Edited by Fabiano Lemes de Oliveira & Ian Mell. 2019, Springer, ISBN: 9783030018665
Steward Pickett (Cary Institute of Ecosystem Studies) reviews this book which explores the combination of natural and constructed elements in urban planning and design.
Green infrastructure has become one of the most common topics in contemporary environmental urbanism. Yet most urban planning still gives roads, buildings, and engineered infrastructure pride of place in the spatial planning process. This book espouses an alternative approach to planning cities. Rather than leading with the familiar concern with where to put bricks, mortar, concrete, and asphalt, editors de Oliveira and Mell have assembled a collection of nineteen chapters that show what might be gained by planning cities with nature as a more central component. Such “planning cities with nature” goes beyond the classic dichotomy between city and nature, advocating for planning cities as true mixtures of natural and constructed elements for the benefit and wellbeing of residents.
Green infrastructure, the main tool for accomplishing the better integration of the built and the biological in urban places, is a broad palate of interventions. It includes greenbelts, large parks, wetlands, and extensive streamside vegetation. But it also includes some kinds of campuses, public squares, vegetation cover of residential parcels and rights of way, private gardens, and yards. Although green walls and green roofs are considered in some chapters, most of the attention is given to green infrastructure rooted in earth, recognizing the many forms and scales of such green, blue, and combined blue-green or “turquoise” infrastructure. Most examples come from Brazil and the UK, though there is discussion of cases from India, China, and Finland, for example. The book succeeds in giving voice to the green infrastructure concerns of the Global South.
The book is aimed at academics primarily, although the scope of disciplines is broad. The richness of perspectives is informative, but the mixture of professional languages and jargons can make for difficult reading in some cases. History and current reality are in dialogue in many chapters. Practitioners and policy makers are among the authors of individual chapters, so their perspectives do appear. However, the book will be most useful to students and educators who wish to advance training about, and advocacy of, green planning rubrics. This book would be a very useful source in urban planning and urban design studios, both for the variety of frameworks it presents, and for the number of cases discussed in detail. The book can also alert planners in cities and regions of rich new ways to think about and integrate green spaces and functions in their work. However, this is not a “how to” book; rather it is deals more with “why to” and “what to,” supported by diverse disciplinary perspectives and the successes and constraints of greening plans and case studies from many ecological, social, and political situations.
The book is a very useful summary of current thinking and examples of the changing role of green infrastructure in cities. Although the chapters are all planning or design oriented, each reflects a different approach to green infrastructure. No discipline dominates the discussion. Rather, readers are exposed to contrasting views of this complex topic. Readers will benefit from diverse perspectives across the chapters. Important contrasts include, for example:
Such contrasting motivations show just how inclusive the thinking on green infrastructure must be.
Yet, individual motivations of green infrastructure are also explored in depth. For example, the classic forms of green wedges and green rings inform much thinking about green infrastructure networks, and these forms are usefully compared and contrasted with built urban forms, such as grid, linear, concentric, and radial. Surprisingly, although these green forms were presented as powerful universals, they only appear to scaffold a few of the later chapters.
Additional motivations among the chapters include the philosophical and cultural differences that characterize different cases. This richness of thought will be helpful for researchers as they plan or interpret data on green infrastructure. Some of the many examples include how Chinese and Western environmental and cultural philosophy are associated with different motivations for urban greening, although neither is a guarantee of sustainability. Another intriguing motivation is a Brazilian artistic idea of the “no-stop city” which promotes an integrated and flexible view unifying city and countryside, interestingly related to hybrid provision of agricultural and economic production. A radical Viennese artistic movement is used to further illustrate the natural-built hybridity that green planning requires, rather than Modernist separation of nature and urbanity. This impulse toward hybridity does not always succeed, but it is a useful filter for signaling the shortcomings of past approaches to city design and planning that have led to the need to “renature” cities – to use a term common throughout the book.
Not only are diverse motivations presented, but it is clear that motivations for green infrastructure shift through time. One cogent example is how green space as a part of Brazilian university campuses has changed through time. This history shows the integration of changing drivers, such as spatial constraints as Brazil increasingly urbanizes, an evolving educational philosophy, and growing concerns for social equity. High level legal and policy motivations also appear in some of the cases. For example, the changing legal framework for planning in Brazil was used to illustrate shifts in the locus of authority in planning as well as shifts in style away from Modernist separation of functions and forms.
This book promotes a post-modernist, multi-functional approach to planning in general, and to green infrastructure in particular. Planning in many instances still operates as an exercise in separating big blocks of pure kinds of territory across an urban area. Green infrastructure planning that follows ecological principles – meaning both technical and value statements -- and which puts people first in a framework of “People, Policy, Options, and Scale”, require a much more nuanced, green/gray/blue approach to integrated urban design. The planning with nature framework requires use of both fine and coarse scale relationships.
An important theme in the book is difference or diversity. The first dimension of difference is that green infrastructure itself is a very heterogeneous category, based on intended function and designed structure. The second dimension is that the locations – in social, ethical, technological, and ecological senses – of green infrastructure installations and networks are also heterogeneous. The book explores the complexity at this intersection of heterogeneities, and provides scholars, students, and practitioners with examples of how the intersections have been or can be addressed.
This book is emphasizes several key themes across the richness of its disciplinary and national viewpoints. Many chapters emphasize social values in their framings. Social equity is a normative guide in many chapters, although it is necessarily expressed differently in different cases because social hierarchies are shaped by different distinctions – race, color, caste, wealth, national origin, etc., in various countries.
The book is a mix of the empirical, philosophical, and theoretical. Some chapters are nicely supported by data on benefits of green infrastructure. Others are more assertions of the value and need for green infrastructure. The book, like the field of green infrastructure more broadly, espouses many definitions. And like this field at large, some of the definitions are vague, leading to the statement that “green infrastructure has not yet stabilised as a concept” (p. 200). The range of definitions emphasize commonly articulated values and characteristics of green infrastructure: multifunctionality, positive human benefits, networked structure, and continued investment through time. Perhaps more attention could have been paid to the negatives that sometimes attend green infrastructure, such as tree senescence and mortality, vegetation maintenance, leaf litter and trash removal, and repair of constructed components. In addition, disempowered social groups or residents may have legitimate concerns with gentrification that can follow neighborhood greening. There is a tendency to neglect the likelihood that any green infrastructure installation or network will have social or economic costs that may not be equally borne by all social groups. Still, placing green infrastructure as functional networks at a more central position in planning, as this book recommends, can have very positive effects on new and renatured cities.
Readers should be aware that copyediting in this volume is uneven, and there are cases where typos completely obscure the meaning of a few sentences. There are also complex, unclear, and badly cast sentences that appear all too frequently through the volume. Readers may be required to do a little grammatical archeology in places. Such lapses should not appear in a book priced at €156.
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