Amazon forest and soy in Brazil. Click image for more pictures of soy in the Amazon. (Photo by R. Butler)
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THE IMPACT OF INDUSTRIAL AGRICULTURE IN RAINFORESTS
By Rhett Butler | Last updated July 28, 2012
Agricultural use of some rainforest land proves to be a failure because of the nutrient-deficient, acidic soils of these forests. Nevertheless, many commercial agricultural projects are still carried out on rainforest lands,
although many of these revert to cattle pasture after soils are depleted. Some floodplain regions, like
those of the lower Amazon (várzea), are more suitable for commercial agriculture because annual floods replenish
nutrient stores.
Generally forest clearers use slash-and-burn techniques to clear land, but on a much larger scale
than traditional practices. Instead of burning a mere 2-10 acres (1-4 ha), agriculturalists burn hundreds to thousands
of hectares after felling a tract of forest and leaving it to dry. Burning releases nutrients locked up in vegetation and produces a layer of nutrient-rich material above the otherwise poor soil. The cleared area is quickly planted and supports vigorous growth for a few years, after which the
nutrient stock is depleted and large amounts of fertilizer are required to keep the operation viable. Fertilizer may be washed into local streams, affecting fish and aquatic life. When the use of fertilizer is deemed no longer efficient, the land is abandoned and allowed to
revert to scrub. Drought-resistant grasses may move in or cattle ranchers may plant imported African grasses for
cattle grazing. The land is now only marginally productive and a limited number of cattle can subsist in the area.
When the land is suitable for agriculture, generally large single cash crops like rice, citrus fruits, oil palms, coffee,
coca, opium, tea, soybeans, cacao, rubber, and bananas are cultivated. Some of these crops are better adapted to
such conditions and last longer on cleared forest lands. However, there are several problems with this type of monoculture
(single crop plantations) in the tropics, besides the loss of forest. First, such planting of a single crop makes
the crop highly vulnerable to disease and pests. In natural rainforest, widespread infestations are rare because individuals of a given species are widely
dispersed. Second, the planting of monocultures can be economically risky with the price fluctuations so common in international commodities markets.
Additionally, a single cold spell or drought
can devastate a substantial segment of the agricultural economy.
In the state of Acre in western Brazil, farms and pastures are surrounded by large, undisturbed areas of Amazon rainforest. Since January 2005, many areas in the state have been experiencing severe drought, and the forests have become tinder dry. Since August, agricultural fires—many of them ignited in violation of a state-declared ban—have been escaping control, racing through adjacent fields and spreading into the forests.
These images from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite show a pattern of forest and farmland east of the city of Rio Branco before (top) and after (bottom) the peak of the 2005 agricultural burning season. The images are made from visible, shortwave, and near-infrared light detected by MODIS. Bright green is unburned forest, bright red is recently burned areas, and tan is cleared, but unburned land. Next to some burned fields, the forest appears dark green, or "bruised," probably indicating places where fires escaped from fields and burned into the forest understory.
NASA images by Jesse Allen (NASA Earth Observatory) and Jeff Schmaltz (MODIS Rapid Response), text courtesy of NASA's Earth Observatory.
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The cultivation of some of these crops in mountainous, watershed areas has adverse effects for the environment,
notably the alteration of water cycles and erosion. In Peru, the cultivation of coca plants (containing the basic
ingredient for cocaine) was so widespread in the Andean foothills during the 1980s and 1990s that Peruvian river flood cycles were altered
in some areas, making the high-water season unpredictable. The most serious environmental
concern (other than deforestation) stemming from the cultivation of coca is the dumping of chemicals (including
kerosene, sulfuric acid, acetone, and carbide) used to process coca leaves. However, stopping coca cultivation is
nearly impossible due to simple economics: no crop outperforms coca.
In some parts of the world, large-scale commercial agriculture takes up the majority of the productive floodplain and volcanic soils, while leaving smaller farmers little choice but to cut farmland from the rainforest. The ownership of these large commercial
farms is concentrated in the hands of a wealthy minority, who may benefit from tax incentives to leave some of their
land fallow and not fully employed at any given time. These large farm businesses generally do not employ large numbers of locals, though when they do, workers are
used seasonally for low wages. In recent years, grain production in Brazil and other Latin American countries has widely accelerated. However, most of the money ends up in the hands of a few large landowners who, in more marginal areas, have relied on subsidies to survive the harsh soil and climate conditions. Only through these handouts have these landowners been able to turn a profit.
Amazon Soy
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Annual deforestation rates and annual soy expansion for states in the Brazilian Amazon 1990-2005. Note that the 1995-1996 and 1998-1999 years were negative and do not show up on the chart. Graphs based on Brazilian government data.
Total deforestation and area of soybean cultivation across states in the Brazilian Amazon. Overall soybean cultivation makes up only a small portion of deforestation. Further, soybean expansion and the associated infrastructure development and farmer displacement is driving deforestation by other actors. Note: some soybean farms are established on already degraded rainforest lands and neighboring cerrado ecosystems. Therefore it would be inappropriate to assume the area of soybean planting represents its actual role in deforestation.
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Soy production in the Amazon exploded in the early 1990s following the development of a new variety of soybean suitable to the soils and climate of the region. Most expansion occurred in the cerrado, a wooded grassland ecosystem, and the transition forests in the southern fringes in the Amazon basin, especially in states of Mato Grosso and Pará — direct conversion of rainforests for soy has been relatively limited. Instead, the impact of soy on rainforests is generally seen to be indirect. Soy expansion has driven up land prices, created impetus for infrastructure improvements that promote forest clearing, and displaced cattle ranchers to frontier areas, spurring deforestation.
In recent years soy growers, crushers, and traders have taken steps to reduce the environmental impact of their crop in the Amazon biome. After a damaging Greenpeace campaign in 2006, leading players in the industry agreed to a moratorium on soy grown on newly deforested lands. Independent analysis has shown that growers are mostly abiding by the ban: only 12 of 630 sample areas (1,389 of 157,896 hectares) deforested since July 2006 — the date the moratorium took effect — were planted with soy.
Articles on soy in the Amazon >>
Oil palm fruit cut in half. (Photo by R. Butler) |
Palm oil
Certain types of palm trees produce large red fruit which are rich with oil. After refining, this oil, known as palm oil, can be used to produce all sorts of products, including oils used in foods like chocolates and cookies, cosmetics like makeup, and even biodiesel, a fuel that can be used in cars instead of diesel.
Oil palms, as these trees are called, have very high oil yields -- some of the highest of any crop used for biofuel (plant-based fuel) production. A single hectare (2.5 acres) can produce up to 7 tons of oil, many times what would be produced from the same area of corn, soy, or canola.
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Chart showing annual palm oil production by Malaysia and Indonesia from 1964-2006. Click to enlarge.
Forest cover versus palm oil production in Indonesia.
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Given its high yield and the many uses for its oil, it may seem that oil palm is a great solution to dwindling supplies of fossil fuels and concerns about global warming. However, there are problems is some places where palm oil is being produced, specifically the tropical rainforests of Malaysia and Indonesia.
Nearly 90 percent of global palm oil production was in Malaysia and Indonesia in 2010. Although much of this production took place on land long ago established for agriculture, some of it occurred in areas that were newly cleared specifically for oil palm cultivation. In fact more than half of plantations established since 1990 in those two countries has occurred at the expense of natural forest.
The most threatened ecosystems by expansion of oil palm plantations are rainforests and peatlands. Peatlands are swampy areas where the soils are made of peat — decomposed vegetation. Peat acts as a sponge, soaking up water and helping prevent floods. It also stores large amounts of carbon.
When peatlands are drained, the stored carbon reacts with air to release carbon dioxide into the atmosphere, increasing concentrations of the greenhouse gas. The dry peat then becomes highly flammable, increasing the risk of large-scale fires when plantation developers use fire to clear land and burn agricultural waste.
Greenhouse gas emissions also result when rainforest is cleared for oil palm plantations. Worse, oil palm plantations support very low levels of biodiversity, meaning most of the plants and animals once found in the rainforest must either move or perish. Oil palm plantations are not suitable habitat for wildlife and endangered species like the orangutan, the Sumatran rhino, the pygmy elephant of Borneo, and the Sumatran tiger are all threatened by development for oil palm.
With available land now dwindling in parts of Indonesia and Malaysia, palm oil companies are expanding into new areas, including New Guinea, more remote parts of Borneo and Sumatra, West Africa, and even parts of the Amazon.
Articles on palm oil >>
Palm oil pictures >>
SOLUTIONS SECTION: Sustainable Agriculture in the Rainforest
Review questions:
- How does large-scale agriculture damage the rainforest?
- Why are soybeans generally bad for the Amazon?
- Are palm oil-based biofuels a threat to rainforests?
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CONTENTS
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WEEKLY NEWSLETTER
INTERACT
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Recent news
Central America's largest forest under siege by colonists
(05/06/2013) In the last four years, invading land speculators and peasants have destroyed 150,000 hectares (370,000 acres) of rainforest in Nicaragua's Bosawás Biosphere Reserve, according to the Mayangna and Miskito indigenous peoples who call this forest home. Although Nicaragua recognized the land rights of the indigenous people in 2007, the tribes say the government has not done near-enough to keep illegal settlers out despite recent eviction efforts.
Ant communities more segregated in palm oil plantations than rainforest
(03/21/2013) Ants are an important ecological group in both degraded and natural habitats. They interact with many other species and mediate a range of ecological processes. These interactions are often interpreted in the context of ant mosaics, where dominant species form strict territories, keeping other ants out. This segregation between ant species is well-documented in monoculture plantations. Now new research published in Ecography has shown that these changes are driven by the replacement of rainforests with monocultures and not the arrival of non-native species.
Activists warn of industrial palm oil expansion in Congo rainforest
(02/21/2013) Industrial oil palm plantations are spreading from Malaysia and Indonesia to the Congo raising fears about deforestation and social conflict. A new report by The Rainforest Foundation UK (RFUK), dramatically entitled The Seeds of Destruction, announces that new palm oil plantations in the Congo rainforest will soon increase fivefold to half a million hectares, an area nearly the size of Delaware. But conservationists warn that by ignoring the lessons of palm oil in Southeast Asia, this trend could be disastrous for the region's forests, wildlife, and people.
Controversial palm oil project concession in Cameroon is 89 percent 'dense natural forest'
(02/21/2013) Satellite mapping and aerial surveys have revealed that a controversial palm oil concession in Cameroon is almost entirely covered by "dense natural forest," according to a new report by Greenpeace. The activist group alleges that the concession, owned by Herakles Farms, is under 89 percent forest cover. The U.S.-based corporation intends to build a 70,000 hectare palm oil plantation in a region surrounded by four protected areas, including Korup National Park, but has faced stiff criticism from numerous environmental groups as well as conflict with locals.
From slash-and-burn to Amazon heroes: new video series highlights agricultural transformation
(01/31/2013) A new series of short films is celebrating the innovation of rural farmers in the Manu region of Peru. Home to jaguars, macaws, and tapirs, the Manu region is also one of the top contenders for the world's most biodiverse place. It faces a multitude of threats from road-building to mining to gas and oil concessions. Still the impact of smallscale slash-and-burn farming—once seen as the greatest threat to the Amazon and other rainforest—may be diminishing as farmers, like the first film's Reynaldo (see below), turn to new ways of farming, ones that preserve the forest while providing a better life overall.
More rainforest news
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(03/14/2012) Surging demand for vegetable oil has emerged as an important driver of tropical deforestation over the past two decades and is threatening biodiversity, carbon stocks, and other ecosystem functions in some of the world's most critical forest areas, warns a report published last week by the Union of Concerned Scientists (UCS). But the report sees some reason for optimism, including emerging leadership from some producers, rising demand for "greener" products from buyers, new government policies to monitor deforestation and shift cropland expansion to non-forest area, and partnerships between civil society and key private sector players to improve the sustainability of vegetable oil production.
(10/21/2010) The image of rainforests being torn down by giant bulldozers, felled by chainsaw-wielding loggers, and torched by large-scale developers has never been more poignant. Corporations have today replaced small-scale farmers as the prime drivers of deforestation, a shift that has critical implications for conservation. Until recently deforestation has been driven mostly by poverty—poor people in developing countries clearing forests or depleting other natural resources as they struggle to feed their families. Government policies in the ’60s, ’70s, and ’80s had a multiplier effect, subsidizing agricultural expansion through low-interest loans, infrastructure projects, and ambitious colonization schemes, especially in the Amazon and Indonesia. But over the past two decades, this has changed in many countries due to rural depopulation, a decline in state-sponsored development projects, the rise of globalized financial markets, and a worldwide commodity boom. Deforestation, overfishing, and other forms of environmental degradation are now primarily the result of corporations feeding demand from international consumers. While industrial actors exploit resources more efficiently and cause widespread environmental damage, they also are more sensitive to pressure from consumers and environmental groups. Thus in recent years, it has become easier—and more ethical—for green groups to go after corporations than after poor farmers.
(09/02/2010) More than 80 percent of agricultural expansion in the tropics between 1980 and 2000 came at the expense of forests, reports research published last week in the early online edition of the Proceedings of the National Academy of Sciences (PNAS). The study, based on analysis satellite images collected by the United Nations Food and Agricultural Organization (FAO) and led by Holly Gibbs of Stanford University, found that 55 percent of new agricultural land came at the expense of intact forests, while 28 percent came from disturbed forests. Another six percent came from shrub lands.
(07/22/2010) Tropical deforestation claimed roughly 13 million hectares of forest per year during the first half of this decade, about the same rate of loss as the 1990s. But while the overall numbers have remained relatively constant, they mask a transition of great significance: a shift from poverty-driven to industry-driven deforestation and geographic consolidation of where deforestation occurs. These changes have important implications for efforts to protect the world's remaining tropical forests in that environmental groups now have identifiable targets that may be more responsive to pressure on environmental concerns than tens of millions of impoverished rural farmers. In other words, activists have more leverage than ever to impact corporate behavior as it relates to deforestation. A prime example of this power is evident in a string of successful Greenpeace campaigns, which have targeted some of the largest drivers of deforestation, including the palm oil industry in Indonesia and Malaysia and the soy and cattle industries in the Brazilian Amazon. The campaigns have shared a common approach: target large, conspicuous consumer-facing companies that sell in western markets.
(04/15/2009) Brazil could triple its agricultural without the needing to clear additional rainforest in the Amazon Basin, Roberto Mangabeira Unger, Brazil's Minister of Strategic Affairs, told Bloomberg in an interview. The argument that Brazil can expand its agricultural production without harming the Amazon is a mantra among Brazilian officials. The country has vast tracts of pasture and agricultural land that are being underutilized or have been abandoned, but rapidly appreciating land prices, coupled with poor governance and inconsistent enforcement of environmental laws, means that it is often more profitable to clear new forest land than to rehabilitate pasture.
(07/02/2012) In late May I had the opportunity to fly from Kota Kinabalu in Malaysian Borneo to Imbak Canyon and back. These are some of my photos. Historically Borneo was covered by a range of habitats, including dense tropical rainforests, swampy peatlands, and natural grasslands. But its lowland forests have been aggressively logged for timber and then converted for oil palm plantations.
(06/05/2012) One of the world's largest palm oil companies has become the first to identify and disclose high carbon forests and peatlands in its concessions. Golden Agri-Resources Limited (GAR), the owner of Indonesia's palm oil giant PT SMART Tbk, on Monday published a carbon assessment of its holdings in Indonesian Borneo. The report is an important milestone under GAR's forest conservation policy, which prohibits conversion of land with more than 35 tons of carbon per hectare and moves the company toward a zero deforestation target.
(06/14/2011) For years now, environmentalists have become accustomed to associating palm oil with large-scale destruction of rainforests across Malaysia and Indonesia. Campaigners have linked palm oil-containing products like Girl Scout cookies and soap products to smoldering peatlands and dead orangutans. Now with Brazil announcing plans to dramatically scale-up palm oil production in the Amazon, could the same fate befall Earth's largest rainforest? With this potential there is a frenzy of activity in the Brazilian palm oil sector. Yet there is a conspicuous lack of hand wringing by environmentalists in the Amazon. The reason: done right, oil palm could emerge as a key component in the effort to save the Amazon rainforest. Responsible production there could even force changes in other parts of the world.
(01/26/2011) The commercial shows a typical office setting. A worker sits drearily at a desk, shredding papers and watching minutes tick by on the clock. When his break comes, he takes out a Nestle KitKat bar. As he tears into the package, the viewer, but not the office worker, notices something is amiss—what should be chocolate has been replaced by the dark hairy finger of an orangutan. With the jarring crunch of teeth breaking through bone, the worker bites into the “bar." Drops of blood fall on the keyboard and run down his face. His officemates stare, horrified. The advertisement cuts to a solitary tree standing amid a deforested landscape. A chainsaw whines. The message: Palm oil—an ingredient in many Nestle products—is killing orangutans by destroying their habitat, the rainforests of Borneo and Sumatra.
(10/27/2010) A group of prominent scientists has published an open letter challenging the objectivity of World Growth International, an NGO that claims to operate on behalf of the world's poor, and its leader Alan Oxley, a former trade diplomat who also chairs ITS Global, a marketing firm. The letter, published online in several forums, slams World Growth and ITS Global as a front groups for forestry companies. The scientists note that while the groups have not disclosed their sources of funding, they assert ITS receives funding from Sinar Mas, an Indonesian conglomerate that controls Asia Pulp & Paper (APP), a forest products brand, and Sinar Mas Agro Resources & Technology, a palm oil firm, among other companies.
(10/06/2010) The NGO, The Forest Trust (TFT), made international headlines this year after food giant Nestlé chose them to monitor their sustainability efforts. Nestlé's move followed a Greenpeace campaign that blew-up into a blistering free-for-all on social media sites. For months Nestle was dogged online not just for sourcing palm oil connected to deforestation in Southeast Asia—the focus of Greenpeace's campaign—but for a litany of perceived social and environmental abuses and Nestlé's reactions, which veered from draconian to clumsy to stonily silent. The announcement on May 17th that Nestlé was bending to demands to rid its products of deforestation quickly quelled the storm. Behind the scenes, Nestlé and TFT had been meeting for a number of weeks before the partnership was made official. But can TFT ensure consumers that Nestlé is truly moving forward on cutting deforestation from all of its products?
(01/16/2010) The Malaysian palm oil industry has been broadly accused of contributing to the dramatic decline in orangutan populations in Sabah, a state in northern Borneo, over the past 30 years. The industry has staunchly denied these charges and responded with marketing campaigns claiming the opposite: that oil palm plantations can support and nourish the great red apes. The issue came to a head last October at the Orangutan Colloquium held in Kota Kinabalu. There, confronted by orangutan biologists, the palm oil industry pledged to support restoring forest corridors along rivers in order to help facilitate movement of orangutans between remaining forest reserves across seas of oil palm plantations. Attending NGOs agreed that they would need to work with industry to find a balance that would allow the ongoing survival of orangutans in the wild. Nevertheless the conference was still marked by much of the same rhetoric that has characterized most of these meetings — chief palm oil industry officials again made dubious claims about the environmental stewardship of the industry. However this time there was at least acknowledgment that palm oil needs to play an active role in conservation.
(01/12/2010) Palm oil is one of the world's most traded and versatile agricultural commodities. It can be used as edible vegetable oil, industrial lubricant, raw material in cosmetic and skincare products and feedstock for biofuel production. Growing global demand for palm oil and the ensuing cropland expansion has been blamed for a wide range of environmental ills, including tropical deforestation, peatland degradation, biodiversity loss and CO2 emissions. In response to these concerns, a group of stakeholders—including activists, investors, producers and retailers—formed the Roundtable on Sustainable Palm Oil (RSPO) to develop a certification scheme for palm oil produced through environmentally- and socially-responsible ways. It is widely anticipated that the creation of a premium market for RSPO-certified sustainable palm oil (CSPO) would incentivize palm oil producers to improve their management practices.
(09/24/2009) Of the world's two species of orangutan, a great ape that shares 96 percent of man's genetic makeup, the Sumatran orangutan is considerably more endangered than its cousin in Borneo. Today there are believed to be fewer than 7,000 Sumatran orangutans in the wild, a consequence of the wildlife trade, hunting, and accelerating destruction of their native forest habitat by loggers, small-scale farmers, and agribusiness. Gunung Leuser National Park in North Sumatra is one of the last strongholds for the species, serving as a refuge among paper pulp concessions and rubber and oil palm plantations. While orangutans are relatively well protected in areas around tourist centers, they are affected by poorly regulated interactions with tourists, which have increased the risk of disease and resulted in high mortality rates among infants near tourist centers like Bukit Lawang. Further, orangutans that range outside the park or live in remote areas or on its margins face conflicts with developers, including loggers, who may or may not know about the existence of the park, and plantation workers, who may kill any orangutans they encounter in the fields. Working to improve the fate of orangutans that find their way into plantations and unprotected community areas is the Orangutan Information Center (OIC), a local NGO that collaborates with the Sumatran Orangutan Society (SOS).
(08/20/2009) A baby orangutan ambles across the grass at the Borneo Orangutan Survival Foundation’s Nyaru Menteng rehabilitation center in Central Kalimantan, in the heart of Indonesian Borneo. The ape pauses, picks up a stick and makes his way over to a plastic log, lined with small holes. Breaking the stick in two, he pokes one end into a hole in an effort to extract honey that has been deposited by a conservation worker. His expression shows the tool’s use has been fruitful. But he is not alone. To his right another orangutan has turned half a coconut shell into a helmet, two others wrestle on the lawn, and another youngster scales a papaya tree. There are dozens of orangutans, all of which are about the same age. Just outside the compound, dozens of younger orangutans are getting climbing lessons from the Borneo Orangutan Survival Foundation (BOS) staff, while still younger orangutans are being fed milk from bottles in a nearby nursery. Still more orangutans—teenagers and adults—can be found on “Orangutan Island” beyond the center’s main grounds. Meanwhile several recently wild orangutans sit in cages. This is a waiting game. BOS hopes to eventually release all of these orangutans back into their natural habitat—the majestic rainforests and swampy peatlands of Central Kalimantan, on the island of Borneo. But for many, this is a fate that may never be realized.
(08/12/2009) A new report from published by the Center for International Forestry Research (CIFOR) highlights the benefits — and controversies — of large-scale expansion of oil palm agriculture in Southeast Asia. The review, titled "The impacts and opportunities of oil palm in Southeast Asia: What do we know and what do we need to know?", notes that while oil palm is a highly productive and profitable crop, there are serious concerns about its environmental and social impact when established on disputed land or in place of tropical forests and peatlands.
(06/01/2009) Despite worldwide attention and concern, prime orangutan habitat across Sumatra and Borneo continues to be destroyed by loggers and palm oil developers, resulting in the death of up to 3,000 orangutans per year (of a population less than 50,000). Conservation groups like Borneo Orangutan Survival report rescuing record numbers of infant orangutans from oil palm plantations, which are now a far bigger source of orphaned orangutans than the illicit pet trade. The volume of orangutans entering care centers is such that these facilities are running out of room for rescued apes, with translocated individuals sometimes waiting several months until suitable forest is found for reintroduction. Even then they aren't safe; in recent months loggers have started clearing two important reintroduction sites (forests near Bukit Tigapuluh National Park in Sumatra and Mawas in Central Kalimantan). Meanwhile across half a dozen rehabilitation centers in Malaysia and Indonesia, more than 1,000 baby orangutans—their mothers killed by oil palm plantation workers or in the process of forest clearing—are being trained by humans for hopeful reintroduction into the wild, assuming secure habitat can be found. Dismayed by the rising orangutan toll, a grassroots organization in Central Kalimantan is fighting back. Led by Hardi Baktiantoro, the Center for Orangutan Protection (COP) has mounted a guerrilla-style campaign against companies that are destroying orangutan habitat in Kalimantan, the Indonesian part of Borneo.
