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The Von Thunen Model AP Human Geography.

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Presentation on theme: "The Von Thunen Model AP Human Geography."— Presentation transcript:

1 The Von Thunen Model AP Human Geography

2 Review: What is a model? Models are examples that help us better understand a major concept or idea. Models are NOT exact and are flexible. Models are NOT perfect. Models might look different in reality than the do in theory.


4 The Model, again.

5 Historical Background
“A Portion of Each Crop is Eaten By the Wheels!”- von Thunen. Germany, 1820’s. Developed by Johann Heinrich von Thunen in the early 1800’s (19th century) Based on the layout of Rostock, Germany Noticed a pattern of 4 rings developed around the central city. Each ring was a different type of agriculture. Created before highways, railroads, factories, etc.

6 The Big Idea! Farmers grow certain crops closer to the market (aka central city) while others are grown farther away. Why? It’s all about the Benjamin$, baby! Decision to grow certain crops in certain places is based on profit.

7 The Formula Profit= Market Price – Production Costs
Production costs include cost of labor, equipment, and TRANSPORTATION! Factor 1: The bulkier the product, the more it costs to transport. Factor 2: The more perishable a product, the closer to the market it has to be. Factor 3: The more land a product needs, the farther from the central city it should be (land closer to city is more expensive) All of these must be considered when deciding what to grow where!

8 Bid-Rent Curve As distance from city center increases, cost of land goes down.

9 The Rings Ring 1: Dairy/ Commercial Gardening Easily perishable goods
Located too far, goods go bad, no profit Ring 2: Forest (building material/ fuel) Not perishable but very heavy! Ring 3: Extensive Crops (grains) Not as heavy as wood, can be stored for longer periods of time. Ring 4: Livestock Needs a lot of land Perishable once slaughtered, but animals can transport themselves! Beyond the rings: Wilderness Too far from city, to expensive to transport anything.

10 One last time.

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