Warming associated with urban development will be exacerbated in future years by temperature increases due to climate change. The strategic implementation of urban green infrastructure (UGI) e.g. street trees, parks, green roofs and facades can help achieve temperature reductions in urban areas while delivering diverse additional benefits such as pollution reduction and biodiversity habitat. Although the greatest thermal benefits of UGI are achieved in climates with hot, dry summers, there is comparatively little information available for land managers to determine an appropriate strategy for UGI implementation under these climatic conditions. We present a framework for prioritisation and selection of UGI for cooling. The framework is supported by a review of the scientific literature examining the relationships between urban geometry, UGI and temperature mitigation which we used to develop guidelines for UGI implementation that maximises urban surface temperature cooling. We focus particularly on quantifying the cooling benefits of four types of UGI: green open spaces (primarily public parks), shade trees, green roofs, and vertical greening systems (green walls and facades) and demonstrate how the framework can be applied using a case study from Melbourne, Australia.

In 1974, with a relatively young and fast-growing city in front of them, the City Council of Phoenix, Arizona charged the Phoenix Planning Commission with studying potential plans for urban form. Through the help of over 200 citizens over the next eight months, the village concept was born. Characterized by an emphasis on community-level planning, unique neighborhood character, and citizen input, the village concept plan provides an compelling lens into decentralized planning. In 1979, the Village Concept, as part of the “Phoenix Concept Plan 2000,” was officially adopted by the Phoenix City Council and has remained a component of the city’s long-range planning ever since. Each village features a core of dense commercial and residential activity, with a surrounding periphery featuring varied densities and land usage. There were nine original villages outlined in 1979. As of today, there are 15 villages. Each village has a Village Planning Committee (VPC) made up of 15 to 21 citizens, each being appointed to the committee by the Phoenix Mayor and City Council. This exploratory study was born out of an interest in the Village Planning Committees and a desire to understand their function as a mechanism for citizen participation in urban planning and urban governance. Similarly, with the rapid onset of the automobile and freeway expansion in the decades after WWII, once-insolated communities in the Valley have become connected to each other in a way that raises questions about how to maintain neighborhood’s unique character while promoting sustainable growth and expansion of the city. Phoenix’s Urban Village Model attempts to answer those questions. The efficacy of the model can be considered from two perspectives––how does it aid in making land use decisions, and how does it promote citizen participation? While there is an extensive body of literature on neighborhood councils in the United States and plentiful analysis of the merits of such models as participatory mechanisms and devices of urban planning, there is a lack of discussion of Phoenix’s Urban Village Model. This thesis aims to include Phoenix in this growing body of work.