why are consumer services distributed in a regular pattern? chapter 12.3
TRANSCRIPT
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Why Are Consumer Services Distributed in a Regular Pattern? Chapter 12.3
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Central Place Theory- Walter Christaller (German) Central Place: a market center
for the exchange of goods and services by people attracted from the surrounding area
Markets are centrally located to
maximize accessibility
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Central Place Theory
Area surrounding a service that attracts customers= market area= nodal region
Consumers travel to the closest nodal
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Size of Market AreaNeed the services range and
threshold to determine the services market area ◦Range: maximum distance people
are willing to travel to use a service How far are you willing to travel for
groceries? How far are you willing to travel for a
football game? Typically expressed in time, not distance. Hexagon shape
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Size of Market Area Threshold: the minimum number of
people needed to support the service. ◦How this is counted depends on the
product: Movie theaters= young people Chiropractors= old people Thrift stores= poorer people (or Macklemore) Upscale department stores= wealthier people Amusement parks= Nightclubs=
◦Only the customers this services appeals to should be counted
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Market Area Analysis
Profitability of a Location ◦Compute the range
Survey residents
◦Compute the threshold ◦Draw the market area
Draw range and make sure that it matches or exceeds the necessary threshold
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Market Area Analysis: Optimal location within a market
Optimal location in a linear settlement ◦ Location that
minimizes the distance you must travel to all potential customers
◦ Half the customers are to the north, half to the south
What if: uneven distribution north and south; buildings are apartments: ◦ Follow the Gravity
Model: Greater # of people
living in a particular place the greater # of potential customers
Farther people are from a service the less likely they are to use it
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Market Area Analysis: Optimal location within a market Best location in a nonlinear settlement:
◦ ID a possible site for new service ◦Within range, ID where potential customers
live ◦Measure distance from site to every potential
customer ◦Divide potential user # by distance from site ◦Sum all the results of potential used divided
by distances ◦Selected a second location and repeat above
steps ◦Compare the two site results
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Hierarchy of Services and Settlements
Large services do not last in small settlements ◦Threshold needed for the service is too large
Only travel distances if the price is lower somewhere else
Nesting of services and settlement:◦Hexagons overlap each other
Rank-size distribution of settlements: ◦The 2nd largest city is ½ the size of the largest, etc.
Hierarchy graphs as a straight line If not a straight line this rule does not apply and the
largest city is called the primate city A regular hierarchy= wealthy country
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