Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/46799
Title: Evolução das leis de escala urbanas: evidências do Brasil
Other Titles: Evolution of urban scaling: evidence from Brazil
Keywords: Leis de escala
Cidades
Sistemas complexos
Sistema urbano brasileiro
Scaling laws
Brazilian urban system
Cities
Complex systems
Issue Date: Jun-2020
Publisher: Rede Lusófona de Morfologia Urbana/ Portuguese-Speaking Network of Urban Morphology (PNUM)
Citation: MEIRELLES, J. et al. Evolução das leis de escala urbanas: evidências do Brasil. Revista de Morfologia Urbana, Porto, v. 8, n. 1, e00168, 2020. DOI: https://doi.org/10.47235/rmu.v8i1.168.
Abstract: During the last years, the new science of cities has been established as a fertile quantitative approach to systematically understand the urban phenomena. One of its main pillars is the proposition that urban systems display universal scaling behavior regarding socioeconomic, infrastructural and individual basic services variables. This paper discusses the extension of the universality proposition by testing it against a broad range of urban metrics in a developing country urban system. We present an exploration of the scaling exponents for over 60 variables for the Brazilian urban system. Estimating those exponents is challenging from the technical point of view because the Brazilian municipalities’ definition follows local political criteria and does not regard characteristics of the landscape, density, and basic utilities. As Brazilian municipalities can deviate significantly from urban settlements, urbanlike municipalities were selected based on a systematic density cut-off procedure and the scaling exponents were estimated for this new subset of municipalities. To validate our findings we compared the results for overlaying variables with other studies based on alternative methods. It was found that the analyzed socioeconomic variables follow a superlinear scaling relationship with the population size, and most of the infrastructure and individual basic services variables follow expected sublinear and linear scaling, respectively. However, some infrastructural and individual basic services variables deviated from their expected regimes, challenging the universality hypothesis of urban scaling. We propose that these deviations are a product of top-down decisions/policies. Our analysis spreads over a time-range of 10 years, what is not enough to draw conclusive observations, nevertheless we found hints that the scaling exponent of these variables are evolving towards the expected scaling regime, indicating that the deviations might be temporally constrained and that the urban systems might eventually reach the expected scaling regime.
URI: http://repositorio.ufla.br/jspui/handle/1/46799
Appears in Collections:DFI - Artigos publicados em periódicos

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