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The Ecological Footprint. Ann MacGarry Education Officer Centre for Alternative Technology. What is it? What does it tell us? What is its relevance for farming/growing in Britain? Where’s the information?. The ecological footprint is a way of expressing our impact on the planet. - PowerPoint PPT Presentation
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The Ecological Footprint
Ann MacGarryEducation Officer
Centre for Alternative Technology
What is it?
What does it tell us?
What is its relevance for farming/growing in Britain?
Where’s the information?
The ecological footprint is a way of expressing our impact on the
planet.
It shows us the amount of land that is used to provide us with everything that we consume
(energy, food, homes, travelling around, the things we buy) and
also to cope with the wastes that we produce.
These are the Eco-footprint categories of land use -
the size is not intended to represent proportions
It measures it in area of land (and sea) used
bioproductive land arable land used for growing crops (food but also including things like cotton) pasture land for grazing animals forest land used to produce timber, paper and other products
bioproductive sea space products are fish, other seafoods and seaweed
built and degraded land roads, buildings (houses, factories, schools, offices, shops), car parks, airports
energy land the area of woodland needed to absorb the CO2 produced in using the energy
biodiversity land land needed to ensure the protection of the non-human species
It is expressed in global hectares (gha) or planets
Global hectares are more or less than a real hectare
(100mx100m) depending on the productivity
So, how do they measure energy?
One 2003 global hectare can absorb the CO2 released by burning approximately 1 450 litres of petrol per year.Living Planet Report 2006
We only have 1 planet ...
But in Britain we behave as if we had
3
Why do we need the Ecological Footprint?
What does it tell us that we wont get elsewhere?
Our challenge –
Can we provide for the needs of everyone on the planet without increasing
Climate Change or destroying the natural
environment?
and go on providing for the needs of future generations
It gives us some idea of what the limits are
It can help us to prioritise
- a measure of what is possible, of what we could provide for the population of this planet
and of the impact of our
possible solutions
What does it add to what a carbon calculator does?
It includes carbon but because it adds the spatial element it
shows the limits of some solutions
What it does and doesn’t do Attempts to incorporate all aspects of our physical impacts on the planet, but can only do that if those impacts can be related to land use (some pollution can’t be)
Does not give a measure for depletion of finite resources
Does not give a measure of aesthetics or social impacts
Cannot easily produce a quantifiable figure for absolutely every aspect of human life
It is evolving as an analytical tool
It’s authors have an underlying moral philosophy about fairness
and they err on the side of caution in their calculations,
so they will be underestimates,
rather than overestimates
It measures all our consumption
- subtracts exports and adds imports
- so produces different figures from those that relate to UK
energy production and consumption
WWF and SEI have recently produced footprint reports for every local
authority in Britain
http://www.wwflearning.org.uk/ecological-budget/
and then to
http://www.sei.se/reap/download_login.php?region=l
The earth has a surface area of about 51 billion hectare.
Only 15 billion hectares is land.
It has been calculated that there are about 11.3 billion hectares of bio-productive area.
(a considerable amount of the Earth’s surface is rock, desert or covered with ice)
The World population is at least 6.4 billion
So, our individual fair share of the 11.3 billion would be
1.8 hectares eachand it’s getting smaller all the time…...
2001 data, LPR 2004 p34
So, how are we doing?
This what we are consuming But, how is it possible to consume more
than 1 planet’s worth of resources?
Humanity’s Ecological Footprint
Living Planet Report 2006
This is part of the answerAnother part is Climate Change
Living Planet Report 2006
WWF Living Planet Report
2006
Living Planet Report 2006
We are using 2.2gha per person
Living Planet Report 2006
How is it changing over time? Is poverty reducing?
EF of different areas -
Britain 5.45
South East 6.9York 6.7
London 6.63 Scotland 5.35
Wales 5.25
What direction should we be taking in Land use?
Food and drink 24.5 % Services 4.5 % Energy 17 % Capital invest.14 % Travel 15 % Government 8 % Holidays 2 % Consumables 12 % (this is the stuff we buy, but not food)
www.walesfootprint.org
In Wales meat is 9.5% of our total footprint, 3% is drinks while fruit, vegetables, bread and cereals
are only 4%.
Taking Stock 2004
methane
York report
York report
For UK food consumption as a whole:•Over 31% by weight is imported from overseas, of which over 99% arrives by ship.
• The UK agricultural imports chart ... shows year to year fluctuations but some very cleartrends: imports of ‘agricultural raw materials’ in particular have doubled each decade from 1970
Taking Stock
A large proportion of the food footprint – 44% for eating in and 26% for eating out – is due to the consumption of meat products..
0.88 gha/cap for eating at home
0.41 gha/cap for eating out.
the actual amounts eaten -
578 kg/cap eaten at home
61 kg/cap eaten out
the service of providing food in a restaurant involves various service activities and is less efficient than food preparation at home.
30% of the footprint for food eaten out comes from soft drinks (10%) and alcoholic drinks (20%).
Taking Stock
Over 1 million tonnes per year of food and drink goes to waste directly, of which 88% goes to landfilldisposal:
700,000 tonnes of household food is wasted, at an estimated rate of 14% of the total.
386,000 tonnes of catering food is wasted, at an estimated rate of 43% of the total.
Taking Stock
Issues
What’s in season?
Wastage
Processing
Content of diet
Food miles
Organic production
So,
Energy used on farms is not so much
Energy associated with processing is more significant
Direct land use varies enormously - highest for animal products
Food miles is an issue when it is air transport or many road miles (and
impact can be increased by refrigeration etc.)
A win-win situation? Harvard food pyramid
What is the impact of our large food footprint on the rest of the world?
It is linked to -
low wages and exploitation (inc health risks from pesticide use)
climate change
environmental degradation
human rights violations
violence
Wales 2004 p 75
Global hectares per gigawatt hour of energy
0 50 100 150
coal
fuels
natural gas
wood extensive
wood intensive
hydropower
solar electricity
solar heating
windpower
gha/GWh
Wales 2004 p 75
It is also extremely effective as an
educational tool
General awareness raising about the fact that our lives have an impact on the planet
It is also extremely effective as an educational tool
Awareness raising about the degree to which our own consumption in Britain exceeds the capacity of the planet (the 3 planets)
and that 80% of the global population consume so little
A tool for analysing our impact to see what the relative significance is of different parts of our lifestyle – breaking it down into components.
Food33%
Things we buy24%
Energy21%
Roads, buildings
etc13%
Transport9%
A tool to work out how we could change our footprint – for ourselves individually, a school, area or for the region or country – creating visions of a sustainable future
Venturer camp 2002 vision for a reduced footprint
913
2124
33
100
3.697.8 7 6.24
16.5
41.23
0
20
40
60
80
100
120
Transport Roads,buildings etc
Energy Things webuy
Food Total
before
after
It offers opportunities for role play, cartoon, metaphor, creative thinking
It offers opportunities for role play, cartoon, metaphor, creative thinking
and spins off other learning
Sources of info – Calculate your own footprint at - www.myfootprint.org
SEI (Stockholm environment Institute) reports -http://www.york.ac.uk/inst/sei/IS/sustain.html and look athttp://www.regionalsustainability.org/
the Living Planet Report 2006 – http://www.panda.org
The long, detailed and interesting footprint report of the South East of England at –www.takingstock.org
Redefining Progresswww.RedefiningProgress.org/ecologicalfootprint
Best Foot Forwardwww.bestfootforward.com
Sharing Nature’s Interest – book
CAT Where’s the Impact pack – www.cat.org.uk/edresources