GEOG 217 Lecture Notes - Lecture 7: Pastoralism, Social Cost, Offshoring
18 May 2018
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Lecture 7 – January 29th
Expansion and Intensification of Land Use
How to Meet Growing Food Demand?
• Eating meet requires more land
• I = P x A x T
o I – total impact
o P – population
o A – affluence
o T – technology
o Total area of land = population x food quantity/population x area/food
quantity
• Population likely to grow
• How do we meet the growing demand?
o Decrease in meat consumption (unlikely worldwide)
▪ Need land to grow the animals
o Increase in cultivated area
o Intensification of production
▪ Decrease the amount of land needed to create food
• How much more land will we need to put into production to feed the world in 2030?
(in hectares)
o (Look at slides for table or the global population and cereal production)
Agricultural Expansion
• Growing human needs were historically met through expansion of agriculture into
natural environments
• Agricultural frontiers: where agriculture expands over other land uses
o Have abundant, mostly unoccupied land in non-agricultural areas
o Relocation of labour and capital from agricultural areas to non-agricultural
areas
o Contagious diffusion
o Non-agricultural areas can bed forest, wetlands, etc.
• Which of these statements is/are true of Von Thunen’s location rent theory?
o A. The profitability of agriculture decreases with distance from a central
market
o B. Transportation costs determine the location of different land uses
o C. The transition between land uses happens where their profitability is
equal, which corresponds to the meeting of their rent curves
o D. New roads cause the expansion of crops further away from the central
market
o They are all correct
• Von Thunen and agricultural frontiers
o Rent vs distance
o Assumption: forest rent = 0
o Frontier (area), frontier (limit)
• Smallholder frontiers in the Amazon
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