What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the...

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Transcript of What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the...

Page 1: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

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Page 2: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

What is an ecological footprint?

Page 3: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

Ecological Footprints are…

a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured in hectares and represents the land area needed to provide resources and absorb waste and greenhouse gases produced by an individual.

Page 4: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

What are the numbers? World Average – 2.2 hectares

Biggest Footprint – United States – 9.6 hectares

Smallest Footprint – Bangladesh – 0.5 hectares

Average Canadian Footprint – 8.6 hectares

Canada has the 3rd highest footprint in the world!

Why is Canada’s average footprint so big?

Page 5: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

What do we “need”? We require …..

• 0.2 hectares of land for water (to drink & provide seafood) hectares of land for home and roads and factories that make the

material things we grave

• 1.6 hectares of land for farmland to grow the food we eat

• 0.3 hectares of land for grazing land for meat and dairy

• 1.4 hectares of land for timber wood and paper products

• 4.7 hectares of land and needed to absorb the greenhouse gases produced by driving around town, through the running of air conditioners and the import of exotic goods and foods

= 8.6 hectares

Page 6: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

Ecological Impact of Nations The map on the following slide shows various

countries and regions of the world proportionate to their production and consumption of commercially traded fuels.

All figures are in million metric tons of oil equivalent.

Page 7: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

Ecological Impact of Nations

Page 8: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

How Much Land do we Have?

Page 9: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

Defining Environment & Sustainability

Stewardship refers to the responsibility we all have to the environment and resources that has been left to us by our ancestors. We are all stewards to our planet.

Sustainability refers to the ability to develop in order to meet the needs of the present without negatively affecting the ability of future generations to meet their needs

Page 10: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

Defining Environment & Sustainability

If we are not all following our role as stewards in the global village, then we will not have a sustainable environment for our future children.

“We do not inherit the earth from our grandparents, we borrow it from our children.”

We must all do our part to keep our consumption of resources to a minimum, and to keep the environment around us clean.

Are you doing your part?

Page 11: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

How a Greenhouse Works

The sun’s rays are

strong enough to

pierce through the

glass of the

greenhouse.

The rays become weaker

once they bounce off

something, so they are not all

able to pierce back through

the glass… the temperature

inside rises.

Page 12: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

Sun’s rays

Some rays are

strong enough

to escape back

into space

Some rays are

held in by the

atmosphere

Atmosphere

The Greenhouse Effect - Now

Page 13: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

The Greenhouse Effect - Now

Sun’s rays

More rays are

held in,

warming up

the Earth

A thickened

atmosphere,

caused by pollution

Page 14: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

Climate Change is a major shift in the overall temperature levels of the Earth (up or down).

Global Warming is the rising of the average temperature of Earth.

The Greenhouse Effect is the trapping of heat by the Earth’s thickened atmosphere. This is caused by pollution.

Defining Environment & Sustainability

Page 15: What is an ecological footprint?...Ecological Footprints are… a measure of human impact on the Earth. The footprint equals the Earth’s cost to sustain one person. It’s measured

Who Will Speak for the Trees?