Search results for "urban sprawl"
showing 10 items of 48 documents
¿Metrópolis dispersas?
2010
La cuestión de la dispersión urbana constituye hoy un tema de investigación alrededor del cual se ha ido concentrando el interés disciplinar y político-institucional. Tal interés encuentra su respuesta en datos estadísticos (EEA, 2006) que confirman que: el 75% de la población europea vive en áreas urbanas; más de un cuarto del territorio europeo resulta urbanizado, y según las estimaciones en 2020 aproximadamente cerca del 80% de los europeos vivirá en áreas urbanas. Es un campo de la investigación todavía abierto y sobre el cual este trabajo de tesis ha querido reflexionar, siendo consciente que en urbanismo el conocimiento es una acción cognitiva y, al mismo tiempo, proyectual. Por lo ta…
The impractical supremacy of the local identity on the worthless soils of Mappano
2016
Introduction Soil is under pressure worldwide. In Italy, in the last two decades, land consumption has reached an average rate of 8 m2, demonstrating the failure of urban planning in controlling these phenomena. Despite the renewed recognition of the central role of soil resources, which has triggered numerous initiatives and actions, soil resources are still seen as a second-tier priority. No governance body exists to coordinate initiatives to ensure that soils are appropriately represented in decision-making processes. Global Soil Partnership draws our attention to the need for coordination to avoid fragmentation of efforts and wastage of resources. Both at a global and at a local level, …
How green neighbourhoods make cities more compact?t? A 2D microeconomic perspective
2014
National audience; We analyse the emergence of scattered residential development, a key characteristic of sprawl. We analyse a 2D urban economic model with neighbourhood interactions among households (social contacts) and with farmers (who produce green amenities). Starting from a cross-shaped road network and CBD, we analytically establish the existence and characteristics of residential leapfrogging that breaks up the compact development of the city. We extend our analysis by numerical experiments based on observed or econometrically estimated parameters. We nd that the shape of built up areas in uences the decision or not to jump over undeveoped land or to stick to the contiguous urban f…
Fractal dimension versus density of built-up surfaces in the periphery of Brussels
2007
International audience; This paper aims at showing the usefulness of the fractal dimension for characterizing the spatial structure of the built-up surfaces within the periurban fringe. We first discuss our methodology and expectations in terms of operationality of the fractal dimension theoretically and geometrically. An empirical analysis is then performed on the southern periphery of Brussels (Brabant Wallon). The empirical analysis is divided into two parts: first, the effect of the size and shape of the windows on the fractal measures is empirically evaluated; this leads to a methodological discussion about the importance of the scale of analysis as well as the real sense of fractality…
Managing Metro Manila
2017
Metro Manila residents are confronted everyday with the challenges of flooding, substandard housing and horrendous traffic. In this low altitude plain, any significant rainfall raises water levels in many small streams, and contributes to traffic jams. The rapid population growth of the metropolis has led to the proliferation of squatter areas, including alongside flood-prone rivers and railroad tracks. The lack of discipline and of decent garbage management contribute in turn to a worsening of floods when streams are covered with litter. The fast rise in motorization rates, coupled with the many imperfections of the public transport system, make Manila one of the most congested cities in t…
A NEW DIALETICS CENTRE/PERIPHERY: CONSUMPTION PATTERNS AND PRACTICES IN THE SUBURBAN AREAS
2014
This paper deals with the analysis of current changes which have been recently shaping unprecedented urban structures in some suburban areas, due to the emerging of new consumptions spaces. In particular, the work aims at highlighting the effect of urban sprawl on the main Sicilian metropolitan areas, also moulded by the diffusion of the suburban retailing formats, in order to evaluate to what extent these dynamics have been contributing to the configuration of new urban landscapes and unprecedented socio-economic structures, not to mention the support in the process of containing social and economic marginalisation.
On poles and centers: Cities in the French style
2005
International audience; The “multicentric city” is an oversimplified view of the contemporary city. The term “center” covers a multi-faceted reality. A center is not only a concentration of activities. It also means domination,power, creation and interaction. Consequently, the “secondary centers” do not necessarily replicate the main center and they are clearly differentiated. We define the “pole” as a concentration ofactivities, whatever their nature, and the “center” as a concentration of high-order and strategic activities, so that the so-called multicentric cities may be both multipolar and monocentric. This suggests what we call the Multipolar-Monocentric hypothesis.The paper sets out …
Costa Blanca: Urban Evolution of a Mediterranean Region through GIS Data
2015
This paper investigates the international retirement migration from elderly northern Europeans into Spain and its influence on expansion of urban sprawl there. Key themes analyzed in this paper include the urban sprawl expansion during the Spanish housing bubble, and the link between lifestyle migrants and urban sprawl development. This paper considers the reasons for moving to Spain, which are chiefly related with the climate and lifestyle. It also explores the benefits and drawbacks of these en masse lifestyle migration and the environmental and landscape impacts on Mediterranean Spain. In order to visualize better this international migration we have created some GIS maps from a GIS proj…
On the use of fractal dimensions for qualifying urban sprawl : an application on the wallon built-up areas
2005
International audience
The anthropogenic sealing of soils in urban areas
2009
The sealing of soils by impervious materials is, normally, detrimental to its ecological functions. Exchanges of energy, water and gases are restricted or hampered and an increasing pressure is being exerted on adjacent, non sealed areas. The negative effects span from loss of plant production and natural habitats to increased floods, pollution, and health risks and consequently higher social costs. Environmental Agencies produce periodical reports where the phenomenon of soil consumption by urban infrastructures is monitored with extremely sophisticated geographical tools but little specific research is available that describes the effects of soil sealing. This paper reviews some recent co…