Central Place Theory Walter Christaller Assumptions Results.
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Transcript of central place theory.pptx.ppt
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CHAT
REPORTING :
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Christaller's Central Place Theory
- an attempt to explain the spatial arrangement, size, andnumber of settlements.
-published in 1933
-german geographer-found it possible to model the pattern of settlement locations into geometric shapes-
Walter Christaller
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Assumptions:
•an isotropic (all flat) surface
•an evenly distributed population
•evenly distributed resources
•similar purchasing power of all consumers and consumers will patronize nearest market
•transportation costs equal in all directions and proportional to distance
•no excess profits (Perfect competition)
•
All areas have :
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• Simple basic services (e.g. grocery stores)
• specialized services (e.g. universities)
• Settlements which provide low order services
• Settlements that provide high order services
• the area under influence of the Central Place
Low order
High order
Low order settlements
High order settlements
Sphere of influence
Some terms :
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• the minimum population that is required to bring about the provision of certain good or services
• the average maximum distance people will travel to purchase goods and services
Details of the theory :
threshold :
range of good or services :
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• As transport is equally easy in all direction, each central place will have a circular market area as shown in C in the following diagram:
Arrangement of the Central places/ settlements:
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The three principles in the arrangement of the central places:
• The transportation principle :
• The administrative principle :
• The marketing principle :
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• The different orders of settlements arrange themselves in a hierarchy.
• Generally speaking lower is the order, larger is the number of settlements and higher the order, greater is the area served.
The Marketing Principle :
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• the distribution of central places is most favourable when as many important places as possible lie on one traffic route between two important towns, the route being established as straightly and as cheap as possible.
• the central places would thus be lined up on straight traffic routes which fan out from the central point
The Transportation Principle :
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• from a political or administrative viewpoint centers it was unrealistic for centers to be ‘shared’.
• Christaller suggested that an arrangemnt whereby lower order centers were entirely with the hexagon of the higher order center would obviate such problems.
The Administrative Principle :
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• The theory does a reasonably good job of describing the spatial pattern of urbanization.
• Central place theory does a good job of describing the location of trade and service activity.
Advantages of Central Place Theory:
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