How much forest was lost in 2017?

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This is an archive of the Forest Pulse, which is updated annually using annual tree cover loss data to provide a comprehensive overview on where forests have been lost around the world. Annual updates are released each year and cover the previous year’s trends. View the latest analysis here.

2017 Was the Second-Worst Year on Record for Tropical Tree Cover Loss

By Mikaela Weisse and Elizabeth Goldman

Last year was the second-worst on record for tropical tree cover loss, according to new data from the University of Maryland, released today on Global Forest Watch. In total, the tropics experienced 15.8 million hectares (39.0 million acres) of tree cover loss in 2017, an area the size of Bangladesh. That’s the equivalent of losing 40 football fields of trees every minute for an entire year.

Despite concerted efforts to reduce tropical deforestation, tree cover loss has been rising steadily in the tropics over the past 17 years. Natural disasters like fires and tropical storms are playing an increasing role, especially as climate change makes them more frequent and severe. But clearing of forests for agriculture and other uses continues to drive large-scale deforestation.

Here’s a snapshot of tree cover loss in key tropical countries last year:

Colombia Sees Tree Cover Loss Spike in Post-Conflict Era

Colombia faced one of the most dramatic increases in tree cover loss of any country, with a 46 percent rise compared to 2016, and more than double the rate of loss from 2001-2015. Almost half of the increase happened in just three regions on the border of the Amazon biome (Meta, Guaviare and Caquetá), with new hotspots of loss advancing into previously untouched areas.

The rapid increase in tree cover loss happened as peace came to the country. Last year, the Revolutionary Armed Forces of Colombia (FARC), the country’s largest rebel group, was pushed out of large amounts of remote forest they previously controlled. The FARC kept tight control over land use and allowed little commercial use of resources – with the demobilization, a power vacuum has emerged, leading to illegal clearing for pasture and coca, mining and logging by other armed groups. Land speculation is rampant, as people occupy and deforest new areas in the hopes of getting a land title under the forthcoming rural reform law, a key component of the Peace Agreement. Abandoned FARC trails are also providing access to previously remote forest areas, with some regional governments officially expanding these roads to promote development.

The Colombian government is actively working to slow forest destruction and, in fact, was recently ordered by the Supreme Court to get deforestation in the Amazon under control. The government has already cancelled a major highway project connecting Venezuela and Ecuador, destroyed several illegal roads, expanded Chiribiquete National Park by 1.5 million hectares, and launched the “Green Belt” initiative to protect and restore a 9.2-million-hectare forest corridor. It’s too early to tell if these actions and others will be enough to slow the country’s rampant forest loss.

Brazil’s Tree Cover Loss Remains High Despite Previous Declines

Brazil experienced its second-highest rate of tree cover loss in 2017, after a prominent spike in 2016.

The rise comes despite declining deforestation rates, and is mainly due to fires in the Amazon. The Amazon region had more fires in 2017 than any year since recording began in 1999, causing 31 percent of the region’s tree cover loss according to University of Maryland data, which for the first time attributed specific instances of tree cover loss to fires. Though forests are likely to recover since fires mainly cause degradation rather than deforestation (read more here), the blazes have counteracted Brazil’s decline in deforestation-related carbon emissions since the early 2000s.

While the southern Amazon did face a drought in 2017, almost all fires in the region were set by people to clear land for pasture or agriculture. Lack of enforcement on prohibitions of fires and deforestation, political and economic uncertainty, and the current administration’s roll-back of environmental protections are likely contributors to the high amount of fires and related tree cover loss.

Experts are also concerned that high levels of fires and forest degradation are becoming the new normal in the Amazon. Climate change combined with human-caused deforestation is increasing the prevalence of drought, making the landscape more vulnerable to fires.

Forest clearing for other uses is also apparent throughout the country, with evidence of agriculture, ranching and intensive logging incursion into previously intact forests in the states of Amazonas, Mato Grosso, Pará, Rondônia and Roraima.

Indonesia Sees Encouraging Drop in Primary Forest Loss

Unlike most tropical forests, Indonesia experienced a drop in tree cover loss in 2017, including a 60 percent decline in primary forest loss. While some provinces in Sumatra still saw increased primary forest loss—including 7,500 hectares (18,500 acres) in the Kerinci Seblat National Park— provinces in Kalimantan and Papua experienced a reduction.

The decrease is likely due in part to the national peat drainage moratorium, in effect since 2016. Primary forest loss in protected peat areas went down by 88 percent between 2016 and 2017, reaching the lowest level ever recorded. Additionally, 2017 was a non-El Niño year, which brought wetter conditions and fewer fires compared to past years. Educational campaigns and increased enforcement of forest laws from local police have also helped prevent land-clearing by fire.

This new development is reason to be cautiously optimistic, but only time and another El Niño year will reveal how effective these policies really are.

Tree Cover Loss in the Democratic Republic of Congo Reaches Record High

Tree cover loss in the Democratic Republic of Congo (DRC) reached a record high in 2017, increasing 6 percent from 2016. Agriculture, artisanal logging and charcoal production drove the tree cover loss, with nearly 70 percent of it occurring in agricultural areas known as the rural complex. While shifting cultivation does not necessarily indicate expansion into primary forest, growing populations can intensify agricultural practices, thus reducing fallow periods where trees regrow naturally. Our analysis also showed that in 2017, 3 percent of overall tree cover loss occurred in protected areas and 10 percent within logging concessions.

For the past 16 years, DRC has had a moratorium on new industrial logging concessions, but the government reinstated concessions to two companies in 2018. Environmentalists worry that opening the forest to additional logging could exacerbate the country’s growing deforestation problem. But there is more to DRC’s tree cover loss than industrial logging concessions. While the moratorium applied only to industrial logging, artisanal logging, often illegal, also soared. Given the increasing trends observed in 2016 and 2017, it is critical that DRC move ahead with improved land use planning and forest law enforcement while enforcing better management practices.

Hurricanes Disrupt Forests in the Caribbean

The extreme hurricane season of 2017 that killed thousands and caused billions of dollars of destruction in the Caribbean also had adverse impacts on the region’s forests. The island of Dominica lost 32 percent of its tree cover in 2017, while Puerto Rico lost 10 percent, including significant losses in El Yunque National Forest. While tropical forests in cyclone zones are naturally resilient to storms, scientists worry about their ability to recover in the face of more powerful storms due to climate change.

Seeing Forests for More than Just the Trees

The steady increase in tropical tree cover loss is alarming, and the new data further demonstrates that current efforts to reduce deforestation are insufficient.

Beyond sheltering biodiversity and providing human livelihoods, forests also play a critical role in storing carbon. But while forest conservation could provide nearly 30 percent of the solution for limiting global temperature rise to 2 degrees C, the limit scientists say is necessary for preventing the worst impacts of climate change, only 2 percent of climate finance goes to the forest sector. If the world is serious about curbing climate change, all countries need to step up efforts to reduce deforestation.

Leaders are meeting today at the Oslo Tropical Forest Forum to reflect on progress to date and discuss plans for the future. Given the dire news from 2017, it’s clear that anti-deforestation efforts are more important than ever.

The authors would like to acknowledge Matt Hansen, Peter Potapov, Svetlana Turubanova, Patrick Lola Amani, Andre Lima, Chima Okpa, and Marc Steininger who updated the tree cover loss data.

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Dark surfaces absorb the rays from the sun (low albedo).\r\n"},"94":{"name":"biodiversity intactness","description":"The proportion and abundance of a location\u0027s original forest community (number of species and individuals) that remain.\u0026nbsp;\r\n"},"95":{"name":"biodiversity significance","description":"The importance of an area for the persistence of forest-dependent species based on range rarity.\r\n"},"142":{"name":"boundary plantings","description":"Trees planted along boundaries or property lines to mark them well.\r\n"},"98":{"name":"carbon dioxide equivalent (CO2e)","description":"Carbon dioxide equivalent (CO2e) is a measure used to aggregate emissions from various greenhouse gases (GHGs) on the basis of their 100-year global warming potentials by equating non-CO2 GHGs to the equivalent amount of CO2.\r\n"},"99":{"name":"CO2e","description":"Carbon dioxide equivalent (CO2e) is a measure used to aggregate emissions from various greenhouse gases (GHGs) on the basis of their 100-year global warming potentials by equating non-CO2 GHGs to the equivalent amount of CO2.\r\n"},"1":{"name":"deforestation","description":"The change from forest to another land cover or land use, such as forest to plantation or forest to urban area.\r\n"},"77":{"name":"deforested","description":"The change from forest to another land cover or land use, such as forest to plantation or forest to urban area.\r\n"},"76":{"name":"degradation","description":"The reduction in a forest\u2019s ability to perform ecosystem services, such as carbon storage and water regulation, due to natural and anthropogenic changes.\r\n"},"75":{"name":"degraded","description":"The reduction in a forest\u2019s ability to perform ecosystem services, such as carbon storage and water regulation, due to natural and anthropogenic changes.\r\n"},"79":{"name":"disturbances","description":"A discrete event that changes the structure of a forest ecosystem.\r\n"},"68":{"name":"disturbed","description":"A discrete event that changes the structure of a forest ecosystem.\r\n"},"65":{"name":"driver of tree cover loss","description":"The direct cause of forest disturbance.\r\n"},"70":{"name":"drivers of loss","description":"The direct cause of forest disturbance.\r\n"},"81":{"name":"drivers of tree cover loss","description":"The direct cause of forest disturbance.\r\n"},"102":{"name":"evapotranspiration","description":"When solar energy hitting a forest converts liquid water into water vapor (carrying energy as latent heat) through evaporation and transpiration.\r\n"},"2":{"name":"forest","description":"Forests include tree cover greater than 30 percent tree canopy density and greater than 5 meters in height as mapped at a 30-meter Landsat pixel scale.\r\n"},"3":{"name":"forest concession","description":"A legal agreement allowing an entity the right to manage a public forest for production purposes.\r\n"},"90":{"name":"forest concessions","description":"A legal agreement allowing an entity the right to manage a public forest for production purposes.\r\n"},"53":{"name":"forest degradation","description":"The reduction in a forest\u2019s ability to perform ecosystem services, such as carbon storage and water regulation, due to natural and anthropogenic changes.\r\n"},"54":{"name":"forest disturbance","description":"A discrete event that changes the structure of a forest ecosystem.\r\n"},"100":{"name":"forest disturbances","description":"A discrete event that changes the structure of a forest ecosystem.\r\n"},"5":{"name":"forest fragmentation","description":"The breaking of large, contiguous forests into smaller pieces, with other land cover types interspersed.\r\n"},"6":{"name":"forest management plan","description":"A plan that documents the stewardship and use of forests and other wooded land to meet environmental, economic, social, and cultural objectives. Such plans are typically implemented by companies in forest concessions.\r\n"},"62":{"name":"forests","description":"Forests include tree cover greater than 30 percent tree canopy density and greater than 5 meters in height as mapped at a 30-meter Landsat pixel scale.\r\n"},"69":{"name":"fragmentation","description":"The breaking of large, contiguous forests into smaller pieces, with other land cover types interspersed.\r\n"},"80":{"name":"fragmented","description":"The breaking of large, contiguous forests into smaller pieces, with other land cover types interspersed.\r\n"},"74":{"name":"gain","description":"The establishment of tree canopy in an area that previously had no tree cover. Tree cover gain may indicate a number of potential activities, including natural forest growth or the crop rotation cycle of tree plantations.\r\n"},"143":{"name":"global land squeeze","description":"Pressure on finite land resources to produce food, feed and fuel for a growing human population while also sustaining biodiversity and providing ecosystem services.\r\n"},"7":{"name":"hectare","description":"One hectare equals 100 square meters, 2.47 acres, or 0.01 square kilometers and is about the size of a rugby field. A football pitch is slightly smaller than a hectare (pitches are between 0.62 and 0.82 hectares).\r\n"},"66":{"name":"hectares","description":"One hectare equals 100 square meters, 2.47 acres, or 0.01 square kilometers and is about the size of a rugby field. A football pitch is slightly smaller than a hectare (pitches are between 0.62 and 0.82 hectares).\r\n"},"67":{"name":"intact","description":"A forest that contains no signs of human activity or habitat fragmentation as determined by remote sensing images and is large enough to maintain all native biological biodiversity.\r\n"},"78":{"name":"intact forest","description":"A forest that contains no signs of human activity or habitat fragmentation as determined by remote sensing images and is large enough to maintain all native biological biodiversity.\r\n"},"8":{"name":"intact forests","description":"A forest that contains no signs of human activity or habitat fragmentation as determined by remote sensing images and is large enough to maintain all native biological biodiversity.\r\n"},"55":{"name":"land and environmental defenders","description":"People who peacefully promote and protect rights related to land and\/or the environment.\r\n"},"9":{"name":"loss driver","description":"The direct cause of forest disturbance.\r\n"},"10":{"name":"low tree canopy density","description":"Less than 30 percent tree canopy density.\r\n"},"84":{"name":"managed forest concession","description":"Areas where governments have given rights to private companies to harvest timber and other wood products from natural forests on public lands.\r\n"},"83":{"name":"managed forest concession maps for nine countries","description":"Cameroon, Canada, Central African Republic, Democratic Republic of the Congo, Equatorial Guinea, Gabon, Indonesia, Liberia, and the Republic of the Congo\r\n"},"104":{"name":"managed natural forests","description":"Naturally regenerated forests with signs of management, including logging, clear cuts, etc.\r\n"},"91":{"name":"megacities","description":"A city with more than 10 million people.\r\n"},"57":{"name":"megacity","description":"A city with more than 10 million people."},"56":{"name":"mosaic restoration","description":"Restoration that integrates trees into mixed-use landscapes, such as agricultural lands and settlements, where trees can support people through improved water quality, increased soil fertility, and other ecosystem services. This type of restoration is more likely in deforested or degraded forest landscapes with moderate population density (10\u2013100 people per square kilometer). "},"86":{"name":"natural","description":"A forest that is grown without human intervention.\r\n"},"12":{"name":"natural forest","description":"A forest that is grown without human intervention.\r\n"},"63":{"name":"natural forests","description":"A forest that is grown without human intervention.\r\n"},"144":{"name":"open canopy systems","description":"Individual tree crowns that do not overlap to form a continuous canopy layer.\r\n"},"82":{"name":"persistent gain","description":"Forests that have experienced one gain event from 2001 to 2016.\r\n"},"13":{"name":"persistent loss and gain","description":"Forests that have experienced one loss or one gain event from 2001 to 2016."},"97":{"name":"plantation","description":"An area in which trees have been planted, generally for commercial purposes.\u0026nbsp;\r\n"},"93":{"name":"plantations","description":"An area in which trees have been planted, generally for commercial purposes.\u0026nbsp;\r\n"},"88":{"name":"planted","description":"A forest composed of trees that have been deliberately planted and\/or seeded by humans.\r\n"},"14":{"name":"planted forest","description":"Stand of planted trees \u2014 other than tree crops \u2014 grown for wood and wood fiber production or for ecosystem protection against wind and\/or soil erosion.\r\n"},"73":{"name":"planted forests","description":"Stand of planted trees \u2014 other than tree crops \u2014 grown for wood and wood fiber production or for ecosystem protection against wind and\/or soil erosion."},"148":{"name":"planted trees","description":"Stand of trees established through planting, including both planted forest and tree crops."},"149":{"name":"Planted trees","description":"Stand of trees established through planting, including both planted forest and tree crops."},"15":{"name":"primary forest","description":"Old-growth forests that are typically high in carbon stock and rich in biodiversity. The GFR uses a humid tropical primary rainforest data set, representing forests in the humid tropics that have not been cleared in recent years.\r\n"},"64":{"name":"primary forests","description":"Old-growth forests that are typically high in carbon stock and rich in biodiversity. The GFR uses a humid tropical primary rainforest data set, representing forests in the humid tropics that have not been cleared in recent years.\r\n"},"58":{"name":"production forest","description":"A forest where the primary management objective is to produce timber, pulp, fuelwood, and\/or nonwood forest products."},"89":{"name":"production forests","description":"A forest where the primary management objective is to produce timber, pulp, fuelwood, and\/or nonwood forest products.\r\n"},"87":{"name":"seminatural","description":"A managed forest modified by humans, which can have a different species composition from surrounding natural forests.\r\n"},"59":{"name":"seminatural forests","description":"A managed forest modified by humans, which can have a different species composition from surrounding natural forests. "},"96":{"name":"shifting agriculture","description":"Temporary loss or permanent deforestation due to small- and medium-scale agriculture.\r\n"},"103":{"name":"surface roughness","description":"Surface roughness of forests creates\u0026nbsp;turbulence that slows near-surface winds and cools the land as it lifts heat from low-albedo leaves and moisture from evapotranspiration high into the atmosphere and slows otherwise-drying winds. \r\n"},"17":{"name":"tree cover","description":"All vegetation greater than five meters in height and may take the form of natural forests or plantations across a range of canopy densities. Unless otherwise specified, the GFR uses greater than 30 percent tree canopy density for calculations.\r\n"},"71":{"name":"tree cover canopy density is low","description":"Less than 30 percent tree canopy density.\r\n"},"60":{"name":"tree cover gain","description":"The establishment of tree canopy in an area that previously had no tree cover. Tree cover gain may indicate a number of potential activities, including natural forest growth or the crop rotation cycle of tree plantations.\u0026nbsp;As such, tree cover gain does not equate to restoration.\r\n"},"18":{"name":"tree cover loss","description":"The removal or mortality of tree cover, which can be due to a variety of factors, including mechanical harvesting, fire, disease, or storm damage. As such, loss does not equate to deforestation.\r\n"},"150":{"name":"tree crops","description":"Stand of perennial trees that produce agricultural products, such as rubber, oil palm, coffee, coconut, cocoa and orchards."},"19":{"name":"tree plantation","description":"An agricultural plantation of fast-growing tree species on short rotations for the production of timber, pulp, or fruit.\r\n"},"72":{"name":"tree plantations","description":"An agricultural plantation of fast-growing tree species on short rotations for the production of timber, pulp, or fruit.\r\n"},"85":{"name":"trees outside forests","description":"Trees found in urban areas, alongside roads, or within agricultural land\u0026nbsp;are often referred to as Trees Outside Forests (TOF).\u202f\r\n"},"151":{"name":"unmanaged","description":"Naturally regenerated forests without any signs of management, including primary forest."},"105":{"name":"unmanaged natural forests","description":"Naturally regenerated forests without any signs of management, including primary forest.\r\n"}}}

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