not be just one UF type to achieve the desired environmental and social goals and overcome implementation barriers. Conversely, each of the governance and organisational models behind the implementation of each type present collaborative and mainstreaming challenges. Therefore, we see an opportunity in further research examining processes and institutions towards the collaborative building of UFs that could bridge gaps between top-down and bottom-up approaches and activate different types of agencies.

The effects of metro system development and urban form on housing prices are highly depend on the spatial temporal conditions of the urban neighborhoods. However, scholars have not yet comprehensively examined these interactions at a neighborhood-scale. This study assesses metro access, urban form, and property value at both district- and neighborhood-levels. The study area is Pudong, Shanghai where metro system development has coincided with rapid urban growth. Two hundred and seventy-nine neighborhoods from 13 districts of Shanghai are randomly selected for the district-level investigation and 31 neighborhoods from Pudong are selected for neighborhood-level investigation. The analysis of variance shows that metro access is more positively correlated to property price in Pudong than other districts. The Pearson correlation, principle component, and ordinary least square regression analyses show that while accessibility attributes have positive influence on housing prices, neighborhood characteristics also exhibit pronounced impact on property price change over time. The present study extends our knowledge on how metro system development interacts with land use efficiency and discusses planning policies that correspond to different stages of development.

For more than a century the idea of building new towns has captured the imagination of urban planners. Britain has been a centre of both theory and practice, particularly in the early years of the planned-town idea and in the golden period of new-town development from the Second World War to the middle of the 1970s (Forsyth and Peiser, 2020; Wakeman, 2016). While in the last decades of the twentieth century such developments became less common globally, a recent resurgence of activity in Asia, and increasingly elsewhere, has brought new attention to the type. Even the UK has announced a new round of garden-style developments (UK Ministry of Housing, Communities, and Local Government, 2018; National Health Service England, 2018).

This article develops the concept of recombinant urbanization to show how agrarian landed property and land‐based caste/class relations shape the production of post‐liberalization urban real estate markets in India. I focus on two interrelated but differentiated agrarian property regimes in western Maharashtra to argue that real estate development is building on prior uneven agrarian land markets, which were themselves sociotechnically produced by colonial and postcolonial development politics. Through an examination of the organizational form of sugar cooperatives, which mediated agrarian capitalism in an earlier era, I track how these primary agricultural cooperatives are now being reorganized into real estate companies, sometimes with former sugarcane growers as company shareholders. The same caste‐based political and social capital that made sugar cooperatives possible in a capitalist agrarian society is now being leveraged by agrarian elites to ease their own and their constituents’ entry into an urbanizing economy. The concept of recombinant urbanization opens new methodological entryways to analyze the entangled agrarian and urban question in predominantly agrarian and late liberalizing societies.

In China, a centralized planning culture has created similar neighborhoods across the country. Using a survey of 1,048 individuals conducted in 2016 in Chengdu—located in a carefully conceptualized typology of neighborhood forms—we analyzed the associations between individual and neighborhood characteristics and active or nonmotorized transport behavior. Using several multiple logistic and multilevel models, we show how neighborhoods were categorized and how the number of categories or neighborhood types affected the magnitude of the associations with active transport but not the direction. People taking non-work trips were more likely to use active compared with motorized modes in all neighborhood types. Neighborhood type was significant in models but so too were many other individual-level variables and infrastructural and locational features such as bike lanes and location near the river. Of the 3-D physical environment variables, floor area ratio (a proxy for density) was only significant in one model for nonwork trips. Intersection density and dissimilarity (land-use diversity) were only significant in a model for work trips. This study shows that to develop strong theories about the connections between active transport and environments, it is important to examine different physical and cultural contexts and perform sensitivity analyses. Research in different parts of China can help provide a more substantial base for evidence-informed policymaking. Planning and design recommendations were made related to active transport need to consider how neighborhoods, built environments, and personal characteristics interact in different kinds of urban environments.

Urban parks can offer both physical and psychological health benefits to urban dwellers and provide social, economic, and environmental benefits to society. Earlier research on the usage of urban parks relied on fixed distance or walking time to delineate urban park catchment areas. However, actual catchment areas can be affected by many factors other than park surface areas, such as social capital cultivation, cultural adaptation, climate and seasonal variation, and park function and facilities provided. This study advanced this method by using mobile phone data to delineate urban park catchment area. The study area is the 23 special wards of Tokyo or tokubetsu-ku, the core of the capital of Japan. The location data of over 1 million anonymous mobile phone users was collected in 2011. The results show that: (1) the park catchment areas vary significantly by park surface areas: people use smaller parks nearby but also travel further to larger parks; (2) even for the parks in the same size category, there are notable differences in the spatial pattern of visitors, which cannot be simply summarized with average distance or catchment radius; and (3) almost all the parks, regardless of its size and function, had the highest user density right around the vicinity, exemplified by the density-distance function closely follow a decay trend line within 1–2 km radius of the park. As such, this study used the density threshold and density-distance function to measure park catchment. We concluded that the application of mobile phone location data can improve our understanding of an urban park catchment area, provide useful information and methods to analyze the usage of urban parks, and can aid in the planning and policy-making of urban parks.