Ecological Footprint Accounting Tool for Sustainability
Balance between: Resource demand: How much of the biospheres regenerative capacity is used by human activities? Resource supply: How much regenerative capacity is available? Biosphere regenerative capacity
Capacity of soil, water, plants, animals, micro-organisms to provide resources without being exhausted. EG soil to grow food without eroding/losing fertility, forests to regrow after felling, fish stocks to build up after harvesting EG surface and groundwater to provide drinking, industry, crop irrigation etc supply Capacity for vegetation to absorb CO2, water to break down pollutants to harmless substances Energy assumed to be the biggest problem
Climate change associated with rising GHGs assumed to be the biggest current threat to biosphere regenerative capacity Energy production and consumption given greatest weighting Carbon footprint focuses solely on GHG emissions [not covered here] Overhang assumption We can use biosphere resources eg fish, timber, soil, water, oil, gas etc faster than: (1) they can regenerate, (2) our waste products can be assimilated [ie not accumulate in toxic/damaging concentrations in air, water, on land]. But only for while.. Eventually either they run out, or we pollute our planet with very bad consequences for our wellbeing Ecological Footprint We measure the mutually exclusive types of areas necessary to produce the resources we consume and absorb the waste we produce. The unit is a global hectare [gha]( m), with the average productivity of the worlds bio-productive surface (ocean and land). Assumes everybody on Earth is entitled to equal share of global resources Footprint components Ecological Footprint Footprint components FossilenergieverbauteAbfall NahrungHolz und Faser Flche Fossil FuelBuilt-up WasteFood Fibres, Firewood absorption W.Pekny, Plattform Footprint Ecological Footprint Non renewable fossil fuels impacts are calculated with the area necessary to absorb the emitted CO2 (forest and oceans). Note each piece of land is assumed to have only one effect. Eg forest land to absorb carbon dioxide does not also provide timber, fish etc Many methodological issues arise Bioproductive segments
Biocapacity 67% Oceans withlow productivity 22% Bioproductive segments 4% Oceans with high productivity Bioproductive segments 13.4 B hectares 18% productive land 11% Deserts, ice Ecological Footprint The very complex ecological inter-relations are summarized to simple parameter: area. The strength of the concept is the obvious and indisputable limit of area on planet Earth. No matter how much money, houses, industries we have, we need biocapacity to survive 13.4B ha bio productive area
Ecological Footprint Footprint The only sustainability metric with an undisputable maximum value: one Earth. 13.4B ha bio productive area Assuming a fair allocation of area, there is about
1.8 gha available per person today (not including any area for biodiversity) The average European citizen requires gha to meet his/her material demands.(US citizen 9.6 gha) For all people to live like Europeans
would require 2.5 planets Human Ecological Footprint, 1950-2050
AbsoluteLimits Sustainable scenario Standard Human Ecological Footprint, + 40% in 2008 Humankind uses an equivalent of 1.4 Earths We no longer get along with the interest Earth provides. We use the capital stocks. Source: Ecological Footprint of Europe WWF 2008 Human Ecological Footprint, 1950-2050
AbsoluteLimits Sustainable scenario Standard Human Ecological Footprint, By 2050, the ecological debts would equal about 34 years of planetary production Source: GFN Daten update 2008 Ireland tenth A D National Footprints Figures in gha/capita China
Built land Fishing Forest Pasture Arable land Carbon Footprint A Switzerland D Austria Slovenia China Germany Hungary World available WWF Living Planet Report 2008 National Footprints figures in gha/capita China 1330 Nigeria 130
Indonesia 223 India 1100 Pakistan 158 Bangladesh 142 WWF Living Planet Report 2008 Top Down Bottom Up Product Footprints National Footprint
Aggregated Footprint per capita Component Footprint Top Down Regional Footprints City Footprints Individual Footprint Open NFA again, show two places of information Why do we use top down for populations? COMPLETENESS need to sum to the global total for all people, bottom up not possible in practice Why do we use bottom up for products? Nothing to scale from! Advantage: resolution finer than top down, but will not sum to global totals Will present both to you briefly, since both may contribute to type of Footprinting Bioregional is interested in Bottom Up Energy Footprint Transport Footprint Carbon Footprint Summary 1 In relation to region/Earths capacity to provide us with energy, food, living space, assimilate wastes, can measure whether we are using resources faster than are being renewed gha unit: big success, many organisations, countries, companies have adopted it as key indicator for measuring sustainability Raising general awareness: many people believe they understand what the EF measures Summary 2 Socio-economics not included Toxic substances not included
One aggregated figure: not much use for prioritising policies Awareness/behaviour divide What EF can do for us Measure resource demand and supply.
Show us where we are using resources too quickly. Highlight which land type is used most intensively. Provides a basis for comparing overall resource demand amongst settlements, regions and countries. Provides a personal account of the resource demand of an individuals lifestyle. What EF cannot do for us
Show us why we are using resources too quickly. Help with finding policies to reduce our consumption [other than the general policy: we must use less]. Take account of other impacts on the environment eg mercury pollution, ozone depletion [ie it UNDERESTIMATES our overall impact on the Earth]. Tell us about the impact of resource consumption on human health and wellbeing. Take this quiz to estimate your Ecological Footprint www
Take this quiz to estimate your Ecological FootprintOR Search words: calculate your ecological footprint