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Themes and Models of Services
AP Human Geography Urban Land Use Unit
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For today, 04/20 Do I have your Urban System Range & Threshold Analysis? You will need your note-taking weapons. Arm yourselves!
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Development and Tertiary Employment
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Types of Services Consumer Services: provides services to customers
Examples: retail, education, health, leisure & hospitality Business Services: facilitate other businesses Examples: financial, professional, transportation Public Services: provide security and protection Examples: police, government, educators
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Specialization of Services
Cancun, Mexico Las Vegas, USA
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U.S. Growth Since the 1970s, U.S. has seen a decrease in the secondary sector and a sharp increase in the tertiary sector.
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Clustering of Services
Central Business District (CBD) 3 main types of services: high threshold, high range, servicing CBD workers Compact: small % of area, large % of services Visually distinctive One of oldest parts High land costs lead to skyscrapers
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Christaller’s CPT showed that:
(1.) Larger a settlement, fewer there are (2.) Larger a settlement, farther away a similar size settlement is (3.) Range increases as the population increases (4.) The larger the settlement, the higher the order of its services (5.) Exceptions exist: tourist resort and dormitory town Small pop, many functions & large pop, few functions
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Market areas are arranged in a regular pattern
Market areas are arranged in a regular pattern. Larger settlements have both larger and smaller market areas drawn around them.
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The Gravity Model GM predicts the likelihood of 2 cities to interact regarding migration and services: (1.) Directly related to population - higher population = more potential customers (2.) Inversely related to range - farther away = less likely to use
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