Tabel 1-1 kemampuan sistem pertanian untuk menghasilkan makanan dan dukungan
penduduk
|
|
|
Cereal
|
World
|
|
|
Agriculture
|
Cultural Stage
|
Yield
|
Population
|
Hectares
Per
|
|
System
|
Or time
|
(t/ha)
|
(millions)
|
Person
|
|
Hunting and
Gathering
Shifting angriculture
Medieval
rotation
Livestock
farming
Fertilizers/pesticides
|
Paloelithic
Neolithic (10,000 years ago)
500-1450
A.D
Late 1700s
Twentieth
century
|
1
1
2
4
|
35
900
1800
4200
|
40.0
1.5
0.7
0.3
|
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