HUN-REN KRTK Regionális Kutatások Intézete

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Browsing HUN-REN KRTK Regionális Kutatások Intézete by Author "Baka, Dorián"

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    Measuring and predicting long-term land cover changes in the functional urban area of Budapest
    (2020) Lennert, József; Farkas, Jenő Zsolt; Kovács, András Donát; Molnár, András; Módos, Rita; Baka, Dorián; Kovács, Zoltán
    The loss of farmland to urban use in peri-urban areas is a global phenomenon. Urban sprawl generates a decline in the availability of productive agricultural land around cities, causing versatile conflicts between nature and society and threatening the sustainability of urban agglomerations. This study aimed to uncover the spatial pattern of long-term (80 years) land cover changes in the functional urban area of Budapest, with special attention to the conversion of agricultural land. The paper is based on a unique methodology utilizing various data sources such as military-surveyed topographic maps from the 1950s, the CLC 90 from 1990, and the Urban Atlas from 2012. In addition, the multilayer perceptron (MLP) method was used to model land cover changes through 2040. The research findings showed that land conversion and the shrinkage of productive agricultural land around Budapest significantly intensified after the collapse of communism. The conversion of arable land to artificial surfaces increased, and by now, the traditional metropolitan food supply area around Budapest has nearly disappeared. The extent of forests and grasslands increased in the postsocialist period due to national afforestation programs and the demand of new suburbanites for recreational space. Urban sprawl and the conversion of agricultural land should be an essential issue during the upcoming E.U. Common Agricultural Policy (CAP) reforms
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    Urban sprawl and land conversion in post-socialist cities: The case of metropolitan Budapest
    (2019) Kovács, Zoltán; Farkas, Jenő Zsolt; Egedy, Tamás; Kondor, Attila Csaba; Szabó, Balázs; Lennert, József; Baka, Dorián; Kohán, Balázs
    Former state-socialist cities were described by the literature as compact and relatively dense urban forms. However, the political transition of 1989–90 has changed the spatial characteristics of these cities, partly due to urban sprawl. Yet, we do not know if such a phenomenon as “sprawl” did exist before 1989. The main aim of this paper is to assess urban expansion in the metropolitan region of Budapest during state-socialism and after the political changes, and measure the intensity of urban sprawl. The main thesis is that urban sprawl did not start with the advent of market forces in 1989–90, but it was already present during state-socialism, however the tempo of sprawl was considerably increased by suburbanization, the dominant form of urban expansion, after 1990. In order to explore the longitudinal land use changes in the Budapest metropolitan region we analyse standardised databases and maps (e.g. military topographic map from 1959, Corine Land Cover database from 1990 and European Urban Atlas from 2012). The discussion is focused, on the one hand, on the growth of urbanized land as an outcome of urban sprawl and the main underpinning factors in different epochs and, on the other hand, on the main driving forces of suburbanization and sprawl. Research results clearly show that urban sprawl has intensified around Budapest after the political changes. This was the result of a complex interplay of socio-economic and political factors, a process driven by the free movement of residents, firms, as well as the reshuffle of the regulatory framework. The study demonstrates that urban sprawl has several negative impacts on social, economic and environmental sustainability in the investigated metropolitan region, which is in line with findings of the literature.