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Amazon clear-cutting in Peru. (Photo by R. Butler)
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A WORLD Imperiled: FORCES BEHIND FOREST LOSS
As the first seven sections of this site have described, tropical rainforests are incredibly rich ecosystems that play a fundamental role in the basic functioning of the planet. Rainforests are home to probably 50 percent of the world's species, making them an extensive library of biological and genetic resources. In addition, rainforests help maintain the climate by regulating atmospheric gases and stabilizing rainfall, protect against desertification, and provide numerous other ecological functions.
However, these precious systems are among the most threatened on the planet. Although the precise area is debated, each day at least 80,000 acres (32,300 ha) of forest disappear from Earth. At least another 80,000 acres (32,300 ha) of forest are degraded. Along with them, the planet loses as many as several hundred species to extinction, the vast majority of which have never been documented by science. As these forests fall, more carbon is added to the atmosphere, climactic conditions are further altered, and more topsoil is lost to erosion.
Despite increased awareness of the importance of these forests, deforestation rates have not slowed. Analysis of figures from the Food and Agriculture Organization of the United Nations (FAO) shows that tropical deforestation rates increased 8.5 percent from 2000-2005 when compared with the 1990s, while loss of primary forests may have expanded by 25 percent over the same period. Nigeria and Vietnam's rate of primary forest loss has doubled since the 1990s, while Peru's rate has tripled.
| Rate of change
in total deforestation rate
2000-2005 period vs 1990-2000 period |
| Country | | Rate of change
(%) |
| Malaysia | | 85.7 |
| Cambodia | | 74.3 |
| Burundi | | 47.6 |
| Togo | | 41.6 |
| Nigeria | | 31.1 |
| Sri Lanka | | 25.4 |
| Benin | | 24.1 |
| Brazil | | 21.2 |
| Uganda | | 21.0 |
| Indonesia | | 18.6 |
| Total
(62 tropical countries) | | 8.5 |
Overall, FAO estimates that 10.4 million hectares of tropical forest were permanently destroyed each year in the period from 2000 to 2005, an increase since the 1990-2000 period, when around 10.16 million hectares of forest were lost. Among primary forests, annual deforestation rose to 6.26 million hectares from 5.41 million hectares in the same period. On a broader scale, FAO data shows that primary forests are being replaced by less biodiverse plantations and secondary forests. Due to a significant increase in plantation forests, forest cover has generally been expanding in North America, Europe, and China while diminishing in the tropics. Industrial logging, conversion for agriculture (commercial and subsistence), and forest fires—often purposely set by people—are responsible for the bulk of global deforestation today.
But enough about the extent and some of the effects of deforestation. What is responsible for this loss? This is the question this section addresses.
Deforestation and Degradation
Before expanding further on forest loss it is critical to first explain what is considered "forest" and what is meant by deforestation and forest degradation.
The Food and Agriculture Organization of the United Nations (FAO), the leading source for information on the status of the world's forests, defines forests as land with a tree canopy cover of more than 10 percent and an area of more than half a hectare. FAO says that "forest" includes natural forests and forest plantations but specifically excludes stands of trees established primarily for agricultural production (i.e. fruit tree and oil palm plantations) and trees planted in agroforestry systems.
Other organizations use different standards for defining forests. For example, the United Nations Environment Programme (UNEP) uses 40 percent cover as the threshold for "closed forests" and 10-40 percent cover for "open forests," while the Tropical Ecosystem Environment Observations by Satellite (TREES) project—funded in the 1990s by the European Commission—classifies areas with more than 70 percent canopy cover as "dense forests" and those with 40-70 percent cover as "fragmented forest."
To reduce confusion, this site will generally follow FAO's convention, even though it has been criticized for its generous definition of what it considers forest.
FAO defines deforestation as "the conversion of forest to another land use or the long-term reduction of the tree canopy cover below the minimum 10 percent threshold." Depletion of forest to tree crown cover greater than 10 percent (say from 90 percent to 12 percent) is considered forest degradation. Logging most often falls under the category of forest degradation and thus is not included in FAO deforestation statistics. For this reason, forest degradation rates are considerably higher than deforestation rates.
Digging a little deeper, FAO says that "deforestation includes areas of forest converted to agriculture, pasture, water reservoirs and urban areas," but the term "specifically excludes areas where the trees have been removed as a result of harvesting or logging and where the forest is expected to regenerate naturally or with the aid of silvicultural measures."
Deforestation vs. Degradation
|
Causes of Deforestation
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Causes of Degradation
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[print version | spanish | french | portuguese
| chinese | japanese]
Review questions:
- What is the difference between deforestation and forest degradation?
- What are some examples of activities that cause deforestation?
- What are some causes of forest degradation?
Continued: Natural forces behind deforestation
Recent deforestation news articles
A Tasmanian tragedy? : How the forestry industry has torn an island apart
(07/02/2009) This is by no means a new battle: in fact, Tasmanian industrial foresters and environmentalists have been fighting over the issue of clearcutting the island’s forests for decades. The battle—some would probably prefer 'war'—is over nothing less than the future of Tasmania. Some Tasmanians see the rich forests that surround them in terms of income, dollars and cents; they see money literally growing on trees, or more appropriately growing on monoculture plantations and government owned native forests. They see the wilderness of Tasmania as an exploitative resource.
Brazil's development bank to require beef-tracking system to avoid illegal Amazon deforestation
(07/01/2009) Responding to allegations that major Brazilian cattle producers are responsible for illegal forest clearing in the Amazon, Brazil's development bank BNDES will soon require processors to trace the origin of beef back to the ranch where it was produced in order to qualify for loans, reports Brazil's Agencia Estado. The traceability program aims to ensure that cattle products do not come from illegally deforested land.
NASA images show huge drop in Amazon fires in 2008
(06/30/2009) New NASA research shows a sharp decline in the amount of smoke over the Amazon during the 2008 burning season, coinciding with a drop in deforestation reported last week by Carlos Minc, Brazil's Environment Minister. Analyzing the aerosol concentrations over the Amazon each September from the past four burning seasons using the Ozone Monitoring Instrument on NASA's Aura satellite, atmospheric scientist Omar Torres of Hampton University and several colleagues found a dramatic decline in airborne particular matter in 2008, indicating reduced incidence of fire in the region. Fire in the Amazon is primarily used by humans for land-clearing to establish cattle pasture, which now accounts for the vast majority of land-use change in the world's largest rainforest.
U.S. forgives $30M in debt to protect rainforests in Sumatra, Indonesia
(06/30/2009) The United States will forgive nearly $30 million in debt owed by Indonesia in exchange for increased protection of endangered rainforests on the island of Sumatra, reports the Wall Street Journal. The deal is the largest debt-for-nature swap under the U.S. Tropical Forest Conservation Act — unanimously reauthorized this May by the Senate Foreign Relations Committee last week — and its first such agreement with Indonesia, which has the second highest annual loss of forest cover after Brazil. Under the terms of the pact the government of Indonesia will put $30 million into a trust over the next eight years. The trust will issue annual grants for forest conservation and restoration work in Sumatra, an island that lost nearly half of its forest cover between 1985 and 2007 as a result of logging, conversion for plantations, and forest fires.
A New Idea to Save Tropical Forests Takes Flight
(06/29/2009) Every year, tens of millions of acres of tropical forests are destroyed. This is the most destabilizing human land-use phenomenon on Earth. Tropical forests store more aboveground carbon than any other biome. They harbor more species than all other ecosystems combined. Tropical forests modulate global water, air, and nutrient cycles. They influence planetary energy flows and global weather patterns. Tropical forests provide livelihoods for many of the world’s poorest and marginalized people. Drugs for cancer, malaria, glaucoma, and leukemia are derived from rainforest compounds. Despite all these immense values, tropical forests are vanishing faster than any other natural system. No other threat to human welfare has been so clearly documented and simultaneously left unchecked. Since the 1992 Rio Earth Summit (when more than 100 heads of State gathered to pledge a green future) 500 million acres of tropical forests have been cut or burned. For decades, tropical deforestation has been the No. 1 cause of species extinctions and the No. 2 cause of human greenhouse gas emissions, after the burning of fossil fuels. For decades, a few conservation heroes tried their best to plug holes in the dikes, but by and large the most diverse forests on Earth were in serious decline.
Tesco responds to allegations of causing Amazon deforestation
(06/29/2009) Tesco, one of Europe’s largest retailers, has sent a response to the British newspaper The Guardian in light of the paper's coverage of recent allegations that the chain store sells beef and leather products that caused deforestation of the Amazon.
Saving one of the last tropical dry forests, an interview with Edwina von Gal
(06/29/2009) Often we hear about endangered species—animals or plants on the edge of extinction—however we rarely hear about endangered environments—entire ecosystems that may disappear from Earth due to humankind’s growing footprint. Tropical dry forests are just such an ecosystem: with only 2 percent of the world’s tropical dry forest remaining it is one of the world’s most endangered ecosystems. A newly established organization, the Azuero Earth Project, is working not only to preserve some of the world’s last tropical dry forest on the Azuero peninsula in Panama, but also to begin restoration projects hoping to aid both the forest’s viability and the local people. Edwina von Gal, a landscape designer, is one of the founders of the Azuero Earth Project, as well as president of the organization.
Brazilian cattle giant declares moratorium on Amazon deforestation
(06/25/2009) Marfrig, the world's fourth largest beef trader, will no longer buy cattle raised in newly deforested areas within the Brazilian Amazon, reports Greenpeace. The announcement is a direct response to Greenpeace's Slaughtering the Amazon report, which linked illegal Amazon forest clearing to the cattle producers that supply raw materials to some of the world's most prominent consumer products companies. Marfrig was one several cattle firms named in the investigative report.
Brazilian miner Vale signs $500M palm oil deal in the Amazon
(06/25/2009) Vale, the world's largest miner of iron ore, has signed a $500 million joint venture with Biopalma da Amazonia to produce 160,000 metric tons of palm oil-based biodiesel per year, reports Reuters. Vale says the deal will save $150 million in fuel costs starting in 2014, with palm oil biodiesel replacing up to 20 percent of diesel consumption in the company's northern operations. The biodiesel will be produced from oil palm plantations in the Amazon state of Pará. The move is likely to stir up criticism from environmentalists that fear palm oil production could soon become a major driver of deforestation in the region.
Massive deforestation in the past decreased rainfall in Asia
(06/25/2009) Between 1700 and 1850 forest cover in India and China plummeted, falling from 40-50 percent of land area to 5-10 percent. Forests were cut for agricultural use across Southeast Asia to feed a growing population, but the changes from forests to crops had unforeseen consequences. A new study published in the Proceedings of the National Academy of Sciences links this deforestation across Southeast Asia with changes in the Asian Monsoon, including significantly decreased rainfall.
First comprehensive study of insect endangerment: ten percent of dragonflies threatened
(06/23/2009) A lot of time, effort, and funds have been spent on programs evaluating the threat of extinction to species around the world. Yet insects have not benefited from these programs, which have largely focused on more 'charismatic' species such as mammals, birds, amphibians, and reptiles. This gap is clearly shown by the fact that 42 percent of vertebrates have been assessed by the International Union for the Conservation of Nature (IUCN), and only 0.3 percent of invertebrates.
Mixed signals from the crown? Queen knights logging tycoon while Prince fights deforestation
(06/22/2009) Tiong Hiew King, founder and chairman of the Rimbunan Hijau Group, a Malaysian logging firm notorious for large-scale destruction of rainforests, has been knighted by Queen Elizabeth, a move which environmentalists say directly conflicts with her son's campaign — the Prince’s Rainforests Project — to save global rainforests. Prince Charles established the project in 2007 and has become increasingly vocal in his calls to conserve forests.
Amazon deforestation in 2009 declines to lowest on record
(06/22/2009) Annual deforestation in the Brazilian Amazon fell below 10,000 square kilometers for the first time since record-keeping began, reported Brazil's Environment Minister Carlos Minc. Yesterday Minc said preliminary data from the country's satellite-based deforestation detection system (DETER) showed that Amazon forest loss between August 2008 and July 2009 would be below 10,000 square kilometers, the lowest level in more than 20 years. Falling commodity prices and government action to crack down on illegal clearing are credited for the decline in deforestation rates.
Fate of world's rainforests likely to be determined in next 2 years
(06/19/2009) The fate of millions of hectares of tropical forests will probably be sealed this year and next year, reports a new set of policy papers detailing an emerging climate change mitigation mechanism known as Reducing Emissions from Deforestation and Degradation (REDD). REDD has been proposed by the U.N. and other entities as a form of carbon finance under which industrialized nations would pay tropical countries for conserving their forest cover.
Commission on Climate and Tropical Forests forms to advise Congress, Obama on forest conservation
(06/18/2009) Leaders in business, government, advocacy, conservation, global development, science and national security have formed a commission to "provide bipartisan recommendations to Congress and the President about how to reduce tropical deforestation through U.S. climate change policies," according to a statement released by the newly established group, named the Commission on Climate and Tropical Forests.
Amazon could lose 60% of forest without triggering catastrophic die-off, claims new study
(06/16/2009) Brazil's setting aside of more than 500,000 square miles (1.25 million square kilometers) of rainforest in protected areas over the past decade may effectively buffer the Amazon from the effects of climate change, preventing Earth's largest rainforest from tipping towards arid savanna in the face of ongoing deforestation and rising temperatures, argues a new paper published in Proceedings of the National Academy of Sciences.
Attacking the demand side of deforestation
(06/16/2009) A new UK government-sponsored initiative seeks to address the demand side of deforestation by identifying how an organization's activities and supply chains contribute to forest destruction. The initiative, called the Forest Footprint Disclosure Project (FFD Project), will ask companies to "disclose how their operations and supply chains are impacting forests worldwide, and what is being done to manage those impacts responsibly." The disclosure information will be reported on an annual basis, enabling investors to identify possible risks related to a company’s "forest footprint." Disclosure will also provide consumers with information to make better informed decisions about the products they purchase.
Forest fires burn in Sumatra
(06/15/2009) Fires set by developers in Sumatra are causing a choking haze to spread across the island and over to Malaysia, reducing visibility and raising health concerns, reports Reuters.
Caribou and reindeer population plunges 60 percent in three decades
(06/14/2009) The first ever comprehensive survey of caribou worldwide (known as reindeer in Europe) has found that the species has suffered a staggering decline. Researchers from the University of Alberta discovered that the caribou population has fallen 60 percent in half as many years. The study published in Global Change Biology points to global warming and industrial development as the reasons behind the decline.
World Bank revokes loan to Brazilian cattle giant accused of Amazon deforestation
(06/13/2009) The Work Bank's private lending arm has withdrawn a $90 million loan to Brazilian cattle giant Bertin, following Greenpeace's release of a report linking Bertin to illegal deforestation of the Amazon rainforest, report environmental groups, Friends of the Earth-Brazil and Greenpeace. The loan, granted by the International Finance Corporation (IFC) in March 2007, was to expand Bertin's meat-processing in the Brazilian Amazon. At the time, the IFC promoted the loan as a way to promote environmentally responsible beef production in the Amazon, although environmental groups — including Friends of the Earth-Brazil and Greenpeace — criticized the move.
Wal-Mart bans beef illegally produced in the Amazon rainforest
(06/12/2009) Brazil's three largest supermarket chains, Wal-Mart, Carrefour and Pão de Açúcar, will suspend contracts with suppliers found to be involved in Amazon deforestation, reports O Globo. The decision, announced at a meeting of the Brazilian Association of Supermarkets (Abras) this week, comes less than two weeks after Greenpeace's exposé of the Amazon cattle industry. The report, titled Slaughtering the Amazon, linked some of the world's most prominent brands — including Nike, Toyota, Carrefour, Wal-Mart, and Johnson & Johnson, among dozens of others — to destruction of the Amazon rainforest for cattle pasture.
Amazon deforestation doesn't make communities richer, better educated, or healthier
(06/11/2009) Deforestation generates short-term benefits but fails to increase affluence and quality of life in the long-run, reports a new study based an analysis of forest clearing in 286 municipalities across the Brazilian Amazon. The research, published in Friday's issue of the journal Science, casts doubt on the argument that deforestation is a critical step towards development and suggests that mechanisms to compensate communities for keeping forests standing may be a better approach to improving human welfare, while simultaneously sustaining biodiversity and ecosystem services, in rainforest areas.
NASA photos reveal destruction of 99% of rainforest park in Rwanda
(06/09/2009) Satellite images released by NASA show nearly complete destruction of Rwanda's Gishwati Forest between 1986 and 2001. Deforestation of the forest reserve is largely the result of subsistence harvesting and cultivation by refugees in the aftermath of the country's 1994 genocide. Overall only 600 hectares of Gishwati's original 100,000 hectares of forest remain, a loss of 99.4 percent.
Climate pact must halt deforestation and industrial logging of old-growth forests, exclude carbon credits for forest conservation, say activists
(06/09/2009) A global framework on climate change must immediately halt deforestation and industrial logging of the world's old-growth forests, while protecting the rights of forest communities and indigenous groups, said a broad coalition of activist groups in a consensus statement issued today at U.N. climate talks in Bonn Germany. The statement said the successor treaty to the Kyoto Protocol should not include mechanisms that allow industrialized countries to "offset" their emissions by purchasing carbon credits from reducing deforestation in developing countries, a position that puts the coalition at odds with larger environmental groups who say a market-based approach with tradable credits is the only way to generate enough money fund forest protection on a global scale.
International community calls for action against gangs’ illegal logging in Madagascar
(06/08/2009) Six nations and three conservation organizations have issued a statement calling for action against illegal logging in Madagascar’s protected areas.
Brazil to sanction illegal colonization in 230,000 sq mi of Amazon rainforest
(06/08/2009) Brazil moved a step closer to passing a controversial law that would allow landowners who illegally deforested land in the Amazon to get legal title to these holdings. Environmentalists say HB 458 — which now only needs the signature of President Lula, an avid supporter — will legitimize years of illegal colonization and may promote new deforestation.
Forest degradation is huge source of CO2 emissions
(06/05/2009) Selective logging, understory fires, fuelwood harvesting, and other forms of forest degradation are a substantial source of greenhouse has emissions, reports a policy brief issued by The Nature Conservancy (TNC) at U.N. climate talks in Bonn, Germany.
REDD can compete financially with palm oil in Indonesia peatlands while protecting endangered species
(06/04/2009) A new paper by Oscar Venter, a PhD student at the University of Queensland, and colleagues finds that forest conservation via REDD — a proposed mechanism for compensating developing countries for Reducing Emissions from Deforestation and Degradation — could be economically competitive with oil palm production, a dominant driver of deforestation in Indonesia. The study, based on overlaying maps of proposed oil palm development with maps showing carbon-density and wildlife distribution in Kalimantan (Indonesian Borneo), estimates that REDD is financially competitive, and potentially able to fund forest conservation, with oil palm at carbon prices of $10-$33 per ton of carbon dioxide equivalent (tCO2e). In areas with low agricultural suitability and high forest carbon, notably peatlands, Venter and colleagues find that a carbon price of $2 per tCO2e would be sufficient to beat out returns from oil palm.
Tropical East Asian forests under great threat
(06/02/2009) Tropical East Asia's rapid population growth and dramatic economic expansion over the past half century have taken a heavy toll on its natural resources. More than two-thirds of the region's original forest cover has been cleared or converted for agriculture and plantations, while its flora and fauna have suffered dearly from a burgeoning trade in wildlife products—several charismatic species have gone extinct as a direct consequence of human exploitation. Nevertheless tropical East Asia remains a top global priority for conservation, supporting up to a quarter of the world's terrestrial species.
Reducing emissions from deforestation in developing countries
(06/02/2009) Global forest covers around 30 per cent of the Earth's land surface (nearly 4 billion hectares). Forests provide valuable ecosystem services and goods, serve as a habitat for a wide range of flora and fauna and hold a significant standing stock of global carbon. The total carbon content of forests has been estimated at 638 Gt for 2005, which is more than the amount of carbon in the entire atmosphere. Deforestation, mainly conversion of forests for agriculture activities, has been estimated at an alarming rate of 13 million hectares per year (in the period 1990-2005).
The latest deforestation news
This article was written by Rhett A. Butler [bibliographic citation for this page] and was last updated on the most recent date listed in the column on the right side.
Other pages in this section:
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Recent news
A Tasmanian tragedy? : How the forestry industry has torn an island apart
(07/02/2009) This is by no means a new battle: in fact, Tasmanian industrial foresters and environmentalists have been fighting over the issue of clearcutting the island’s forests for decades. The battle—some would probably prefer 'war'—is over nothing less than the future of Tasmania. Some Tasmanians see the rich forests that surround them in terms of income, dollars and cents; they see money literally growing on trees, or more appropriately growing on monoculture plantations and government owned native forests. They see the wilderness of Tasmania as an exploitative resource.
Brazil's development bank to require beef-tracking system to avoid illegal Amazon deforestation
(07/01/2009) Responding to allegations that major Brazilian cattle producers are responsible for illegal forest clearing in the Amazon, Brazil's development bank BNDES will soon require processors to trace the origin of beef back to the ranch where it was produced in order to qualify for loans, reports Brazil's Agencia Estado. The traceability program aims to ensure that cattle products do not come from illegally deforested land.
NASA images show huge drop in Amazon fires in 2008
(06/30/2009) New NASA research shows a sharp decline in the amount of smoke over the Amazon during the 2008 burning season, coinciding with a drop in deforestation reported last week by Carlos Minc, Brazil's Environment Minister. Analyzing the aerosol concentrations over the Amazon each September from the past four burning seasons using the Ozone Monitoring Instrument on NASA's Aura satellite, atmospheric scientist Omar Torres of Hampton University and several colleagues found a dramatic decline in airborne particular matter in 2008, indicating reduced incidence of fire in the region. Fire in the Amazon is primarily used by humans for land-clearing to establish cattle pasture, which now accounts for the vast majority of land-use change in the world's largest rainforest.
U.S. forgives $30M in debt to protect rainforests in Sumatra, Indonesia
(06/30/2009) The United States will forgive nearly $30 million in debt owed by Indonesia in exchange for increased protection of endangered rainforests on the island of Sumatra, reports the Wall Street Journal. The deal is the largest debt-for-nature swap under the U.S. Tropical Forest Conservation Act — unanimously reauthorized this May by the Senate Foreign Relations Committee last week — and its first such agreement with Indonesia, which has the second highest annual loss of forest cover after Brazil. Under the terms of the pact the government of Indonesia will put $30 million into a trust over the next eight years. The trust will issue annual grants for forest conservation and restoration work in Sumatra, an island that lost nearly half of its forest cover between 1985 and 2007 as a result of logging, conversion for plantations, and forest fires.
A New Idea to Save Tropical Forests Takes Flight
(06/29/2009) Every year, tens of millions of acres of tropical forests are destroyed. This is the most destabilizing human land-use phenomenon on Earth. Tropical forests store more aboveground carbon than any other biome. They harbor more species than all other ecosystems combined. Tropical forests modulate global water, air, and nutrient cycles. They influence planetary energy flows and global weather patterns. Tropical forests provide livelihoods for many of the world’s poorest and marginalized people. Drugs for cancer, malaria, glaucoma, and leukemia are derived from rainforest compounds. Despite all these immense values, tropical forests are vanishing faster than any other natural system. No other threat to human welfare has been so clearly documented and simultaneously left unchecked. Since the 1992 Rio Earth Summit (when more than 100 heads of State gathered to pledge a green future) 500 million acres of tropical forests have been cut or burned. For decades, tropical deforestation has been the No. 1 cause of species extinctions and the No. 2 cause of human greenhouse gas emissions, after the burning of fossil fuels. For decades, a few conservation heroes tried their best to plug holes in the dikes, but by and large the most diverse forests on Earth were in serious decline.
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