Internal Structure of Cities - Summary

Essential Question on Urban Structure

Various models and theories explain the internal structure of cities, focusing on functional zones and land use.

Urban Models Overview

Urban models categorize land use, revealing spatial segregation and location of urban activities. They include the central business district (CBD), industrial zones, and residential zones.

Zones in Urban Areas

  1. Central Business District (CBD): The commercial hub of a city, with land values peaking near the center due to bid-rent theory. Higher services and transport focus are evident here. Residential density is high, typically characterized by apartment buildings.

  2. Industrial/Commercial Zones: Located outside the CBD, these areas are dedicated to manufacturing and industry, often kept away from residential zones due to pollution.

  3. Residential Zones: Areas separating from CBD and industrial zones, typically organized by income levels and socioeconomic factors.

Urban Models Explained

  1. Concentric Zone Model: Proposed by E.W. Burgess, this model describes cities as rings around the CBD, with specific social groups residing in each zone based on income and proximity to the center.

  2. Sector Model: Developed by Homer Hoyt, it shows how different land uses extend outward in wedges from the CBD, revealing a pattern of socio-economic stratification.

  3. Multiple-Nuclei Model: Created by Chauncy Harris and Edward Ullman, this model illustrates cities as a patchwork of multiple centers, each serving distinct functions.

  4. Galactic City Model: Reflects suburban growth with multiple nodes, where the CBD functions are distributed across multiple smaller downtowns, often linked by transportation routes.

Regional Models

Urban structures differ globally:

  • European Cities: Historically influenced by medieval designs, dense and less planned; rely on older infrastructure.

  • Latin American Cities: Feature a commercial spine with disamenity zones and favelas, displaying a stark contrast in living conditions based on distance from the city center.

  • African Cities: Rapidly changing with new urban developments and informal economic zones, where traditional CBDs exist alongside emerging structures.

  • Southeast Asian Cities: Typically develop around former colonial ports, incorporating distinctive Chinese commercial zones and industrial parks as cities expand.