# Value of Earth

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{{Short description|Economical estimate of the net worth of the planet}}
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{{Green economics sidebar}}
The '''value of Earth''', i.e. the [net worth](/source/net_worth) of our planet, is a debated concept both in terms of the definition of value, as well as the scope of "[Earth](/source/Earth)". Since most of the planet's substance is not available as a [resource](/source/natural_resource), "earth" has been equated with the sum of all [ecosystem services](/source/ecosystem_services) as evaluated in [ecosystem valuation](/source/ecosystem_valuation) or [full-cost accounting](/source/full-cost_accounting).<ref name="Pimm1997">{{cite journal | last=Pimm | first=Stuart L. | title=The value of everything | journal=Nature | volume=387 | issue=6630 | year=1997 | issn=0028-0836 | doi=10.1038/387231a0 | pages=231–232|url=https://www.researchgate.net/publication/230693467|quote=Economists and ecologists have joined forces to estimate the annual value of the services that Earth's ecosystems provide. Most services lie outside the market and are hard to calculate, yet minimum estimates equal or exceed global gross national product.| bibcode=1997Natur.387Q.231P | doi-access=free}}</ref>

The  price  on  the  services  that  the world's  ecosystems  provide to humans has been estimated in 1997 to be $33 trillion per annum, with a [confidence interval](/source/confidence_interval) of from $16 trillion to $54 trillion.{{vague|reason=unspecified confidence level|date=December 2020}} Compared with the combined [gross national product](/source/gross_national_product) (GNP) of all the  countries at about the same time ($18 trillion), ecosystems would appear to be providing 1.8 times as much economic value as people are creating.<ref name="Costanza1997">{{cite journal | last1=Costanza | first1=Robert | last2=d'Arge | first2=Ralph | last3=de Groot | first3=Rudolf | last4=Farber | first4=Stephen | last5=Grasso | first5=Monica | last6=Hannon | first6=Bruce | last7=Limburg | first7=Karin | last8=Naeem | first8=Shahid | last9=O'Neill | first9=Robert V. | last10=Paruelo | first10=Jose | last11=Raskin | first11=Robert G. | last12=Sutton | first12=Paul | last13=van den Belt | first13=Marjan | title=The value of the world's ecosystem services and natural capital | journal=Nature | volume=387 | issue=6630 | year=1997 | issn=0028-0836 | doi=10.1038/387253a0 | pages=253–260|quote=We have estimated the current economic value of 12  ecosystem services for 16 [biome](/source/biome)s, based on published studies and a few original calculations. For the entire [biosphere](/source/biosphere), the value (most of which is outside the market) is estimated to be in the range of US$16-54  (1012) per year, with an average of US$33 trillion per year. Because of the nature of the uncertainties, this must be considered a minimum estimate. Global gross national product total is around US$18 trillion per year.| bibcode=1997Natur.387..253C | s2cid=672256 }}</ref> The result details have been questioned, in particular the GNP, which is believed to be closer to $28 trillion (which makes ecosystem services only 1.2 times as precious), while the basic approach was readily acknowledged.<ref name="Pearce1998">{{cite journal | last=Pearce | first=David | title=Auditing the Earth:The Value of the World's Ecosystem Services and Natural Capital | journal=Environment: Science and Policy for Sustainable Development | volume=40 | issue=2 | year=1998 | issn=0013-9157 | doi=10.1080/00139159809605092 | pages=23–28|url=http://data.naturalcapitalproject.org/natcap/ES281_What%20is%20Nature%20Worth/ES281_What%20is%20Nature%20Worth/Readings/ES%20Controversy/bisc102-goldfarb.pdf}}</ref> The [World Bank](/source/World_Bank) gives the total gross domestic product (GDP) in 1997 as $31 trillion, which would about equal the biosystem value.<ref name="Data1922">{{cite web | title=GDP (current US$) | website=Data | url=https://data.worldbank.org/indicator/NY.GDP.MKTP.CD | access-date=2018-06-06}}</ref> Criticisms were addressed in a later publication, which gave an estimate of $125 trillion/yr for ecosystem services in 2011, which would make them twice as valuable as the GDP, with a yearly loss of 4.3–20.2 trillion/yr.<ref name="Costanza de Groot Sutton van der Ploeg 2014 pp. 152–158">{{cite journal | last1=Costanza | first1=Robert | last2=de Groot | first2=Rudolf | last3=Sutton | first3=Paul | last4=van der Ploeg | first4=Sander | last5=Anderson | first5=Sharolyn J. | last6=Kubiszewski | first6=Ida | last7=Farber | first7=Stephen | last8=Turner | first8=R. Kerry | title=Changes in the global value of ecosystem services | journal=Global Environmental Change | volume=26 | year=2014 | issn=0959-3780 | doi=10.1016/j.gloenvcha.2014.04.002 | pages=152–158| s2cid=15215236 |quote=• Global loss of ecosystem services due to land use change is $US 4.3–20.2 trillion/yr. • Ecoservices contribute more than twice as much to human well-being as global GDP. • Estimates in monetary units are useful to show the relative magnitude of ecoservices. • Valuation of ecosystem services is not the same as commodification or privatization. • Ecosystem services are best considered public goods requiring new institutions.}}</ref>

The BBC has published a website that lists various types of resources on various scales together with their current estimated values from different sources, among them [BBC Earth](/source/BBC_Earth), and [Tony Juniper](/source/Tony_Juniper) in collaboration with The [United Nations Environment Programme World Conservation Monitoring Centre](/source/United_Nations_Environment_Programme_World_Conservation_Monitoring_Centre) (UNEP-WCMC).<ref name=BBC>{{cite web|url=http://www.bbc.com/earth/story/cost-the-earth-sources|title=Cost the Earth sources / How we derived financial values for the natural world|quote=in a world that often focuses on money, it can be a useful tool to help remind us that nature does have a value, and what might be lost if aspects of it disappear.|access-date=2018-06-05}}</ref>

==See also==
*[Gross world product](/source/Gross_world_product)
*[Willingness to pay](/source/Willingness_to_pay)
*[Earth Economics](/source/Earth_Economics)
*[Ecological values of mangroves](/source/Ecological_values_of_mangroves)
*[Natural capital](/source/Natural_capital)
*[Total economic value](/source/Total_economic_value)

==References==
{{reflist}}

Category:Ecosystems
Category:Economic indicators
Category:Valuation (finance)

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Adapted from the Wikipedia article [Value of Earth](https://en.wikipedia.org/wiki/Value_of_Earth) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Value_of_Earth?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.
