In economic and environmental fields, decoupling refers to an economy that would be able to grow without corresponding increases in environmental pressure. [1] In many economies, increasing production (GDP) raises pressure on the environment. An economy that would be able to sustain economic growth while reducing the amount of resources such as water or fossil fuels used and delink environmental deterioration at the same time would be said to be decoupled. [2] Environmental pressure is often measured using emissions of pollutants, and decoupling is often measured by the emission intensity of economic output. [3]
Studies have found that absolute decoupling was rare and that only a few industrialised countries had weak decoupling of GDP from "consumption-based" CO2 production. [4] No evidence was found of national or international economy-wide decoupling in a study in 2020. [5] In cases where evidence of decoupling exists, one proposed explanation is the transition to a service economy. The environmental Kuznets curve is a proposed model for eco-economic decoupling. [6]
In 2002, the OECD defined the term as follows: "the term 'decoupling' refers to breaking the link between "environmental bads" and "economic goods." It explains this as having rates of increasing wealth greater than the rates of increasing impacts. [7]
Tim Jackson, author of Prosperity Without Growth , stresses the importance of differentiating between relative and absolute decoupling:
Jackson points out that an economy can correctly claim that it has relatively decoupled its economy in terms of energy inputs per unit of GDP. However, in this situation, total environmental impacts would still be increasing, albeit at a slower pace of growth than in GDP. [8]
Jackson uses this distinction to caution against technology-optimists who use the term decoupling as an "escape route from the dilemma of growth". [8] He points out that "there is quite a lot of evidence to support the existence of [relative decoupling]" in global economies, however "evidence for [absolute decoupling] is harder to find". [8]
Similarly, ecological economist and steady-state theorist Herman Daly stated in 1991: [9]
It is true that "In 1969 a dollar's worth of GNP was produced with one-half the materials used to produce a dollar's worth of GNP in 1900, in constant dollars." Nevertheless, over the same period total materials by consumption increased by 400 percent.
Relative decoupling | Absolute decoupling | |
---|---|---|
Description | Decline in the resource intensity per unit of economic output | Resource use decline in absolute terms while economic output rise |
Example | Increased carbon efficiency (but lower than economic growth) | Increased carbon efficiency higher than economic growth |
Link with I = PAT | Carbon intensity decline (but ≤ population + income growths) | Carbon intensity decline > (population growth + income growth) |
Evidence for carbon emissions | Yes: 34% decrease between 1965 and 2015 (CO2/$GDP) | No: 300% increase between 1965 and 2015 (absolute CO2 emissions) |
Evidence for resource extraction | No: resource use increases more than GDP (1990-2015) | No: resource use increases overall (1990-2015) |
Between 1990 and 2015, the carbon intensity per $GDP declined of 0.6 percent per year (relative decoupling), but the population grew of 1.3 percent per year and the income per capita also grew of 1.3 percent per year. [10] That is to say, the carbon emissions grew of 1.3 + 1.3 − 0.6 = 2 percent per year, leading to a 62% increase in 25 years (the data reflect no absolute decoupling). [10] According to Tim Jackson: [10]
There is no simple formula that leads from the efficiency of the market to the meeting of ecological targets. Simplistic assumptions that capitalism's propensity for efficiency will allow us to stabilise the climate are nothing short of delusional. [...] The analysis in this chapter suggests that it is entirely fanciful to suppose that 'deep' emission and resource cuts can be achieved without confronting the structure of market economies.
On economic growth and environmental degradation, Donella Meadows wrote: [11]
Growth has costs as well as benefits, and we typically don't count the costs – among which are poverty and hunger, environmental destruction, and so on – the whole list of problems that we are trying to solve with growth! What is needed is much slower growth, very different kinds of growth, and in some cases no growth or negative growth. The world's leaders are correctly fixated on economic growth as the answer to virtually all problems, but they're pushing it with all their might in the wrong direction.
Resource decoupling refers to reducing the rate of resource use per unit of economic activity. The "dematerialization" is based on using less material, energy, water and land resources for the same economic input. Impact decoupling required increasing economic output while reducing negative environmental impacts. These impacts arise from the extraction of resources. [12]
Historically there has been a close correlation between economic growth and environmental degradation: as communities grow in size and prosperity, so the environment declines. This trend is clearly demonstrated on graphs of human population numbers, economic growth, and environmental indicators. [13] There is a concern that, unless resource use is checked, modern global civilization will follow the path of ancient civilizations that collapsed through overexploitation of their resource base. [14] [15] While conventional economics is concerned largely with economic growth and the efficient allocation of resources, ecological economics has the explicit goal of sustainable scale (rather than continual growth), fair distribution and efficient allocation, in that order. [16] [17] The World Business Council for Sustainable Development states that "business cannot succeed in societies that fail." [18]
In economic and environmental fields, the term decoupling is becoming increasingly used in the context of economic production and environmental quality. When used in this way, it refers to the ability of an economy to grow without incurring corresponding increases in environmental pressure. Ecological economics includes the study of societal metabolism, the throughput of resources that enter and exit the economic system in relation to environmental quality. [17] [19] An economy that can sustain GDP growth without harming the environment is said to be decoupled. Exactly how, if, or to what extent this can be achieved is a subject of much debate.
In 2011 the International Resource Panel, hosted by the United Nations Environment Programme (UNEP), warned that by 2050 the human race could be devouring 140 billion tons of minerals, ores, fossil fuels and biomass per year—three times its current rate of consumption—unless nations can make serious attempts at decoupling. [20] The report noted that citizens of developed countries consume an average of 16 tons of those four key resources per capita per annum (ranging up to 40 or more tons per person in some developed countries). By comparison, the average person in India today consumes four tons per year.
Sustainability studies analyse ways to reduce resource intensity (the amount of resource (e.g. water, energy, or materials) needed for the production, consumption and disposal of a unit of good or service) whether this be achieved from improved economic management, product design, or new technology. [21]
There are conflicting views on whether improvements in technological efficiency and innovation will enable a complete decoupling of economic growth from environmental degradation. On the one hand, it has been claimed repeatedly by efficiency experts that resource use intensity (i.e., energy and materials use per unit GDP) could in principle be reduced by at least four or five-fold, thereby allowing for continued economic growth without increasing resource depletion and associated pollution. [22] [23] On the other hand, an extensive historical analysis of technological efficiency improvements has conclusively shown that improvements in the efficiency of the use of energy and materials were almost always outpaced by economic growth, in large part because of the rebound effect (conservation) or Jevons Paradox resulting in a net increase in resource use and associated pollution. [24] [25] Furthermore, there are inherent thermodynamic (i.e., second law of thermodynamics) and practical limits to all efficiency improvements. For example, there are certain minimum unavoidable material requirements for growing food, and there are limits to making automobiles, houses, furniture, and other products lighter and thinner without the risk of losing their necessary functions. [26] Since it is both theoretically and practically impossible to increase resource use efficiencies indefinitely, it is equally impossible to have continued and infinite economic growth without a concomitant increase in resource depletion and environmental pollution, i.e., economic growth and resource depletion can be decoupled to some degree over the short run but not the long run. Consequently, long-term sustainability requires the transition to a steady state economy in which total GDP remains more or less constant, as has been advocated for decades by Herman Daly and others in the ecological economics community.
The OECD 2019 Report "Environment at a Glance Indicators – Climate change" points out that the issue of diminishing GHG emissions while maintaining GDP growth is a major challenge for the forthcoming years. [27]
Policies have been proposed for creating the conditions that enable widespread investments in resource productivity. According to Mark Patton a global leading expert, Such potential policies include the raising of resource prices in line with increases in energy or resource productivity, a shift in revenue-raising onto resource prices through resource taxation at source or in relation to product imports, with recycling of revenues back to the economy, ... [28]
Several technologies have been described in the Decoupling 2 report, including:
In 2014, the same International Resource Panel published a second report, "Decoupling 2", [29] which "highlights existing technological possibilities and opportunities for both developing and developed countries to accelerate decoupling and reap the environmental and economic benefits of increased resource productivity." The lead coordinating author of this report was Ernst Ulrich von Weizsäcker.
In 2016, the International Resource Panel published a report indicating that "global material productivity has declined since about the year 2000 and the global economy now needs more materials per unit of GDP than it did at the turn of the century" as a result of shifts in production from high-income to middle-income countries. [30] That is to say, the growth of material flows has been stronger than the growth of gross domestic product. [30] This is the opposite of decoupling, a situation that some people call overcoupling.
There is no empirical evidence supporting the existence of an eco-economic decoupling near the scale needed to avoid environmental degradation, and it is unlikely to happen in the future. Environmental pressures can only be reduced by rethinking green growth policies, where a sufficiency approach complements greater efficiency. [31] [32]
In 2020, an analysis by Gaya Herrington, then Director of Sustainability Services of KPMG US, [33] was published in Yale University's Journal of Industrial Ecology . [34] The study assessed whether, given key data known in 2020 about factors important for the "Limits to Growth" report, the original report's conclusions are supported. In particular, the 2020 study examined updated quantitative information about ten factors, namely population, fertility rates, mortality rates, industrial output, food production, services, non-renewable resources, persistent pollution, human welfare, and ecological footprint, and concluded that the "Limits to Growth" prediction is essentially correct in that continued economic growth is unsustainable. [34]
The study found that current empirical data is most closely consistent with 2 scenarios: Business as Usual(BAU) and Comprehensive technology(CT). In both scenarios, growth will peak around 2030 but in the BAU scenario societal collapse will follow around 2040, while in the CT scenario the adverse impacts will be softened. The less likely is the Stabilized World(SW) model describing a world going toward sustainability, in which economic growth is stopped but welfare is not hurt. The author concluded her study saying: "Although SW tracks least closely, a deliberate trajectory change brought about by society turning towards another goal than growth is still possible. That window of opportunity is closing fast." [34] [35] [36]
According to scientist and author Vaclav Smil, "Without a biosphere in a good shape, there is no life on the planet. It’s very simple. That’s all you need to know. The economists will tell you we can decouple growth from material consumption, but that is total nonsense. The options are quite clear from the historical evidence. If you don’t manage decline, then you succumb to it and you are gone. The best hope is that you find some way to manage it." [37]
In 2020, a meta-analysis of 180 scientific studies notes that there is "No evidence of the kind of decoupling needed for ecological sustainability" and that "in the absence of robust evidence, the goal of decoupling rests partly on faith". [5]
Economic growth can be defined as the increase or improvement in the inflation-adjusted market value of the goods and services produced by an economy in a financial year. Statisticians conventionally measure such growth as the percent rate of increase in the real and nominal gross domestic product (GDP).
I = (PAT) is the mathematical notation of a formula put forward to describe the impact of human activity on the environment.
Uneconomic growth is economic growth that reflects or creates a decline in the quality of life. The concept is used in human development theory, welfare theory, and ecological economics. It is usually attributed to ecological economist Herman Daly, though other theorists may also be credited for the incipient idea, According to Daly, "uneconomic growth occurs when increases in production come at an expense in resources and well-being that is worth more than the items made." The cost, or decline in well-being, associated with extended economic growth is argued to arise as a result of "the social and environmental sacrifices made necessary by that growing encroachment on the eco-system."
Ecological economics, bioeconomics, ecolonomy, eco-economics, or ecol-econ is both a transdisciplinary and an interdisciplinary field of academic research addressing the interdependence and coevolution of human economies and natural ecosystems, both intertemporally and spatially. By treating the economy as a subsystem of Earth's larger ecosystem, and by emphasizing the preservation of natural capital, the field of ecological economics is differentiated from environmental economics, which is the mainstream economic analysis of the environment. One survey of German economists found that ecological and environmental economics are different schools of economic thought, with ecological economists emphasizing strong sustainability and rejecting the proposition that physical (human-made) capital can substitute for natural capital.
Ecological modernization is a school of thought that argues that both the state and the market can work together to protect the environment. It has gained increasing attention among scholars and policymakers in the last several decades internationally. It is an analytical approach as well as a policy strategy and environmental discourse.
The Wuppertal Institute for Climate, Environment and Energy is a German research institution for sustainability research, focusing on impacts and practical application. It explores and develops models, strategies, and instruments to support sustainable development at local, national, and international levels. Research at the Wuppertal Institute focuses on ecology and its relation to economy and society. Special emphasis is put on analyzing and supporting technological and social innovations that decouple the prosperity of economic growth from the use of natural resources. The organization's activities focus on developing transformation processes aimed at shaping a climate-friendly and resource-efficient world.
Eco-efficiency refers to the delivery of goods and services to meet human needs and improve quality of life while progressively reducing their environmental impacts of goods and resource intensity during their life-cycle.
A green economy is an economy that aims at reducing environmental risks and ecological scarcities, and that aims for sustainable development without degrading the environment. It is closely related with ecological economics, but has a more politically applied focus. The 2011 UNEP Green Economy Report argues "that to be green, an economy must not only be efficient, but also fair. Fairness implies recognizing global and country level equity dimensions, particularly in assuring a Just Transition to an economy that is low-carbon, resource efficient, and socially inclusive."
The Kuznets curve expresses a hypothesis advanced by economist Simon Kuznets in the 1950s and 1960s. According to this hypothesis, as an economy develops, market forces first increase and then decrease economic inequality. Although it has been criticized, the Kuznets curve has appeared to be consistent with experience.
A steady-state economy is an economy made up of a constant stock of physical wealth (capital) and a constant population size. In effect, such an economy does not grow in the course of time. The term usually refers to the national economy of a particular country, but it is also applicable to the economic system of a city, a region, or the entire world. Early in the history of economic thought, classical economist Adam Smith of the 18th century developed the concept of a stationary state of an economy: Smith believed that any national economy in the world would sooner or later settle in a final state of stationarity.
In energy conservation and energy economics, the rebound effect is the reduction in expected gains from new technologies that increase the efficiency of resource use, because of behavioral or other systemic responses. These responses diminish the beneficial effects of the new technology or other measures taken. A definition of the rebound effect is provided by Thiesen et al. (2008) as, “the rebound effect deals with the fact that improvements in efficiency often lead to cost reductions that provide the possibility to buy more of the improved product or other products or services.” A classic example from this perspective is a driver who substitutes a vehicle with a fuel-efficient version, only to reap the benefits of its lower operating expenses to commute longer and more frequently."
Degrowth is an academic and social movement critical of the concept of growth in gross domestic product as a measure of human and economic development. The idea of Degrowth is based on claims and research from a multitude of disciplines such as economic anthropology, ecological economics, environmental sciences, and development studies. It argues that modern capitalism's unitary focus on growth causes widespread ecological damage and is unnecessary for the further increase of human living standards. Degrowth theory has been met with both academic acclaim and considerable criticism.
Sustainability is a social goal for people to co-exist on Earth over a long time. Definitions of this term are disputed and have varied with literature, context, and time. Sustainability usually has three dimensions : environmental, economic, and social. The popular three intersecting circles, or Venn diagram, representing sustainability first appeared in a 1987 article by the economist Edward Barbier. Many definitions emphasize the environmental dimension. This can include addressing key environmental problems, including climate change and biodiversity loss. The idea of sustainability can guide decisions at the global, national, organizational, and individual levels. A related concept is that of sustainable development, and the terms are often used to mean the same thing. UNESCO distinguishes the two like this: "Sustainability is often thought of as a long-term goal, while sustainable development refers to the many processes and pathways to achieve it."
Resource intensity is a measure of the resources needed for the production, processing and disposal of a unit of good or service, or for the completion of a process or activity; it is therefore a measure of the efficiency of resource use. It is often expressed as the quantity of resource embodied in unit cost e.g. litres of water per $1 spent on product. In national economic and sustainability accounting it can be calculated as units of resource expended per unit of GDP. When applied to a single person it is expressed as the resource use of that person per unit of consumption. Relatively high resource intensities indicate a high price or environmental cost of converting resource into GDP; low resource intensity indicates a lower price or environmental cost of converting resource into GDP.
Resource productivity is the quantity of good or service (outcome) that is obtained through the expenditure of unit resource. This can be expressed in monetary terms as the monetary yield per unit resource.
Green growth is a concept in economic theory and policymaking used to describe paths of economic growth that are environmentally sustainable. It is based on the understanding that as long as economic growth remains a predominant goal, a decoupling of economic growth from resource use and adverse environmental impacts is required. As such, green growth is closely related to the concepts of green economy and low-carbon or sustainable development. A main driver for green growth is the transition towards sustainable energy systems. Advocates of green growth policies argue that well-implemented green policies can create opportunities for employment in sectors such as renewable energy, green agriculture, or sustainable forestry.
The report Decoupling Natural Resource Use and Environmental Impacts from Economic Growth is one of a series of reports researched and published by the International Resource Panel (IRP) of the United Nations Environment Programme. The IRP provides independent scientific assessments and expert advice on a variety of areas, including:
Resource efficiency is the maximising of the supply of money, materials, staff, and other assets that can be drawn on by a person or organization in order to function effectively, with minimum wasted (natural) resource expenses. It means using the Earth's limited resources in a sustainable manner while minimising environmental impact.
Dematerialization is a term in economics and the social sciences that describes the process of making more goods with less material. The term itself possesses multi-accentuality, which allows it to be diversely explained by different fields of social science, such as Mainstream economics, which puts focus on the aspects of technological evolution and market demand shifts, and Ecological economics, which emphasizes the effect of dematerialization on the natural environment.
A circular economy is an alternative way countries manage their resources, in which usage of products in the traditional linear make, use, and dispose method is not implemented. Instead, resources are used for their maximum utility throughout their life cycle and regenerated in a cyclical pattern minimizing waste. They strive to create economic development through environmental and resource protection. The ideas of a circular economy were officially adopted by China in 2002, when the 16th National Congress of the Chinese Communist Party legislated it as a national endeavor though the various sustainability initiatives which were implemented in the previous decades starting in 1973. China adopted the circular economy due to the environmental damage and resource depletion that was occurring from going through its industrialization process. China is currently a world leader in the production of resources, where it produces 46% of the world's aluminum, 50% of steel and 60% of cement, while it has consumed more raw materials than all the countries a part of the Organisation for Economic Co-operation and Development (OECD) combined. In 2014, China created 3.2 billion tonnes of industrial solid waste, where 2 billion tonnes were recovered using recycling, incineration, reusing and composting. By 2025, China is anticipated to produce up to one quarter of the world's municipal solid waste.