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001-es BibID:BIBFORM055596
Első szerző:Csomós György (geográfus)
Cím:Identification of Megacities and their Vertical and Horizontal Classification in the Period from 1950 to 2050 / György Csomós
Megjegyzések:As a result of its explosive rise since the second half of the 20th century, the population of the world has tripled in comparison with 1950. In 2009, the number of inhabitants living in cities was over the number of people inhabiting rural areas, while from 75 in 1950 the number of cities with more than 1 million inhabitants is expected to increase to 553 by 2050. Nevertheless, the most evident forms of the march of urbanization are megacities, i.e. those urban agglomerations where extremely large populations are concentrated. One important problem of defining megacities is the determination of an optimum population threshold that is the establishment of the population value over which an urban agglomeration can be regarded to be a megacity. This article has been divided into two main sections: the first section relies on a relatively objective method to determine the optimum population threshold value of megacities, whereas the second section makes use of the World Bank and UN's country classification to arrange the same cities into groups. With the help of the various classifications, the vertical and horizontal shifting of megacities in the period from 1950 to 2050 becomes clearly apparent.
Tárgyszavak:Természettudományok Földtudományok előadáskivonat
Megjelenés:7th International Scientific Conference Book of Proceedings / ed. Ivica Filipovic, Marina Klacmer Calopa, Fran Galetic. - p. 259-269. -
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