exatto

society

land
the Ecological Footprint equation
EFC = EFP + ( EFI - EFE )
C : Consumption ( gha )
P : Production ( gha )
I : Imports ( gha )
E : Exports ( gha )
Ecological Footprint of Production
EFP = Σ Ti * wAi * gAi
EFP : Ecological Footprint of Production ( gha )
i : Product i
T : Tons( ton )
wA : world-average Area per Ton ( wha / ton )
gA : global Area per world-average Area ( gha / wha )
water
population
Optimal Population
55,000,000
estimated from Ecological Footprint
Optimal City Population
10,000 - 100,000
Population Density for Efficient Public Servcing
1,100 / km2 -
accounting