Economic Geography
Part II
Interaction
Transportation
The City, Services and Central Place Theory
Principles of Spatial Interaction
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Transportation: movement of goods and
people from one place to another
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Communication: movement of information
from one place to another
Medium: voice line, fibre-optic
Spatial interaction = transportation + communication
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Mode: marine, railway, highway
Mode: walking, bicycle, bus, LRT, subway
DC-117 Autoparts, Toronto-Nashville
Trail drive
3
Rail-based meat distribution, reefer
Semitrailer cattleliner
Spatial Interaction
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Nodes: point locations
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But a set of points may comprise a service area
Origins of all people flying out of Lethbridge
County Airport
Destinations
Viewing or listening area for broadcasting
Routes or route segments joining nodes
Flows or volume being moved
Why do things move?
The Bases for Spatial Interaction
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Complementarity
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Complementary resource endowments
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Form utility
Place utility
Transferability
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Ease of transferance and ability to overcome
distance
Distance decay and umland