Urban sprawl is a process shaping the space of contemporary urban areas. The costs generated by this phenomenon force central and local authorities to adopt and implement a spatial policy limiting those costs. However, there is no method in Polish spatial policy that determines the extent of this phenomenon around cities, and thus identifies the area of intervention. Therefore, the purpose of the article is to propose a method of delimitation of urban areas at risk of urban sprawl. The proposed method of delimitation honors the characteristics of urban sprawl relating to spatial structure, socio-economic processes and efficiency of spatial policy. The method can be useful for conducting spatial policy aimed at reducing costs due to urban sprawl. It particularly pertains to the policy implemented at the central and regional level. Research results indicate that, in most Polish urban areas, delimitations used thus far designate too little of the area around core cities. Although the goals of reducing the negative consequences of urban sprawl are formulated at the level of national spatial policy, the methods of delimitation used thus far do not take into account the specificity of this phenomenon. Underestimating the extent of urban sprawl results in a lack of effectiveness of spatial policy due to the omission of specific areas in public intervention. This particularity is related to the fact that these are usually external areas—the most distant from the core city. These areas have the highest costs for urban sprawl. At the same time, these are areas in the early stages of spatial growth, in which a consistent spatial structure can still be kept while implementing proper spatial policy.
Gospodarowanie przestrzenią jest zadaniem trudnym, zwłaszcza w kontekście ograniczoności dostępnych zasobów. Ponadto w związku z wytwarzaniem dóbr publicznych i prywatnych generowane są w przestrzeni miasta efekty zewnętrzne. Mając na względzie złożoność tego problemu, w artykule podjęto dyskusję teoretyczną na temat problematyki efektów zewnętrznych (spillover) w planowaniu zabudowy przestrzeni, zwłaszcza tych przeznaczanych pod zabudow ę mieszkaniową. Rozważania skupiono na ekonomicznych, ale także przyrodniczych oraz technologicznych efektach zewnętrznych towarzyszących gospodarce przestrzennej.
There are important relationships between the urban sprawl process and economic growth. They are usually expressed through spatial relations and changes taking place in the local, regional and national economy. The temporal and spatial dimension, including dispersed location, are the determinants of development and economic growth. Therefore, the urban sprawl phenomenon and the related location, hypothetically conditioning economic growth, should be subject to macroeconomic research. The article examines how urban sprawl affects the national budget and national economic growth. Unlike many studies where urban sprawl is studied by scattering the population around cities, we undertake more complex examination using buildings’ location. Urban sprawl, as we understand it, is a spontaneous spread of buildings around cities. To assess the spontaneity, we use a grid of squares with a side of 500 m. The squares are used to calculate the morphological indicators of urban sprawl. Therefore, quantified urban sprawl is one side of the equation; on the other side are macroeconomic variables. In this way, we examine the relationship between urban sprawl and the national budget and economic growth of Poland. The conclusions obtained are, e.g., urban sprawl does not have a negative effect on the national economy and the budget. This is a different conclusion from those thus far. There are also different conclusions on the regional level. Based on the research results, we formulate recommendations for national economic policy and spatial policy.
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