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Ecological Footprint

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Ecological Footprint ukuran performansi sustainability Rethingking Wealth in a Resource-Constrained World (1) . Access to ecosystem services will become an ever more critical factor for economic success and resilience in 21st century. Why? New era of peak energy and climate A Global change supply- demand crunch of Food essential shortage, biodiversity resources loss, depleted fisheries, soil erosion and freshwater stress . Humanity is already in “overshoot”, using more resources than Earth can renew. Rethingking Wealth in a Resource-Constrained World (2) . Futher degradation of the Earth’s capacity to generate resources, continuing accumulation of greenhouse gases and other waste, make likely shortage, or even collapse, of critical ecosystems. Climate debate: Who act first may be at a competitive disadvantage vs the opposite . In an age of growing resource scarcity, the wealth of nations increasingly will be defined in terms of who has ecological assets, and who does not. Rethingking Wealth in a Resource-Constrained World (3) . Without significant change, countries that depend extensively upon ecological resources from abroad will become particularly vulnerable to supply chain disruptions, and to rising costs for greenhouse gas emissions and waste disposal. Countries and states with sufficient ecological reserves to balance their own consumption or even export resources will be at a competitive advantage, ex: BedZed in UK and Masdar in UAE (can operate on small ecological footprint) The Role of Metrics . Clear metrics can help change ideological debates into discussion based on empirical facts. The Ecological Footprint was developed over 15 years ago to help provide just such a metric. Footprint Basics - Overview . Human activities consume resources and produce waste, and as our populations grow and global consumption increases, it is essential that we measure nature’s capacity to meet these demands. The Ecological Footprint has emerged as one of the world’s leading measures of human demand on nature. Simply put, Ecological Footprint Accounting addresses whether the planet is large enough to keep up the demands of humanity. Footprint Basics – Overview (2) . The Footprint represents two sides of a balance sheet. On the asset side, biocapacity represents the planet’s biologically productive land areas including our forests, pastures, cropland and fisheries. Biocapacity can then be compared with humanity’s demand on nature: our Ecological Footprint. The Ecological Footprint represents the productive area required to provide the renewable resources humanity is using and to absorb its waste. Ecological Footprint and Biocapacity . The Footprint represents two sides of a balance sheet. On the asset side, biocapacity and humanity’s demand on nature: our ecological footprint. More precisely, it measures the amount of biologically productive land and water area required to produce all the resources an individual, population, or activity consumes, and to absorb the waste they generate, given prevailing technology and resource management practices. This area can then be compared with biological capacity (biocapacity), the amount of productive area that is available to generate these resources and to absorb the waste how to assess our impact? one measure: Fundamental Assumptions: (1) 1. The majority of the resources people or activities consume and the wastes they generate can be tracked. 2. Most of these resource and waste flows can be measured in terms of the biologically productive area necessary to maintain them. 3. By scaling each area in proportion to its bioproductivity, different types of areas can be converted into the common unit of average bioproductivity, the global hectare. This unit is used to express both Footprint and biocapacity. Fundamental Assumptions: (2) 4. Because a global hectare of demand represents a particular use that excludes any other use tracked by the Footprint, and all global hectares in any single year represent the same amount of bioproductivity, they can be summed. Together, they represent the aggregate demand or Ecological Footprint. In the same way, each hectare of productive area can be scaled according to its bioproductivity and then added up to calculate biocapacity. 5. As both are expressed in global hectares, human demand (as measured by Ecological Footprint accounts) can be directly compared to global, regional, national, or local biocapacity. Fundamental Assumptions: (3) 6. Area demanded can exceed the area available. If demand on a particular ecosystem exceeds that ecosystem’s regenerative capacity, the ecological assets are being diminished. For example, people can temporarily demand resources from forests or fisheries faster than they can be renewed, but the consequences are smaller stocks in that ecosystem. When the human demand exceeds available biocapacity, this is referred to as overshoot. World Footprint Do we fit on the planet? Source: www.footprintnetwork.org Earth Overshoot Day (1) the day when humanity begins living beyond its ecological means. Beyond that day, we move into the ecological equivalent of deficit spending, utilizing resources at a rate faster than what the planet can regenerate in a calendar year. Turning resources into waste faster than waste can be turned back into resources puts us in global ecological overshoot, depleting the very resources on which human life and biodiversity depend. Source: http://www.footprintnetwork.org/ Earth Overshoot Day (2) The Approximate date our resource consumption for a given year exceeds the planet’s ability to replenish. August 20 is Earth Overshoot Day 2013, marking the date when humanity exhausted nature’s budget for the year. In 1993, Earth Overshoot Day fell on October 21. In 2003, Overshoot Day was on September 22. Given current trends in consumption, one thing is clear: Earth Overshoot Day arrives a few days earlier each year. When is the date? 23 Sep 2008 25 Sep 2009 21 Aug 2010 27 Sep 2011 22 Aug 2012 20 Aug 2013 19 Aug 2014 (Source: http://www.footprintnetwork.org/) How many China does it take to support China How about Indonesia? Other countries which do not “overshoot”, yet! How many planets does it takes to support your lifestyle? Calculate your own footprint: http://www.wwf.org.au/our_work/people_and_the_environmen t/human_footprint/footprint_calculator/ http://www.footprintnetwork.org/en/index.php/GFN/page/calc ulators/ .
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