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Similaire à 'Meat'ing future food demands (20)
'Meat'ing future food demands
- 4. Population Growth is exponential...
0
1
2
3
4
5
6
Billions
160,000
B.C.
100,000
B.C.
10,000
B.C.
7,000
B.C.
6,000
B.C.
5,000
B.C.
4,000
B.C.
3,000
B.C.
2,000
B.C.
1,000
B.C.
1
A.D.
1,000
A.D.
2,000
A.D.
8
9
7
2,150
A.D.
2011 – 7 Billion
1945 – 2.3 Billion
2050 – 9.1 Billion
1492 – 500 MillionFirst Modern Humans
1776 – 1 Billion
Source: TCP
- 23. Fraction of crop calories that become food
0 0.5 1
36% of calories used for animal feed
- 24. Fraction of crop calories that become food
0 0.5 1
59% of produced calories become food
50% of produced protein become food
- 31. ~10 people per hectare
Possible people fed per hectare
0 2 4 6 8 10
~10 billion people
- 35. Ray et al., 2012
MAIZE - yield trends
Yields increasing
Stagnating
- 36. Ray et al., 2012
RICE - yield trends
Yields increasing
Stagnating