ECOLOGICAL FOOTPRINT.

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Presentation transcript:

ECOLOGICAL FOOTPRINT

What is an Ecological Footprint? If you had to provide everything you use from your own land — how much land area would you need? This land would have to provide you with all of your food, water, energy and everything else that you use. The amount of land you would need to support your lifestyle is called your Ecological Footprint. The ecological footprint is one way of measuring the impact a person has on the environment.

Is the World Big Enough for All of Our BIG feet? The size of a person’s Ecological Footprint will depend on many factors. Do you grow your own food? Do you walk or drive? Do you use renewable or non-renewable energy sources? Everyone has an ecological footprint because we all need to use the earth’s resources to survive. But we must make sure we don’t take more resources than the earth can provide.

Different people in the same country will have different sized ecological footprints. Different countries also have different ecological footprints. Table 1: Global Ecological Footprints Country Ecological Footprint (hectares per person) United States of America 9.57 Canada 8.56 France 5.74 United Kingdom 4.72 El Salvador 1.72 Ghana 1.23 Vietnam 0.76 Ethiopia 0.67 Source: Ecological Footprint of Nations, 2004.

How would factors such as population density, electricity use, and oil consumption affect the size of a person’s ecological footprint? Canada Ghana Vietnam Ethiopia Country Size (km2) 9,985,000 239,000 330,000 1,127,000 Population (million) 32 21 83 73 Population Density (people/ km2) 3.2 87.9 251.5 64.8 Yearly Electricity Use (billion kilowatt hours) 487.3 6.2 32.0 2.0 Oil Consumption (barrels/day) 2,200,000 38,000 185,000 23,000 Highways (km) 1,408,800 46,200 93,300 33,300 GDP* per capita $31,500 $2,300 $2,700 $800 Source: The World Factbook, 2005.

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