Urban evolutions: The fast, the slow, and the still

• 成果类型: Article
• 署名作者: Duranton, Gilles
• 署名单位: University of Toronto
• 刊物名称: AMERICAN ECONOMIC REVIEW
• ISSN/ISSBN: 0002-8282
• DOI: 10.1257/aer.97.1.197
• 发表日期: 2007
• 页码: 197-221
• 关键词: zipfs law; SPATIAL EVOLUTION; cities; EMPLOYMENT; industry; DYNAMICS; GROWTH

摘要

With the use of French and US data, new and systematic evidence is provided about the rapid location changes of industries across cities (the fast). Cities are also slowly moving up and down the urban hierarchy (the slow), while the size distribution of cities is skewed to the right and very stable (the still). The model proposed here reproduces these three features. Small, innovation-driven shocks lead to the churning of industries across cities. Then, cities slowly grow or decline following net gains or losses of industries. These changes occur within a stable distribution. The quantitative implications of the model are also explored.