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Um Contributo para a Delimitação da Área Metropolitana do Noroeste de Portugal

Author

Listed:
  • Rui Ramos

    (Universidade do Minho)

  • António Rodrigues da Silva

    (Escola Eng. de São Carlos - Universidade de São Paulo)

Abstract

O objectivo deste artigo é apresentar uma proposta de nova delimitação da área metropolitana do noroeste de Portugal, a partir da actual Região Metropolitana do Porto. A proposta apresentada, que constitui uma opção para evitar os confrontos permanentes que podem resultar dos critérios políticos essencialmente subjectivos, assenta na evolução socioeconómica observada a partir dos dados dos Censos de 1991 e 2001, e explora duas vertentes da Análise Espacial: Estatística Espacial e Modelação Espacial. Desta forma, técnicas de Análise Exploratória de Dados Espaciais (Exploratory Spatial Data Analyses - ESDA) permitem identificar características locais específicas que podem vir a ser usadas numa Modelação Dinâmica das variáveis relevantes para a região em estudo. Assim, pela análise da localização de cada zona no contexto geográfico e em cada um dos quatro quadrantes do gráfico de Moran é possível delimitar regiões a partir de zonas que podem ser consideradas como uniformes, relativamente à variável analisada. No entanto, essas regiões podem não corresponder a regiões metropolitanas se a variável em análise não traduzir aspectos positivos num contexto de desenvolvimento. Um outro aspecto problemático desta análise simplificada pode ser a escassez, ao longo do tempo, de dados que garantam a qualidade da análise das variáveis. Contudo, a regularidade dos Censos permite alguma sustentabilidade para projecções, até porque a análise não é feita directamente sobre os valores das variáveis, mas pela delimitação de zonas de acordo com a dinâmica das relações de vizinhança, conforme aqui demonstrado. A abordagem proposta constitui uma opção promissora para as abordagens integradas e holísticas que se fazem necessárias para a delimitação de áreas metropolitanas, principalmente se combinada com outras estratégias que permitam identificar formas de arranjos espaciais não contíguos que porventura possam constituir áreas metropolitanas ou cidades polinucleadas (como constelações, cachos ou clusters).

Suggested Citation

  • Rui Ramos & António Rodrigues da Silva, 2003. "Um Contributo para a Delimitação da Área Metropolitana do Noroeste de Portugal," RPER, Associação Portuguesa para o Desenvolvimento Regional, issue 3, September.
    • Handle: RePEc:apd:rper00:y:2003:i:3:id:112
    DOI: 10.59072/rper.vi3.112
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    References listed on IDEAS

    as
    1. Luc Anselin & Shuming Bao, 1997. "Exploratory Spatial Data Analysis Linking SpaceStat and ArcView," Advances in Spatial Science, in: Manfred M. Fischer & Arthur Getis (ed.), Recent Developments in Spatial Analysis, chapter 3, pages 35-59, Springer.
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