
The Amazon is a rainforest in South America. It encompasses 1.2 billion acres (7 million km²), with parts located within nine nations: Brazil (with 60% of the rainforest), Colombia, Peru, Venezuela, Ecuador, Bolivia, Guyana, Suriname and French Guiana. This forest represents over half of the planet's remaining rainforests. States or departments in four nations bear the name Amazonas for the Amazon. ==The Amazon Basin== ''See Amazon Basin.'' The forest lies in a basin drained largely by the Amazon River, with 1100 tributaries. This basin was formed in the Palaeozoic period, between 500 and 200 million years ago. ==Biodiversity== The region is home to ~2.5 million insect species, tens of thousands of plants, and some 2000 birds and mammals. The diversity of plant species is the highest on earth with some experts estimating that one square kilometre may contain over 75,000 types of trees and 150,000 species of higher plants. One square kilometre of Amazon rainforest can contain about 90,000 tons of living plants. This constitutes the largest collection of living plants and animal species in the world. One in five of all the birds in the world live in the rainforests of the Amazon. To date, an estimated 438,000 species of plants of economic and social interest have been registered in the region with many more remaining to be discovered or cataloged. (Note: Brazil has one of the most advanced laws to avoid biopiracy, but enforcing it is a problem.) ==Environmentalism== There has been concern among environmentalists for many years, regarding the deforestation of the region, stemming mainly from the fact that more than one fifth of the Amazon Rainforest has already been destroyed; and much more is threatened. Not only are environmentalists concerned about the loss of biodiversity which will result from the forest's destruction, they are also concerned about the release of the carbon which is held within the trees -- this carbon will accelerate global warming. The deforestation of this area in the 1980s was largely considered catastrophic. Yet, in 1996, the Amazon was reported to have shown a 34 per cent increase in deforestation since 1992. A new report by a congressional committee says the Amazon is vanishing at a rate of 52,000 square kilometers (20,000 miles²) a year, over three times the rate for which the last official figures were reported, in 1994. Environmentalists commonly stress the fact that there is not only a biological incentive to protecting the rainforest, but also an economic one. One square kilometer in the Peruvian Amazon has been calculated to have a value of $682,000 if intact forest is sustainably harvested for fruits, latex, and timber; $100,000 if clear-cut for commercial timber (not sustainably harvested); or $14,800 if used as cattle pasture. The Brazilian Air Force has been using EMBRAER EMBRAER R-99 surveillance aircraft, as part of the Sistema de Vigilância da Amazônia program, in an attempt to halt rainforest molestation. At a conference in July 2004, scientists warned that the rainforest will no longer be able to absorb the millions of tons of greenhouse gases annually, as it usually does, because of the increased pace of rainforest destruction. The large-scale cutting of trees begins a cycle in which farmers burn leftover jungle scrub to replenish the soil, which releases huge amounts of carbon dioxide (200 to 300 million tons in 2003) into the atmosphere, that are in turn absorbed by the rainforest. 9,169 square miles of rain forest were cut down in 2003 alone. ==See also== *Illegal logging ==External links== *[http://www.junglephotos.com/conservation/conservation.html Amazon conservation] Rainforests
I thought the total surface of the amazonian forest was around 7 millions of km² (around 2% of emerged surfaces). This article says 1.2 billions of acres. Given that an hectare is 2.47 acres. 1.2 billions acres is 480000000 hectares2, this is 4 800 000 km². Right ? Which is about half my value... But I found numbers that indicated surface of the bresilian forest was about 60% of the amazonian forest, about 4 000 000 km² (with about a 10% destruction in the past 20 years). I think there is a mistake in the article, and that the surface indicated is more the one of the bresilan forest rather than the whole surface. Ideas ? :Amazonia and Amazon Rainforest are not the same thing. Although the rainforest is today the prevalent biome in the ecossistem, there are parts or ''cerrado'' and other forms of vegetatioin. :Amazon rainforest is 7 million km² in size, Brazil is 8,5 million km² in size, and Brazilian amazon rainforest is 49% of Brazilian territory. Source: [http://www.mre.gov.br/cdbrasil/itamaraty/web/port/meioamb/ecossist/amazon/ MRE] [http://pt.wikipedia.org/Usuário:Ligia Lígia] In a book i read it said the complete opposite everyone says and believes in. The book states that trees relise carbon dioxide not oxygen if this statement is true the how come we are still living??? == Number of tributaries == User:216.100.95.40 changed the number of tributaries of the Amazon from 1100 to 2200. I don't know the source for either number, but based on that anon's edit history, I reverted the change. User:Guettarda 17:13, 6 May 2005 (UTC) :And I reverted it again. Well, I thought I reverted it again - I didn't get an edit conflict but apprently you beat me to it. The same anon user had vandalized several articles within the space of a few minutes, then came back and reverted your revert. -- User:Gyrofrog User_talk:Gyrofrog 20:31, 6 May 2005 (UTC)
=Economic value=
One square kilometer in the Peruvian Amazon has been calculated to provide potential earnings of $682,000 per year if intact forest is sustainably harvested for fruits, latex, and timber..... If it was true it seems you would have to build a huge road network in the forest to get the income. In fact, wouldn't work on a huge network of roads be underway now?
:http://www.ecologyandsociety.org/vol6/iss2/art9/main.html this article questions these figures.User:KAM 16:34, 20 May 2005 (UTC)
:Also shouldn't it be vaule not yearly income?
:http://www.isse.ucar.edu/rates/processes.htmlUser:KAM 18:11, 20 May 2005 (UTC)
This page shows results from this study. http://rainforests.mongabay.com/1003.htmUser:KAM 11:28, 21 May 2005 (UTC)
#REDIRECT Amazon Rainforest
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Words begining with Amazon_Rainforest:
Amazon_Rainforest
Amazon_Rainforest
Amazon_rainforest
Amazon Rainforest
The Amazon is a rainforest in South America. It encompasses 1.2 billion acres (7 million km²), with parts located within nine nations: Brazil (with 60% of the rainforest), Colombia, Peru, Venezuela, Ecuador, Bolivia, Guyana, Suriname and French Guiana. This forest represents over half of the planet's remaining rainforests. States or departments in four nations bear the name Amazonas for the Amazon. ==The Amazon Basin== ''See Amazon Basin.'' The forest lies in a basin drained largely by the Amazon River, with 1100 tributaries. This basin was formed in the Palaeozoic period, between 500 and 200 million years ago. ==Biodiversity== The region is home to ~2.5 million insect species, tens of thousands of plants, and some 2000 birds and mammals. The diversity of plant species is the highest on earth with some experts estimating that one square kilometre may contain over 75,000 types of trees and 150,000 species of higher plants. One square kilometre of Amazon rainforest can contain about 90,000 tons of living plants. This constitutes the largest collection of living plants and animal species in the world. One in five of all the birds in the world live in the rainforests of the Amazon. To date, an estimated 438,000 species of plants of economic and social interest have been registered in the region with many more remaining to be discovered or cataloged. (Note: Brazil has one of the most advanced laws to avoid biopiracy, but enforcing it is a problem.) ==Environmentalism== There has been concern among environmentalists for many years, regarding the deforestation of the region, stemming mainly from the fact that more than one fifth of the Amazon Rainforest has already been destroyed; and much more is threatened. Not only are environmentalists concerned about the loss of biodiversity which will result from the forest's destruction, they are also concerned about the release of the carbon which is held within the trees -- this carbon will accelerate global warming. The deforestation of this area in the 1980s was largely considered catastrophic. Yet, in 1996, the Amazon was reported to have shown a 34 per cent increase in deforestation since 1992. A new report by a congressional committee says the Amazon is vanishing at a rate of 52,000 square kilometers (20,000 miles²) a year, over three times the rate for which the last official figures were reported, in 1994. Environmentalists commonly stress the fact that there is not only a biological incentive to protecting the rainforest, but also an economic one. One square kilometer in the Peruvian Amazon has been calculated to have a value of $682,000 if intact forest is sustainably harvested for fruits, latex, and timber; $100,000 if clear-cut for commercial timber (not sustainably harvested); or $14,800 if used as cattle pasture. The Brazilian Air Force has been using EMBRAER EMBRAER R-99 surveillance aircraft, as part of the Sistema de Vigilância da Amazônia program, in an attempt to halt rainforest molestation. At a conference in July 2004, scientists warned that the rainforest will no longer be able to absorb the millions of tons of greenhouse gases annually, as it usually does, because of the increased pace of rainforest destruction. The large-scale cutting of trees begins a cycle in which farmers burn leftover jungle scrub to replenish the soil, which releases huge amounts of carbon dioxide (200 to 300 million tons in 2003) into the atmosphere, that are in turn absorbed by the rainforest. 9,169 square miles of rain forest were cut down in 2003 alone. ==See also== *Illegal logging ==External links== *[http://www.junglephotos.com/conservation/conservation.html Amazon conservation] Rainforests
Amazon Rainforest
I thought the total surface of the amazonian forest was around 7 millions of km² (around 2% of emerged surfaces). This article says 1.2 billions of acres. Given that an hectare is 2.47 acres. 1.2 billions acres is 480000000 hectares2, this is 4 800 000 km². Right ? Which is about half my value... But I found numbers that indicated surface of the bresilian forest was about 60% of the amazonian forest, about 4 000 000 km² (with about a 10% destruction in the past 20 years). I think there is a mistake in the article, and that the surface indicated is more the one of the bresilan forest rather than the whole surface. Ideas ? :Amazonia and Amazon Rainforest are not the same thing. Although the rainforest is today the prevalent biome in the ecossistem, there are parts or ''cerrado'' and other forms of vegetatioin. :Amazon rainforest is 7 million km² in size, Brazil is 8,5 million km² in size, and Brazilian amazon rainforest is 49% of Brazilian territory. Source: [http://www.mre.gov.br/cdbrasil/itamaraty/web/port/meioamb/ecossist/amazon/ MRE] [http://pt.wikipedia.org/Usuário:Ligia Lígia] In a book i read it said the complete opposite everyone says and believes in. The book states that trees relise carbon dioxide not oxygen if this statement is true the how come we are still living??? == Number of tributaries == User:216.100.95.40 changed the number of tributaries of the Amazon from 1100 to 2200. I don't know the source for either number, but based on that anon's edit history, I reverted the change. User:Guettarda 17:13, 6 May 2005 (UTC) :
Amazon rainforest
#REDIRECT Amazon Rainforest
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AB | AC | AD | AE | AF | AG | AH | AI | AJ | AK | AL | AM | AN | AO | AP | AR | AS | AT | AU | AW | AX | AY | AZ |Words begining with Amazon_Rainforest:
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