Carrying Capacity, human appropriation and the Ecological Footprint. Readings. Vitousek 1986, Postel et al, 1996, rprogress.org optional – Daly et al 1992. Carrying Capacity. Upper limit to the ultimate size - carrying capacity (CC): Logistic or density dependent growth Growth determined by:
Readings. Vitousek 1986, Postel et al, 1996, rprogress.org optional – Daly et al 1992
Growth determined by:
Pt = Pt-1 + r* Pt-1 * (CC - Pt-1)/CC
Can we measure cc?
Does it make sense to measure CC?
=> 3% of all NPP
=>19.9% of total NPP.
=>40% of terrestrial NPP, 25% of global NPP
=> We appropriate 26% of all EP
=> aa = C/P = (kg/capita)/(kg/ha) = ha/capita
Then of course you can multiply the total EF per capita by total population to get EF per nation.
Step 1. Consumption Items
- NS - 8.1 ha/capita
- AB - 7.9 ha/capita
Global Average: 2.3 hectares/capita
Fossil fuel consumption 160GJ/cap/year
Productivity of energy land 100 GJ/HA