Questions: Agricultural Geography and Land Use Models

Question 1

A new high-speed rail line connects a previously remote farming region to a major city, dramatically reducing transportation costs. According to Von Thünen's model, what spatial change would you predict?

• A. Farmers near the city would shift to less intensive farming to avoid competition from the newly connected region
• B. The concentric land-use zones would expand outward, making intensive activities viable at greater distances from the city
• C. No change — land use is determined by climate and soil quality, not market access
• D. The city would lose its role as a market center as farmers gain direct access to global markets

Answer: (B)

Von Thünen's model is driven entirely by transportation cost logic. Lower transportation costs mean that activities which were previously only profitable close to the city — because they couldn't absorb high transport costs — can now operate profitably at greater distances. The entire ring structure expands outward. Options A and C reveal the most common misconception: the model explicitly holds climate and soil constant and focuses on economic distance, not physical geography.

Question 2

Which of the following most accurately characterizes the Green Revolution's impact on agricultural regions of the Global South?

• A. It uniformly improved food security and rural livelihoods for all farmers who adopted new varieties
• B. It increased national food production dramatically but with uneven distributional effects and long-term ecological costs
• C. It primarily benefited subsistence farmers by reducing their dependence on external markets
• D. It had significant short-term benefits but no measurable long-term environmental consequences

Answer: (B)

The Green Revolution was a genuine triumph in aggregate food production — India and Mexico achieved food self-sufficiency within a generation. But the gains were unevenly distributed: farmers with capital, credit, and irrigated land captured most benefits, while those without were often squeezed out. Ecological costs including aquifer depletion, soil degradation, and pesticide resistance built up over decades. Options A and C reflect the oversimplified positive view that ignores distributional and ecological realities.

Question 3

According to Von Thünen's model, dairy farming appears near cities primarily because cows require temperate climates that are more common near urban centers.

• T. True
• F. False

Answer: False

Von Thünen's model is entirely about economic logic — transportation cost and perishability — not climate. Dairy farming locates near cities because milk is perishable (cannot survive long transportation) and valuable per unit area, making the high land cost near the city worthwhile. The model explicitly assumes a uniform plain with constant climate throughout, precisely to isolate the effect of distance from any environmental explanation.

Question 4

Subsistence farming systems can sometimes achieve higher yields per hectare than commercial monoculture farming.

• T. True
• F. False

Answer: True

Traditional subsistence systems often use labor-intensive techniques like intercropping, polyculture, and agroforestry that are highly productive per unit of land, even if less productive per unit of labor. They may be better adapted to local ecology and more resilient to variability. The assumption that 'modern = more productive' per hectare is not always valid — commercial farming optimizes for labor and capital productivity, not necessarily land productivity.

Question 5

Explain the core economic logic of Von Thünen's model: why does land use intensity vary with distance from the market?

Model answer: Transportation costs increase with distance from the market, so farmers further from the city receive less net revenue per unit sold. Activities that are perishable, highly valuable per hectare, or labor-intensive must locate close to the market where they can absorb high land costs but minimize transportation costs. Activities that are durable, lower-value, or land-extensive can tolerate higher transportation costs and therefore locate further out. The result is concentric land-use rings organized entirely by economic distance, not by soil or climate.

The model's power is that it shows how market forces alone — without central planning — organize agricultural space. It also reveals that 'agricultural geography' is partly just 'transportation geography.' When transportation technology changes (canals, railroads, refrigeration), the entire ring structure shifts — a prediction that has been broadly validated historically.