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1、JournalofUrbanEconomics69(2011)240–252ContentslistsavailableatScienceDirectJournalofUrbanEconomicswww.elsevier.com/locate/jueAneweconomicgeographymodelofcentralplacesa,?b,c,dTakatoshiTabuchi,Jacques-Fran?oisThisseaFacultyofEconomics,UniversityofTokyo,JapanbCORE
2、,UniversitécatholiquedeLouvain,BelgiumcPSE,FrancedCEPR,UnitedKingdomarticleinfoabstractArticlehistory:Oneofthemoststrikingfeatureofthespace-economyisthatcitiesformahierarchicalsystemexhibitingReceived30October2009someregularityintermsoftheirsizeandthearrayofgoo
3、dstheysupply.InordertoshowhowsuchaRevised9November2010hierarchicalsystemmayemerge,weconsideramodelwithmonopolisticallycompetitivemarketsforAvailableonline19November2010theindustrialsectors.Astransportcostssteadilydecreasefromlargevalues,theurbansystemformedbyse
4、veralsmallcitiesentailsstructuralchangesinthatsomecitiesexpandattheexpenseoftheothersJELclassi?cation:byattractingagrowingnumberofindustries.Beyondsomethreshold,somecitiesdisappearfromtheF12space-economy.Suchanevolutionoftheurbansystemdescribesfairlywellwhathas
5、beenobservedR12invarioushistoricalperiodsthathaveexperiencedmajorchangesintransportationtechnologiesand/Keywords:orpoliticaluni?cation.Urbansystemó2010ElsevierInc.Allrightsreserved.MonopolisticcompetitionTransportcostsCitybirthanddeath1.IntroductionSpeci?cally,
6、wehavecomputedtheratioofthepopulationinthetop?veurbanagglomerationstothetotalpopulationineachOECDThemainthrustofneweconomicgeographyisthatsteadilycountryhavingatleast?veagglomerationswithmorethan1decreasingtransportcostsfostertheagglomerationofeconomic750,000in
7、habitantsovertheperiod1950–2005.Thisleavesusactivitiesinasmallnumberofurbanregions.Tacklingtheforma-with10countries.Byfocussingontheshare,insteadofthelevel,tionoftheurbansystemfromthisangleisespeciallyrelevantofurbanpopulationwecontrolfortheurbanpopulationgrowt
8、h,because,eversincethebeginningoftheIndustrialRevolution,whileretainingOECDcountriesallowsustoavoidcomparingthetransportsectorhasundergonethemoststunningchanges.countrieshav
