Ag Hearths
• Where were plants and animals first domesticated?
Seed & vegetative Hearths
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Animal Domestication
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Subsistence Agriculture
Where & why there?
What are the characteristics of
subsistence agriculture?
As we move through this power point think
about:
• The characteristics of subsistence ag
• Where and why there?
Climate Type?
How about the climate here?
Pastoral Nomadism
• Nomadic herding is a
subsistence practice type
of grazing. People raise
animals for their own food
and move them from
place to place to areas of
available pasture.
• Nomadic herding still
exists in the world today
in the areas of Northwest
Asia, the Middle East,
North Africa and the
Arctic Tundra.
Characteristics of nomadic herding
are:
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Subsistence
Travel
Sparse forage
Covers a large area of the
earth’s surface
Few products enter world trade
Poor quality livestock
Inadequate diets for livestock
and people
Extensive - takes a large land
area to produce enough food
for people to survive
Found in extreme climates (dry
or cold)
Generally in LDCs (Less
Developed Countries)
Shifting Cultivation
Where and why there?
• rainforest soils are not very
fertile
• heavy rainfall leaches out the
important nutrients from the
soil
• Thus natives of rainforests
move their area of cultivation
every 3-4 years
• Takes place in tropical climates
in South America, Africa and
South East Asia
Intensive Subsistence Agriculture
Intensive Subsistence Agriculture
• Intensive = lots of labor per acre of output
• Intensive Subsistence Ag = small landholdings
Farmers must work intensively to subsist on their land
Where: Primarily in S. and SE Asia + Southern and eastern China
What: rice and wheat in Asia, corn and potatoes in the Americas
What explains the patterns here?
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Subsistence Ag Summary