Localisation des activités : un modèle bisectoriel avec coûts de transport
[eng] Location of activities : a two-sectors model with transportation costs P. Krugman is arguing that a reduction of manufactured goods transportation costs favors concentration of industrial activity. In an economy with two sectors - the « agricultural » one being characterized by perfect competition and positive transportation costs (they equal zero in P. Krugman's model) -, we show that tendancy to concentration vanishes when transportation costs reduce sufficiently. An important remaining problem is connected with variations of agents' relative utilities. [fre] Selon P. Krugman , dans une économie où coexistent deux secteurs, l'un en concurrence monopolistique, l'autre en concurrence parfaite, la réduction des coûts de transport des biens du premier secteur favorise la concentration géographique des activités. Nous montrons que, s'il y a un coût de transport positif pour les biens du deuxième secteur, cette tendance à la concentration disparaît pour de fortes réductions des coûts de transport dans le premier secteur. Mais les enjeux portent aussi, alors, sur l'évolution du bien-être relatif des agents.
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Volume (Year): 46 (1995)
Issue (Month): 3 ()
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- Paul Krugman, 1990.
"Increasing Returns and Economic Geography,"
NBER Working Papers
3275, National Bureau of Economic Research, Inc.
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