Greener and larger neighbourhoods make cities more sustainable! A 2D urban economics perspective

We analyse urban growth forms by means of a 2D microeconomic model where households value green space at neighbourhood scale. We analytically demonstrate that cities can grow more densely when households have the possibility to enlarge the neighbourhood in which they value green space, thus emphasiz...

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Bibliographic Details
Published in:Computers, environment and urban systems environment and urban systems, 2015-11, Vol.54, p.82-94
Main Authors: Caruso, Geoffrey, Cavailhès, Jean, Peeters, Dominique, Thomas, Isabelle, Frankhauser, Pierre, Vuidel, Gilles
Format: Article
Language:English
Subjects:
Compact City
Garden City
Geography
Humanities and Social Sciences
Leapfrogging
Neighbourhood unit
Urban economics
Urban simulation
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Summary:We analyse urban growth forms by means of a 2D microeconomic model where households value green space at neighbourhood scale. We analytically demonstrate that cities can grow more densely when households have the possibility to enlarge the neighbourhood in which they value green space, thus emphasizing the importance of neighbourhood planning in particular for facilitating short trips and views of green amenities. We also show by simulation that the size and form of the city, relative to the size and form of neighbourhoods, impact on the decision of households to leapfrog land or not, thus impacting on the emergence of scattered urbanisation patterns. We conclude that carefully addressing the spatial arrangement of green space and buildings and facilitating trips within neighbourhood units constitute an effective policy lever and an attractive way to deliver more sustainable cities. We further argue that our theoretical experiment with complementary analytical and computer-based simulation provides micro-economic reasoning to the main elements of the Garden City and neighbourhood unit planning concepts. •2D urban growth simulation model grounded in microeconomics•First mathematical analysis of leapfrog sprawl in 2D•The size and the form of the city impact on the decision to leapfrog land.•Enlarging and greening neighbourhoods increase both density and residential utility.•Planners should further consider the local arrangement and access to green space.
ISSN:0198-9715
1873-7587
DOI:10.1016/j.compenvurbsys.2015.06.002