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Metropolitan regions can be regarded as economic areas comprising various sub-economies with different forms of economic and spatial organization. The purpose of this article is to undertake a critical appraisal of the vision of Berlin as a 'service metropolis' through empirical observation of sectoral trends and locational patterns in the city, and to establish that Berlin's urban area is a major production space with a complex fabric of specialized production districts. This spatial organization will be examined in terms of the level of agglomeration of various sub-economies with special reference to the formation of local enterprise clusters in the Berlin economic area. Berlin's specialization profile and the employment trend in the city compared with other metropolitan cities in Germany make it clear that the metropolis of Berlin is under threat as a production space, and this threat partly stems from the way in which the real estate business has developed in the Berlin area.  相似文献   
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There is growing interest in the German‐Polish border area's future status in the changing regional structure of Europe—contrasting scenarios contain, on the one hand, a vision of the region as a new ‘tiger’ region, and are seen at the other extreme as a ‘drainage area’ on the outskirts of the EU. In this article, border areas are treated from a point of view that pays more attention to the regions’ system of production and regulation. The first part deals with some general characteristics of border areas; the second part outlines in more detail the specific developmental conditions of the German‐Polish border area, especially the region between Berlin and Poznan along the middle part of the River Oder (comprising the Euro Region Pro Europa Viadrina). Three aspects of the border region's developmental conditions are emphasized: the region's quality of location within Europe and the respective national territories; the permeability of the border; and the economic structure in the border area, whereby forms of trans‐border economic linkage and cooperation are of particular interest. The last section discusses new challenges for European border areas as posed by economic change and the restructuring of the European spatial fabric.  相似文献   
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This paper examines the interaction between local retail markets and population density in cities. We demonstrate that welfare costs of urban sprawl need not come only from road congestion or environmental externalities, as often suggested in the literature. A city also forgoes potential agglomeration economies in retail when it settles into a spatially sprawling equilibrium. Our theory predicts an additional spatial equilibrium where the city is inefficiently dense, characterized by strong retail agglomeration economies within the core.  相似文献   
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