Urban Models for APHug 6.5

Mr. Sinn

Bid Rent Theory

A theory that explains how land value and land use change as distance from the central business district (CBD) increases. It states that land becomes cheaper as one moves farther away from the CBD, impacting the spatial layout of settlements and the types of buildings constructed.

CBD (Central Business District)

The commercial and often geographic heart of a city where businesses, offices, and services are concentrated. It is typically characterized by high land values and intense land use.

Burgess Concentric Model

An urban model developed by sociologist Ernest Burgess in the 1920s, which describes a city as a series of concentric rings emanating from the CBD, with different land use zones based on socio-economic status.

Sector Model

An urban model developed by Homer Hoyt in the 1930s, which emphasizes the role of transportation routes in shaping the development of sectors or wedges within a city, with certain activities concentrated in specific areas.

Harris and Ullman Multiple Nuclei Model

An urban model that suggests cities have multiple centers of activity or nuclei, each attracting specific land uses, businesses, and populations based on their characteristics and functions.

Galactic Model

An urban model developed in the 1960s that reflects a post-industrial city with a decentralized pattern of development, accounting for advancements in technology, transportation, and the shift towards a service-based economy.

Latin American City Model

An urban model found in cities across Latin America, influenced by European colonization, characterized by a central plaza or square surrounded by government and religious buildings, reflecting the historical impact of European urban planning on the region.

Central Business District (CBD)

The central area of a city where commercial and business activities are concentrated.

Zone of Maturity

Area in a city with older homes and buildings.

Disamenity Zone

A part of the city where residents live in extreme poverty.

Informal Settlements

Areas with unplanned and unauthorized housing, such as squatter settlements or favelas.

Sub-Saharan African City Model

Urban model reflecting the impact of European colonization in Africa, characterized by three distinct CBDs and ethnic segregation.

Concentric Zone Model

Urban model where the city grows outward in concentric rings from the central business district.

Sector Model

Urban model where the city develops in sectors along transportation routes.

Southeast Asian City Model

Urban model influenced by a mix of concentric zone and sector models, centered around a port and historical trading posts.

Alien Commercial Zone

Area in a city that stimulates trade and investment.