How many trees are being cut down every day
How Many Trees Are Cut Down Each Day & Year?
According to the science journal Nature, approximately 42 million trees are cut down each day (or 15 billion trees each year). Thomas Crowther of the Institute of Ecology, Wageningen, Netherlands, who conducted this research emphasised how the “scale of human impact” on global tree destruction is “astonishing”.
It is estimated that the global number of trees has fallen by appromiately 46% in comparison to pre-agricultural activities (i.e. the start of human civilisation) around 12,000 years ago. Continuing to cut down so many trees on an annual basis is simply not sustainable.
Trees play a vital role within the environment in the form of:
– Providing oxygen
– Helping to store carbon
– Helping to stabilize the soil
– Provide essential wood supplies
Trees, the earth’s biggest plants, also help to absorb pollution from the air (it is estimated that just one tree has the capacity to absorb up to 1. 7 kg of pollutants each year). Trees can also provide protection against solar radiation.
According to Philippe Ciais, a researcher at the Climate Change Research Unit of the Institut Pierre Simon Laplace (IPSL), “saying that the Amazon produces 20% of our oxygen is a bit exaggerated, it’s more like 10 to 12% because the photosynthesis generated in the oceans also contributes to the planet’s oxygen production.”
This is the case since the trees in the Amazon actually consume almost all of the oxygen that they produce as a result of photosynthesis, i.e. the process of transforming light energy into chemical energy in order to fuel organism activities.How many trees are cut down for toilet paper?
According to the National Geographic, each day, almost “270,000 trees are either flushed or dumped in landfills”. It is estimated that approximately 10% of this number (i.e. 27,000 trees) is attributable to toilet paper use.
According to author Noelle Robbins, “increasing demand for toilet paper in developing countries is a critical factor in the impact that toilet paper manufacturers have on forests around the world. ”What are the eco-friendly alternatives to conventional toilet paper?
According to Backpacker, conventional toilet paper made from virgin trees can take between one to three years to decompose. Biodegradable toilet paper options such as bamboo toilet paper have the capacity to break decompose up to four times faster than conventional toilet paper.
Alternative environmentally friendly toilet paper materials include:
- Bamboo toilet tissue
- 100% organic cotton
- 100% recycled bathroom tissue
- Sugarcane toilet tissue
For the eco extremists out there, other options include:
- Old newspapers
- Cotton wool
- Stones (used in times gone by by the Romans and Greeks! – Warning, make sure to sterilize between usages)
- With strong enough water pressure, one can shower directly after using the toilet to avoid toilet paper usage altogether
Existing ‘mainstream’ toilet paper brands ranked on the basis of eco-friendliness:Source: NRDC
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How Many Trees Cut Down Each Year
If you’ve ever wondered how many trees are cut down every year, the shockingly short answer is that more than 15 billion trees are lost annually to deforestation. 5
While that number is staggering, it can be hard to visualize.
The image above makes it a little easier to grasp.
For the 15 billion trees that are chopped down each year, every person on the planet could have 3,000 rolls of toilet paper.
If you imagine 3,000 rolls of toilet paper sitting in your bathroom, they likely wouldn’t all fit. Now imagine how many trees just those 3,000 rolls equate to, and the amount of deforestation it represents.
Without those trees, many endangered animals become more vulnerable and others are forced to find new homes. Plus, the atmosphere is stuck with higher levels of greenhouse gases that would have otherwise been stored by those trees (as a carbon sink). Sadly, many people are unaware of both the causes of deforestation and the impact it is having on our planet.
And if people don’t know about it, how can we stop it?
Why Do People Cut Down Trees? (Hint: It’s Not Paper)
There are a variety of reasons why people cut down so many trees… but here’s a spoiler – paper production is not one of the major causes. Sure, some things like toilet paper and paper goods (plates, paper towels, and paper itself) create a heavy toll on our worldly woodlands, but there are other, far more damaging actions that are destroying the Earth’s forests.
How Many Acres of Trees Are Cut Down Each Year?
As of 2020, the UN estimates the planet is losing over 7,000,000 hectares per year to deforestation.27 Between 1990 and 2015, the world lost 129 million hectares of forest – an area about the size of South Africa.11
Natural forests lost by continent9 include:
- Africa – 3.2 million hectares
- Asia – 1.1 million hectares
- Oceania – 200,000 hectares
- Europe – Due to excellent forest management, Europe did not net a loss of natural forestland in 2015 (the 2020 report has not yet been released)
- North America – 780,000 hectares
- South America – 3.6 million hectares
Consider these numbers with how many trees are in the world currently.
What’s the Definition of Deforestation?
The UN defines deforestation as “the direct human-induced conversion of forested land to non-forested land” or “the conversion of forest to another land use or the long-term reduction of the tree canopy cover below the minimum 10 percent threshold.”11
In plain English, it’s when people cut down or remove forests for whatever reason.
What Are the Five Main Causes of Deforestation?
There are specific causes that spur the destruction of forests, and when combined, the damaging impact on the planet is multiplied. Making matters worse, deforestation destroys natural carbon sinks which help to fight against growing greenhouse gas emissions and carbon footprint calculators along with reports from official governing bodies like the United Nations show that emissions are on the rise.
The following causes are the top five drivers of deforestation and account for the majority of forest cover loss.
Deforestation Cause #1: Farming
Food production – farming and grazing – is the single biggest cause of deforestation in tropical and subtropical countries, accounting for 80% of deforestation between 2000 and 2010. 31
Of course, many people understand that food production is essential, they also argue that there must be ways of balancing the need for thriving forests along with meeting the nutritional needs of people around the world. And, we agree.
Deforestation Cause #2: Grazing and Feeding Livestock
A lot of deforestation is caused by the need for farmland, much of which is used to grow soy. Over 67% of soy is fed to animals, primarily poultry and pigs.35
Soy, palm oil, and cattle ranching are the most significant contributors to agricultural deforestation.31
Deforestation Cause #3: Drilling
Mining and drilling account for about 7% of all deforestation.32
Even when mining doesn’t directly lead to deforestation, the process of extracting resources from the earth often leads to large amounts of pollution. Unfortunately, some studies have shown that over 25% of metal mines worldwide can be found within 10km of a protected area.
For example, 15% of the Amazon is covered by active or planned oil concessions and 8% is covered by mineral concessions.32 This is why 8 Billion Trees is working so hard to fight to rebuild these areas that have been cleared (or are scheduled for clearing).
Deforestation Cause #4: Mining
Mining suffers from the same issues as drilling – it causes deforestation both through the direct clearing of forests and through pollution and industrial accidents.
It can also be prone to ecological disasters such as the infamous 2019 iron mining disaster in Brumadinho, Brazil. There are about 400 iron mines of the same type in the Brazilian state of Minas Gerais, and the Brumadinho disaster occurred just three years after a similar disaster just 75 miles (120km) away.15
Some of these issues could be solved with improved safety and environmental measures, but establishing a unified set of goals and restrictions throughout the world is highly problematic, given that not all nations would follow them.
Therefore, finding ways to work with individual governments is the key. By making an effort to stop ecological destruction, one region at a time, humans can actually do something about the problem, instead of waiting around and just talking about potential solutions.
Deforestation Cause #5: Wildfires
Wildfires are the cause of nearly one-quarter of all deforestation,25 including about half in North America.25 According to the US government, 2.2 million hectares burned this year in California alone with another 800,000 hectares destroyed in the northwestern U.S. – and many of those fires are still burning as of this publication.18 In fact, according to the UN,19 arctic fires in June and July of 2019 released a total of 129 megatons of CO2 resulting in a cloud of soot larger than the European Union.
Needless to say, this form of deforestation has Global Warming implications. The fires that ravaged Australia over the past two years have led to serious and dangerous ecological threats.
Other Reasons for Cutting Trees Down
In addition to the five main causes of deforestation, there are other, lesser-known reasons that so many trees are cut down.
Palm oil is the highest-yield, least expensive form of vegetable oil.29 Because its range is limited to the tropics, much of its market popularity has come at the expense of tropical rainforests. In fact, 90% of palm oil is produced in Malaysia and Indonesia,33 yet these are the only ecosystems that support the orangutan. Only about 2% of global palm oil production is considered sustainable. Palm oil is also used to produce biodiesel.31
Urbanization, complete with sprawling and booming populations, is another indirect cause of deforestation. While not a major cause of deforestation, urbanization is noteworthy for several reasons. First, roads and urban development can fragment forests so that they’re no longer continuous. While this may seem harmless at a glance, fragmentation and edge effects can have a devastating impact on wildlife. 16 With a growing population, cities must expand, so more land is being used for agriculture and livestock to feed those people, and trees are being cut down to make room for it all.
Paper production is one of the more well-known other reasons for deforestation. If you’re wondering, a tree produces about 8,333 sheets of paper.20 A whopping 626,000 tons of paper are used to produce books each year in the US alone.
An average textbook contains about 700 pages, and about 30,000,000 trees are cut down to produce textbooks.20 Fortunately, there are a number of ways to reduce the number of textbooks needed, and many schools are embracing and opting for virtual books to counteract this amount.
The Link between Deforestation and Climate Change
Many people wonder why deforestation is linked to climate change.
The most obvious reason is that according to the US government, deforestation directly contributes to about 12% of all greenhouse gas emissions. 24 Mature trees store carbon in their branches, trunks, leaves, roots, etcetera, and the forests themselves stores large amounts of carbon in their soil, which reduce and remove carbon emissions from the atmosphere.
After deforestation, much of this carbon is released in the form of CO2, a greenhouse gas. Slowing deforestation is viewed as a cost-efficient means of reducing overall greenhouse gas emissions.24
In fact, the UN environmental, developmental, and agricultural chiefs issued a joint statement saying that “Forests are a major, requisite front of action in the global fight against catastrophic climate change – thanks to their unparalleled capacity to absorb and store carbon. Forests capture carbon dioxide at a rate equivalent to about one-third the amount released annually by burning fossil fuels. Stopping deforestation and restoring damaged forests, therefore, could provide up to 30 percent of the climate solution.”
They further noted that “2020 will mark a pivotal moment in humanity’s quest for a sustainable future, when greenhouse gas emissions need to start declining if we are to avoid the most severe impacts of climate change. ”6
The number of how many trees are cut down each year is so staggering, that if they were stacked on top of each other and just 3m (10 ft) tall, they’d reach the moon and back almost six times!
So, why don’t more people know about this cause and effect?
There’s really no one answer to this question. About a third of Americans don’t even believe that Global Warming is real, so it should come as no surprise that they aren’t familiar with the details.3 People also tend to avoid conflict. Americans overestimate the percentage of their peers who don’t believe in climate change.3 The result is that they avoid what they believe to be a controversial topic; in essence, this erroneous belief shuts down communication.
Deforestation in the Amazon
When people think of deforestation, the first thing that often comes to mind is the Amazon. The Amazon Rainforest has been called the lungs of the world, and we have a duty to take care of it. At least 390 billion trees are located in the Amazon.8,23 For perspective, that’s a forest roughly the size of the continental US.34 There are about 2.7 trillion trees in the world, so the Amazon contains about 14% of the world’s trees.5
Which Trees Sequester the Most Carbon?
The shihuahuaco tree sequesters the most carbon of any tree in the Amazon.2 It takes at least 1,000 years for a shihuahuaco tree to grow to its maximum height of 40m (130 ft), but a mature shihuahuaco can sequester 40 tons of carbon. In fact, each shihuahuaco sequesters about as much carbon as 1/3 of a hectare in the Amazon.1
Likewise, Mangroves are particularly good at sequestering carbon because their root system is particularly designed to store CO2.
Why Biodiversity Is Crucial to Survival
The World Health Organization has concluded that biodiversity is critical for sustaining the ecosystems that we rely on for our nutritional needs. 30 It has also noted that along with the loss of biodiversity, we are losing many critical genes and chemicals before scientists get a chance to study them.
Understanding Rainforest Deforestation And Its Current Impact
Keeping the planets’ trees healthy and populous is not only good for the climate, it’s good for all of our existence. Trees are one of nature’s powerful ‘carbon sinks,’ areas that sequester and remove carbon dioxide from the atmosphere.
Since we’re making more and more CO2 every day, and simultaneously removing the planet’s method to deal with it… the equation is hugely imbalanced.
Rainforests and Jungles (Philippines Rainforest and More)
Although only about 7% of the world is covered with tropical rainforests, their ecosystems contain about half of the world’s species.14 Further, tropical rainforests store more carbon than other types of forests.14
It’s difficult to find up-to-date statistics for Philippine deforestation due to funding issues, but from 2003-2010, the Philippines lost nearly 1% (50,000 hectares) of its forests per year. 9 This is particularly distressing as the Philippines is considered to be a biodiversity hotspot.28
Deforestation in America And Deforestation Rates
From the moment the first colonists set foot in America, deforestation began. It hasn’t stopped. In the US, deforestation rates are at about 385,000 hectares per year, but that’s not the entire story.
The US contains about 8% of the world’s forests; nearly 1/3 of the country is forestland or about 304 million hectares.26 Just over half belongs to the government; the rest belongs to private entities.
Despite losing about 385,000 hectares per year and harvesting nearly 4,000,000 hectares of timber each year between 1990 and 2010, reforestation efforts led to a net gain of over 7,500,000 over that period – or about 375,000 hectares per year.4
As mentioned previously, 2020 was a record-breaking year for wildfires, and not in a good way. Climate change is forcing America to reevaluate forest management, and unless action is taken soon, years like 2020 could one day become the norm.
Effects of Deforestation and the Dangerous Impact of Deforestation
We’ve already mentioned the fact that deforestation is actually making pandemics happen, but the additional loss of biodiversity and associated consequences aren’t actually the scariest thing about deforestation. Forests can actually have profound impacts on the weather. The rainforests of South America, for example, don’t just impact weather in South America – there’s evidence to suggest that they actually impact the global water cycle.17Thirsty?
Deforestation affects ecosystems, nutrition, weather patterns, and even the climate.17 But, it also impacts wildlife by destroying habitats and ecosystems, and there are other results:
- Ecosystems—About 80% of the earth’s terrestrial animals live in forests. Deforestation is an existential threat to many of them.
- Human Welfare—About 250,000,000 people live in forests or savannas and depend on them for their well-being.
- Air Quality—Forests have an enormous effect on the quality of the air we breathe. They act like a filter that strips much of the pollution (and carbon dioxide) out of the atmosphere.
- Global Warming—Forests act as carbon sinks, absorbing large amounts of CO2 (a greenhouse gas) from the atmosphere and storing it in the form of trunks, branches, leaves, etc. Deforestation destroys the trees; this both releases the carbon they’ve stored and prevents them from storing more
- Carbon – a double whammy. According to the World Resources Institute, if tropical deforestation (tropical alone!) were a country, it would rate third in CO2 equivalent emissions behind the US and China.13
- Water—Forests have a large impact on the water cycle and are critical for sustaining the water supplies of many nations such as Brazil due to their impact on the weather.
Finding Solutions to Deforestation
This problem is huge! But, there are ways to combat it.
Imagine what would happen if a farmer harvests his crops, but never planted new ones! It doesn’t take a genius to figure out that things won’t end well, but that’s exactly what’s happening with our forests in much of the world.
In fact, we’ve lost 46% of the forests that existed at the dawn of human civilization.5 Forest management isn’t just our moral obligation to the planet – it’s common sense.
Speak out. Make a difference. Make your voice heard. The US and Europe have stabilized their net rates of deforestation and have actually begun gaining trees in recent years. These sustainable models could work elsewhere, but only if we all work together.
Support Tree Planting Groups
You have the power to make a big difference in controlling and eliminating the impacts of deforestation. Many groups around the world are working to plant trees every day, and a small effort on the part of everyone could turn the tide and reduce the number of trees cut down every minute, every day, and every year.
To see a full list of tree planting organizations click here.
1Amazon Aid Foundation. (2020, February 04). The Ancient Shihuahuaco: the Amazon’s tree of life. Retrieved from Amazon Aid Foundation: <https://amazonaid.org/the-ancient-shihuahuaco-the-amazons-tree-of-life/>
2Amazon Conservation. (2019, March 28). Two Ancient Icons of the Neotropics. Retrieved from News and Resources: <https://www.amazonconservation.org/two-ancient-icons-of-the-neotropics/>
3Ballew, M., & al., e. (2019, July 02). Americans Underestimate How Many Others in the U.S. Think Global Warming is Happening. Retrieved from Yale Program on Climate Change Communication: <https://climatecommunication.yale.edu/publications/americans-underestimate-how-many-others-in-the-u-s-think-global-warming-is-happening/>
4Becker, A. (n.d.). Rates of Deforestation & Reforestation in the U.S. Retrieved from Seattle Pi: <https://education. seattlepi.com/rates-deforestation-reforestation-us-3804.html>
5Crowther, T., Glick, H., Covey, K., & al, e. (2015, September 2). Mapping tree density at a global scale. Nature(525), 201-205. Retrieved from <https://www.nature.com/articles/nature14967>
6Director-General, J. G. (2018, October 03). Forests: A natural solution to climate change, crucial for a sustainable future. Retrieved from UN-REDD: <https://www.un-redd.org/post/2018/10/03/forests-a-natural-solution-to-climate-change-crucial-for-a-sustainable-future>
7ecofriendly.blogspot.com. (2010, 01). Ecofriendly.blogspot.com. Retrieved from Deforestation Effects: <http://be-eco-friendly.blogspot.com/2010/01/deforestation-effects.html>
8Field Museum. (2013, October 17). Field Museum scientists estimate 16,000 tree species in the Amazon. Retrieved from EurekAlert!: p <https://www.eurekalert.org/pub_releases/2013-10/fm-fms101413.ph>
9Food and Agricultural Organization. (2014). Global Forest Resources Assessment 2015 Philippines. Rome: United Nations. Retrieved from <http://www.fao.org/3/a-az306e.pdf>
10Food and Agricultural Organization of the United Nations. (2007). Forest and Climate Change Working Paper 5. Retrieved from Food and Agricultural Organization of the United Nations: Food and Agricultural Organization of the United Nations
11Food and Agriculture Organization of the United Nations. (2016). Global Forests Resource Assessment 2015. Rome: The United Nations. Retrieved from <http://www.fao.org/3/a-i4793e.pdf>
12Gallagher, A. (2019, January 07). Bogs and Blogs – Palm Oil. Retrieved from Lough Neagh Landscape Partnership: <https://www.loughneaghlp.com/palm-oil/>
13Gibbs, D., Harry, N., & Seymour, F. (2018, October 04). By the Numbers: The Value of Tropical Forests in the Climate Change Equation. Retrieved from World Resource Institute: <https://www.wri. org/blog/2018/10/numbers-value-tropical-forests-climate-change-equation>
14Jane Goodall Foundation. (2009, June 05). Deforestation. Retrieved from <https://www.youtube.com/watch?v=jq2UHiyYwLo>
15Jornal Nacional. (2019, January 26). Technicians assess extent of environmental damage from dam disruption. Retrieved from Jornal Nacional: <https://g1.globo.com/jornal-nacional/noticia/2019/01/26/tecnicos-avaliam-extensao-do-dano-ambiental-de-rompimento-da-barragem.ghtml>
16Murcia, C. (1995). Edge Effects In Fragmented Forests: Implications for Conservation. Trends in Ecology and Evolution, 58-62. Retrieved from <https://www.researchgate.net/publication/49757343_Edge_Effects_in_Fragmented_Forests_Implications_for_Conservation>
17National Geographic. (n.d.). Deforestation explained. Retrieved from Reference (National Geographic): <https://www.nationalgeographic.com/environment/global-warming/deforestation/>
18National Large Incident Year-to-Date Report. (2020). National Large Incident Year-to-Date Report. National Large Incident Year-to-Date Report. Retrieved from <https://gacc.nifc.gov/sacc/predictive/intelligence/NationalLargeIncidentYTDReport.pdf>
19Nations, S. G. (2019, September 23). Meetings Coverage and Press Releases. Retrieved from As Wildfires, Heatwaves Sweep Globe, Urgent Action Key to Stopping Alarming Rate of Deforestation, Secretary-General Warns at Alliance for Rainforests Event: <https://www.un.org/press/en/2019/sgsm19755.doc.htm>
20Planet Blue. (2020). PROMOTE ENVIRONMENTAL BENEFITS. Retrieved from Planet Blue, University of Michigan: <http://sustainability.umich.edu/environ211/reduce-textbook-waste/promote-environmental-benefits>
21Planet Blue. (2020). Reduce Textbook Waste. Retrieved from Planet Blue, University of Michigan: <http://sustainability.umich.edu/environ211/reduce-textbook-waste>
22Smith, M. (2019). New YouGov study of 30,000 people in 28 countries and regions uncovers noticeable differences in attitudes between East and West. London: yougov.co.uk. Retrieved from <https://yougov.co.uk/topics/science/articles-reports/2019/09/15/international-poll-most-expect-feel-impact-climate>
23Steeg, H. t. (2013). Hyperdominance in the Amazonian Tree Flora. Science. Retrieved from <https://science.sciencemag.org/content/342/6156/1243092/tab-pdf>
24The Congressional Budget Office (US). (2012). Deforestation and Greenhouse Gases. Washington, DC: The Congressional Budget Office (US). Retrieved from <https://www.cbo.gov/publication/42686>
25The Sustainable Consortium. (2018, May 16). Forest Data. Retrieved from The Sustainable Consortium: <https://www.sustainabilityconsortium.org/tsc-downloads/forest-data/>
26Tidwell, T. (2016, September 04). State of Forests and Forestry in the United States. Honolulu, Hawaii, USA. Retrieved from State of Forests and Forestry in the United States <https://www.fs.usda.gov/speeches/state-forests-and-forestry-united-states-1>
27United Nations Environment Programme. (2020, 11 1). UN Environment. Retrieved from Forests: <https://www.unenvironment.org/explore-topics/forests>
28USAID. (2016, August 17). PHILIPPINES BIODIVERSITY AND WATERSHEDS IMPROVED FOR STRONGER ECONOMY AND ECOSYSTEM RESILIENCE (B+WISER) PROGRAM. Retrieved from USAID – Philippines: <https://www.usaid.gov/philippines/energy-and-environment/bwiser>
29Vijay, V., Pimm, S. L., Jenkins, C. N., & Smith, S. J. (2016). The Impacts of Oil Palm on Recent Deforestation and Biodiversity Loss. PLOS One. Retrieved from <https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0159668&xid=17259,15700022,15700186,15700190,15700256,15700259,15700262,15700265,15700271>
30World Health Organization. (n.d.). Biodiversity. Retrieved from <https://www.who.int/news-room/fact-sheets/detail/biodiversity-and-health>
31Yale School of the Environment. (2020). Biofuels. Retrieved from Global Forest Atlas: <https://globalforestatlas. yale.edu/land-use/industrial-agriculture/biofuels>
32Yale School of the Environment. (2020). Mining Extraction. Retrieved from Global Forest Atlas: <https://globalforestatlas.yale.edu/land-use/mining-extraction>
33Yale School of the Environment. (2020). Palm Oil. Retrieved from Global Forest Atlas: <https://globalforestatlas.yale.edu/land-use/industrial-agriculture/palm-oil>
34Yale School of the Environment. (2020). The Amazon Basin Forest. Retrieved from Global Forest Atlas: <https://globalforestatlas.yale.edu/region/amazon#:~:text=The%20Amazon%20basin%20is%20the,and%2015%25%20of%20its%20freshwater.>
35Yale School of the Environment. (n.d.). Soy Agriculture. Retrieved from Global Forest Atlas: <https://globalforestatlas.yale.edu/land-use/industrial-agriculture/soy-agriculture>
Trees on Earth are 8 times more than previously thought
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New data show there are eight times as many trees on the planet as previously claimed
There are about three trillion trees on the planet, according to Yale scientists. This data, collected using satellite imagery and forestry data, is eight times higher than previous figures, when it was reported that there were about 400 billion trees growing on Earth.
Calculations were made on more than 400 thousand plots on all continents.
According to research team leader Dr. Thomas Crowther, there are now about 420 trees for every inhabitant of the Earth.
As noted in a report published in the journal Nature, these studies will help to elucidate other important factors in the life of the planet - from the biological diversity of the animal world, to the modeling of climate change, which are significantly affected by the absence or presence of large forests, absorbing greenhouse gases in huge quantities. gases, converting them into oxygen.
In an interview with the BBC, Dr. Crowther, however, notes that the data from this study does not indicate that the state of the planet, the atmosphere, the level of carbon dioxide turned out to be "good" or "bad", it's just that , what is the current state of these forest areas.
"We simply described the state of the planet's forest system, so that the data could then be used, for example, by environmentalists for their research, or politicians and governments for their own purposes," says Dr. Crowther.
According to scientists, the largest number of trees - about two trillion - grow in the tropical and subtropical zones of the planet, which is quite natural.
Image copyright, ReutersPhoto caption,
Researchers believe the data will help understand the causes of climate change on the planet and how threatening the consequences are
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In addition, this study provides a clear picture of human impact on vegetation on earth. According to the data received, about 15 billion trees (or 0.5% of the total) are cut down on the planet every year, while no more than five billion are planted.
"Now we can see how fast the planet is being deforested. Combined with other data, like climate change, we can understand how deforestation affects the climate," says researcher Dr. Henry Glick.
This study also allows us to compare the current state of forests with what it was, for example, after the end of the Ice Age. Scientists say that since then, humanity has cut down almost three trillion trees on the planet.
"Europe was almost completely covered with forest, and now it is almost continuous fields and meadows. And it is, of course, human activity that has led to such results," says Dr. Crowther in an interview.
At the same time, other scientists doubt the accuracy of this study. Dr. Martin Lucas of the University of Reading in England says that the inaccuracies of recent studies, when they counted only 400 billion trees on Earth, suggest that this study, which increased the number of trees by eight times, may eventually turn out to be inaccurate.
Other scholars also point out that this study was meticulously carried out only in Europe and North America, and regions such as India, Australia, China and the Congo were practically not studied. Therefore, the following data can again increase the number of trees by two, or maybe 10 times.
Ecologists: Russia is in first place in terms of the number of trees on Earth
Ecologists: Russia is in first place in terms of the number of trees on Earth
Ecologists: Russia ranks first in the number of trees on Earth - RIA Novosti, 02.03.2020
Ecologists: Russia ranks first in the number of trees on Earth
The surface of our planet contains about three trillion trees, and Russia is about 20% of them, which is an absolute record and almost twice as many as Canada, which ranks second.
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MOSCOW, 2 September - RIA Novosti. The surface of our planet contains about three trillion trees, and Russia contains approximately 640 billion of them, which is an absolute record and almost twice as many as Canada, which ranks second, ecologists write in an article published in the journal Nature.
"Trees store a huge amount of carbon, they are critical for maintaining the nutrient cycle in nature, provide us with clean water and air, and countless other things. But when you ask someone to estimate, even to an accuracy of order how many trees there are on Earth, then almost any of us will find it difficult to answer. I myself was surprised that we are talking about a number of the order of trillions, "said Thomas Crowther from Yale University (USA).
Crowther and his colleagues quite accurately calculated the number of trees on the modern Earth, and also found out that their number on the surface of our planet has decreased by about 46% since the appearance of the first centers of civilization, by analyzing satellite images and forestry data using a supercomputer.
The idea to count all the trees on the planet came to Crowther and his colleagues after they were approached by representatives of the Plant for the Planet initiative, in which schoolchildren - supported by the UN - are trying to stop global warming by planting trees.
The activists wanted to know how much they managed to replenish the number of Earth's trees, and scientists decided to help them find the answer to this question. To do this, Crowther's group combined the results of calculations carried out in over 500 thousand corners of the Earth, as well as a large number of satellite images of forest areas.
As it turned out, the number of trees on the planet was much higher than what scientists expected to see - rough estimates based only on satellite data indicated that there should be about 400 billion trees on Earth. In fact, their number exceeds three trillion, with about half of them concentrated in the top ten countries.
The undisputed leader of this rating is Russia - about 640 billion trees grow on the territory of our country alone, most of which are located in the forests of Siberia and the Far East. It is followed by Canada and Brazil, each with about 300 billion trees. In addition to them, the top ten includes the USA, China, Congo, Indonesia, Australia, Bolivia and Mexico.
The poorest country in terms of tree cover is the Arab state of Bahrain, on whose territory only about 3 thousand trees grow. He is accompanied by Qatar, Monaco, the Cocos Islands, Gibraltar and the uninhabited Paracel Islands, whose territory is disputed by a number of Asian states.
Scientists, in addition to counting the number of trees themselves, also managed to calculate how fast their population is declining as a result of deforestation, climate change and other processes. Every year, according to the calculations of Crowther and his colleagues, about 15 billion trees disappear from the face of the planet.
"Over the course of our existence, we have already managed to destroy about half of the trees, and we have already seen how this has affected the climate and human health. Such a rapid rate of deforestation demonstrates how much effort we still have to make in order to restore forests around the world," concludes Crowther.