
Reforestation is the practice of restoring previously existing
forest
A forest is an ecosystem characterized by a dense ecological community, community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, ...
s and
woodland
A woodland () is, in the broad sense, land covered with woody plants (trees and shrubs), or in a narrow sense, synonymous with wood (or in the U.S., the '' plurale tantum'' woods), a low-density forest forming open habitats with plenty of sunli ...
s that have been destroyed or damaged. The prior forest destruction might have happened through
deforestation
Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. Ab ...
,
clearcutting
Clearcutting, clearfelling or clearcut logging is a forestry/logging practice in which most or all trees in an area are uniformly cut down. Along with Shelterwood cutting, shelterwood and Seed tree, seed tree harvests, it is used by foresters t ...
or
wildfire
A wildfire, forest fire, or a bushfire is an unplanned and uncontrolled fire in an area of Combustibility and flammability, combustible vegetation. Depending on the type of vegetation present, a wildfire may be more specifically identified as a ...
s. Three important purposes of reforestation programs are for
harvesting of wood, for
climate change mitigation
Climate change mitigation (or decarbonisation) is action to limit the greenhouse gases in the atmosphere that cause climate change. Climate change mitigation actions include energy conservation, conserving energy and Fossil fuel phase-out, repl ...
, and for
ecosystem
An ecosystem (or ecological system) is a system formed by Organism, organisms in interaction with their Biophysical environment, environment. The Biotic material, biotic and abiotic components are linked together through nutrient cycles and en ...
and
habitat
In ecology, habitat refers to the array of resources, biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species' habitat can be seen as the physical manifestation of its ...
restoration purposes. One method of reforestation is to establish
tree plantations, also called plantation forests. They cover about 131 million ha worldwide, which is 3% of the global forest area and 45% of the total area of planted forests.
Globally, planted forests increased from 4.1% to 7.0% of the total forest area between 1990 and 2015.
Plantation forests made up 280 million ha (
hectare
The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), that is, square metres (), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. ...
) in 2015, an increase of about 40 million ha in the previous ten years.
Of the planted forests worldwide, 18% of that area consists of exotic or introduced species while the rest consist of species native to the country where they are planted.
There are limitations and challenges with reforestation projects, especially if they are in the form of tree plantations. Firstly, there can be competition with other land uses and displacement risk. Secondly, tree plantations are often
monoculture
In agriculture, monoculture is the practice of growing one crop species in a field at a time. Monocultures increase ease and efficiency in planting, managing, and harvesting crops short-term, often with the help of machinery. However, monocultur ...
s which comes with a set of disadvantages, for example
biodiversity loss
Biodiversity loss happens when plant or animal species disappear completely from Earth (extinction) or when there is a decrease or disappearance of species in a specific area. Biodiversity loss means that there is a reduction in Biodiversity, b ...
. Lastly, there is also the problem that
stored carbon is released at some point.
The effects of reforestation will be farther in the future than those of
proforestation (the conservation of intact forests).
Instead of planting entirely new areas, it might be better to reconnect forested areas and restore the edges of forest. This protects their mature core and makes them more resilient and longer-lasting.
It takes much longer − several decades − for the
carbon sequestration benefits of reforestation to become similar to those from mature trees in
tropical forest
Tropical forests are forested ecoregions with tropical climates – that is, land areas approximately bounded by the Tropic of Cancer, tropics of Cancer and Tropic of Capricorn, Capricorn, but possibly affected by other factors such as prevailing ...
s. Therefore, reducing deforestation is usually more beneficial for climate change mitigation than is reforestation.
Many countries carry out reforestation programs. For example, in China, the ''Three Northern Protected Forest Development Program'' – informally known as the "
Great Green Wall" – was launched in 1978 and scheduled to last until 2050. It aims to eventually plant nearly 90 million acres of new forest in a 2,800-mile stretch of northern China.
Such programs often blur the boundaries between ''reforestation'' and ''
afforestation'' (the latter being the establishment of a forest in an area where there was no forest before).
Definition
Reforestation according to the
IPCC
The Intergovernmental Panel on Climate Change (IPCC) is an intergovernmental body of the United Nations. Its job is to "provide governments at all levels with scientific information that they can use to develop climate policies". The World M ...
means the "conversion to forest of land that has previously contained forests but that has been converted to some other use".
According to
FAO
The Food and Agriculture Organization of the United Nations; . (FAO) is a List of specialized agencies of the United Nations, specialized agency of the United Nations that leads international efforts to defeat hunger and improve nutrition ...
terminology, reforestation is defined as the re-establishment of forest through planting and/or deliberate seeding on land classified as forest.
''
Afforestation'' on the other hand means establishing new forest on lands that were not forest before (for example, abandoned agriculture). It is the process of restoring and recreating areas of
woodland
A woodland () is, in the broad sense, land covered with woody plants (trees and shrubs), or in a narrow sense, synonymous with wood (or in the U.S., the '' plurale tantum'' woods), a low-density forest forming open habitats with plenty of sunli ...
s or
forest
A forest is an ecosystem characterized by a dense ecological community, community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, ...
s that may have existed long ago but were
deforested or otherwise removed at some point in the past or lacked it naturally (for example, natural
grassland
A grassland is an area where the vegetation is dominance (ecology), dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes such as clover, and other Herbaceo ...
s).
Purposes
Harvesting of wood
Reforestation is not only used for recovery of accidentally destroyed forests. In some countries, such as
Finland
Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, ...
, many of the forests are ''managed'' by the wood products and
pulp and paper industry. In such an arrangement, like other crops, trees are planted to replace those that have been cut. The Finnish Forest Act from 1996 obliges the forest to be replanted after
felling. In such circumstances, the industry can cut the trees in a way to allow easier reforestation.
Reforestation, if several
indigenous species are used, can provide other benefits in addition to financial returns, including
restoration of the soil, rejuvenation of local flora and fauna, and the capturing and sequestering of 38
tons of
carbon dioxide
Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at norma ...
per
hectare
The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), that is, square metres (), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. ...
per year.
Climate change mitigation
There are four primary ways in which reforestation and reducing
deforestation
Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. Ab ...
can increase
carbon sequestration and thus help with climate change mitigation. First, by increasing the volume of existing forest. Second, by increasing the carbon density of existing forests at a stand and landscape scale. Third, by expanding the use of forest products that will sustainably replace fossil-fuel emissions. Fourth, by reducing carbon emissions that are caused from deforestation and degradation.
Ecosystem restoration

Plantation forests are intensively managed, composed of one or two species, even-aged, planted with regular spacing, and established mainly for productive purposes. Other planted forests, which comprise 55 percent of all planted forests, are not intensively managed, and they may resemble natural forests at stand maturity. The purposes of other planted forests may include
ecosystem restoration and the protection of soil and water values.
Methods
Forest plantations
Plantation forests cover about 131 million ha, which is 3 percent of the global forest area and 45 percent of the total area of planted forests.
Over 90% of the world's forests regenerate organically, and more than half are covered by forest management plans or equivalents.

Globally, planted forests increased from 4.1% to 7.0% of the total forest area between 1990 and 2015.
Plantation forests made up 280 million ha (
hectare
The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), that is, square metres (), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. ...
) in 2015, an increase of about 40 million ha in the previous ten years.
Of the planted forests worldwide, 18% of that planted area consists of exotic or introduced species while the rest consist of species native to the country where they are planted.
Using existing trees and roots
Planting new trees often leads to up to 90% of seedlings failing. However, even in deforested areas, existing root systems often exist. Growth can be accelerated by
pruning and
coppicing
Coppicing is the traditional method in woodland management of cutting down a tree to a tree stump, stump, which in many species encourages new Shoot (botany), shoots to grow from the stump or roots, thus ultimately regrowing the tree. A forest ...
where a few branches of new shoots are cut and often used for charcoal, itself a major driver of deforestation. Since new seeds are not planted, it is cheaper. Additionally, they are much more likely to survive as their root systems already exist and can tap into groundwater during harsher seasons with no rain. While this method has existed for centuries, it is now sometimes referred to as
farmer-managed natural regeneration or
assisted natural regeneration.
Financial incentives
Policies that promote reforestation for incentives in return have shown promising results of being an effective and motivative concept to re-plant globally on a mass scale.
Some incentives for reforestation can be as simple as a financial compensation. A compensated reduction of deforestation approach has been proposed which would reward developing countries that disrupt any further act of deforestation: Countries that participate and take the option to reduce their emissions from deforestation during a committed period of time would receive financial compensation for the carbon dioxide emissions that they avoided.
To raise the payments, the host country would issue government bonds or negotiate some kind of loan with a financial institution that would want to take part in the compensation promised to the other country. The funds received by the country could be invested to help find alternatives to the extensive cutdown of forests. This whole process of cutting emissions would be voluntary, but once the country has agreed to lower their emissions they would be obligated to reduce their emissions. However, if a country was not able to meet their obligation, their target would get added to their next commitment period. The authors of these proposals see this as a solely government-to-government agreement; private entities would not participate in the compensation trades.
Another emerging revenue source to fund reforestation projects deals with the sale of carbon sequestration credits, which can be sold to companies and individuals looking to compensate their carbon footprint. This approach allows for private landowners and farmers to gain a revenue from the reforestation of their lands, while simultaneously benefiting from improved soil health and increased productivity.
Alongside past financial incentive strategies, reforestation tax benefits have been another way the government has encouraged companies to promote reforestation tactics through the promises of a tax break.
As many landholders seek to earn carbon credits through sequestration, their participation also encourages biodiversity and provides
ecosystem services for crops and livestock.
Challenges
There is often insufficient integration between the different purposes of reforestation, namely economic utilization, enhancement of biodiversity and carbon sequestration. This can lead to a range of different challenges.
Competition with other land uses and displacement risk
Reforestation can compete with other land uses, such as food production, livestock grazing, and living space, for further economic growth.
Reforestation can also divert large amounts of water from other activities. A map created by the
World Resources Institute
The World Resources Institute (WRI) is a global research non-profit organization established in 1982 with funding from the MacArthur Foundation under the leadership of James Gustave Speth. Subsequent presidents include Jonathan Lash (1993– ...
in collaboration with the
IUCN
The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status ...
identifies 2 billion hectares for potential forest restoration and is criticized for including 900 million hectares of grasslands. An assessment of the pledges of governments for reforestation found that the sum of global pledges translates to a required land area of 1.2bn hectares, until 2060, which is equal to a tenth of the global land area und thus deemed unrealistic without a significant encroachment on non-forest areas.
Experts are calling for a better integration of social data, such as the dependence of livelihoods on specific land uses, into restoration efforts. Possible solutions include the integration of other land uses into forests through
agroforestry, such as growing coffee plants under trees, reducing the delineation between forests and other land uses.
A study found that almost 300 million people live on tropical forest restoration opportunity land in the
Global South
Global North and Global South are terms that denote a method of grouping countries based on their defining characteristics with regard to socioeconomics and politics. According to UN Trade and Development (UNCTAD), the Global South broadly com ...
, constituting a large share of low-income countries' populations, and argues for prioritized inclusion of "local communities" in forest restoration projects.
There are calls for a more selective approach to identifying reforestation areas, taking into account the possible displacement of customary land uses.
Biodiversity loss
Reforesting sometimes results in extensive canopy creation that prevents growth of diverse vegetation in the shadowed areas and generating soil conditions that hamper other types of vegetation. Trees used in some reforesting efforts (for example, ''
Eucalyptus globulus
''Eucalyptus globulus'', commonly known as southern blue gum or blue gum, is a species of flowering plant in the family Myrtaceae. It is a tall, evergreen tree Endemism, endemic to southeastern Australia. This ''Eucalyptus'' species has most ...
'') tend to extract large amounts of moisture from the soil, preventing the growth of other plants. The
European Commission
The European Commission (EC) is the primary Executive (government), executive arm of the European Union (EU). It operates as a cabinet government, with a number of European Commissioner, members of the Commission (directorial system, informall ...
found that, in terms of environmental services, it is better to avoid
deforestation
Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. Ab ...
than to allow for deforestation to subsequently reforest, as the former leads to irreversible effects in terms of
biodiversity loss
Biodiversity loss happens when plant or animal species disappear completely from Earth (extinction) or when there is a decrease or disappearance of species in a specific area. Biodiversity loss means that there is a reduction in Biodiversity, b ...
and
soil degradation
Soil retrogression and degradation are two regressive evolution processes associated with the loss of equilibrium of a soil health, stable soil. Retrogression is primarily due to soil erosion and corresponds to a phenomenon where succession revert ...
.
The effects reforestation has on biodiversity is not limited to just other forms of vegetation, it can affect all forms of living organisms all contained in the present ecosystem. Due to the major role trees have on ecosystems it is important to better understand components like the ecosystem, waterways, and species present in areas that are being re-planted. Prior research helps limit the depletion of biodiversity which can hinder medicinal discoveries, and alter gene flow in organisms.
A debated issue in managed reforestation is whether the succeeding forest will have the same
biodiversity
Biodiversity is the variability of life, life on Earth. It can be measured on various levels. There is for example genetic variability, species diversity, ecosystem diversity and Phylogenetics, phylogenetic diversity. Diversity is not distribut ...
as the original forest. If the forest is replaced with only one species of tree and all other vegetation is prevented from growing back, a
monoculture
In agriculture, monoculture is the practice of growing one crop species in a field at a time. Monocultures increase ease and efficiency in planting, managing, and harvesting crops short-term, often with the help of machinery. However, monocultur ...
forest similar to agricultural crops would be the result. However, most reforestation involves the planting of different selections of seedlings taken from the area, often of multiple species.
Stored carbon being released
There is also the risk that, through a
forest fire
A wildfire, forest fire, or a bushfire is an unplanned and uncontrolled fire in an area of combustible vegetation. Depending on the type of vegetation present, a wildfire may be more specifically identified as a bushfire ( in Australia), dese ...
or
insect outbreak, much of the stored carbon in a reforested area could make its way back to the atmosphere.
Furthermore, the probability that legacy carbon will be released from soil is higher in younger boreal forests. An example of this can be seen in the peatlands in Central Africa, which house an abundance of carbon in the mud called peat. Much like the forest fire or insect outbreak which can harm tropical rainforests, money can also be seen an incentive to harm forests and be paid off to protect it. The global greenhouse gas emissions caused by damage to tropical rainforests may be underestimated by a factor of six.
Also the possible harvesting and utilization of wood from reforested areas, limits the permanence of carbon sequestered through reforestation. For example, it was found that nearly half of the pledges under the
Bonn Challenge were areas earmarked for commercial wood use.
Additionally the effects of afforestation and reforestation will be farther in the future than those of proforestation (the conservation of intact forests).
It takes much longer − several decades − for the benefits for global warming to manifest to the same
carbon sequestration benefits from mature trees in tropical forests and hence from limiting deforestation.
Some researchers note that instead of planting entirely new areas, reconnecting forested areas and restoring the edges of forest, to protect their mature core and make them more resilient and longer-lasting, should be prioritized.
Implementation challenges
There are some implementation challenges
* Seed shortage: the Seed to Forest Alliance was founded in 2022 in response to a global seed shortage. It will promote the establishment of national seed banks, while focusing on the tropics and biodiversity hotspots.
* Seedling survival rate: a common challenge for reforestation is the low survival rate of seedlings. Planted trees often do not mature, for example due to difficult climatic conditions or insufficient care after planting.
By country
Asia
China
According to China's government, the forest coverage of the country grew from 10% of the overall territory in 1949 to 25% in 2024.
China has introduced the
Green Wall of China project, which aims to halt the expansion of the
Gobi desert through the planting of trees. There has been a 47-million-hectare increase in forest area in China since the 1970s.
[James Owen]
"World's Forests Rebounding, Study Suggests"
''National Geographic News'', 13 November 2006. The total number of trees amounted to be about 35 billion and 4.55% of China's land mass increased in forest coverage. The forest coverage was 12% in the early 1980s and had reached 16.55% by 2001.
[Gittings, John (20 March 2001)]
"Battling China's Deforestation".
''The Guardian''.
China announced two large reforestation programs, the Natural Forest Protection Program and the Returning Farmland to Forest program, in late 1998.
The programs were piloted in
Sichuan
Sichuan is a province in Southwestern China, occupying the Sichuan Basin and Tibetan Plateau—between the Jinsha River to the west, the Daba Mountains to the north, and the Yunnan–Guizhou Plateau to the south. Its capital city is Cheng ...
,
Shaanxi
Shaanxi is a Provinces of China, province in north Northwestern China. It borders the province-level divisions of Inner Mongolia to the north; Shanxi and Henan to the east; Hubei, Chongqing, and Sichuan to the south; and Gansu and Ningxia to t ...
, and
Gansu
Gansu is a provinces of China, province in Northwestern China. Its capital and largest city is Lanzhou, in the southeastern part of the province. The seventh-largest administrative district by area at , Gansu lies between the Tibetan Plateau, Ti ...
in 1999.
They became widely implemented in 2000.
The Natural Forest Protection Program called for major reductions in timber harvest, forest conservation, and instituted logging bans in most of Sichuan,
Yunnan
Yunnan; is an inland Provinces of China, province in Southwestern China. The province spans approximately and has a population of 47.2 million (as of 2020). The capital of the province is Kunming. The province borders the Chinese provinces ...
,
Guizhou
)
, image_skyline =
, image_caption =
, image_map = Guizhou in China (+all claims hatched).svg
, mapsize = 275px
, map_alt = Map showing the location of Guizhou Province
, map_caption = Map s ...
, and
Tibet
Tibet (; ''Böd''; ), or Greater Tibet, is a region in the western part of East Asia, covering much of the Tibetan Plateau and spanning about . It is the homeland of the Tibetan people. Also resident on the plateau are other ethnic groups s ...
.
The program provided for alternative employment opportunities for former logging industry workers, including hiring them for reforestation work.
The Returning Farmland to Forest program paid farmers to plant trees on less productive farmland and provided them with a yearly subsidy for lost income.
In 2015 China announced a plan to plant 26 billion trees by the year 2025; that is, two trees for every Chinese citizen per year.
Between 2013 and 2018, China planted 338,000 square kilometres of forests, at a cost of $82.88 billion. By 2018, 21.7% of China's territory was covered by forests, a figure the government wants to increase to 26% by 2035. The total area of China is 9,596,961 square kilometres (see
China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
), so 412,669 square kilometres more needs to be planted. According to the government's plan, by 2050, 30% of China's territory should be covered by forests.
In 2017, the
Saihanba Afforestation Community won the UN
Champions of the Earth Award in the Inspiration and Action category for their successful reforestation efforts, which began upon discovering the survival of a single tree.
From 2016 to 2021, 3976 square kilometers of forests were planted in the
Tibet Autonomous Region
The Tibet Autonomous Region (TAR), often shortened to Tibet in English or Xizang in Pinyin, Hanyu Pinyin, is an Autonomous regions of China, autonomous region of the China, People's Republic of China. It was established in 1965 to replace the ...
, with plans for 20 million trees to be planted before 2023.
In the years 2012–2022 China restored more than of forests. China committed to plant and conserve 70 billion trees by the year 2030 as part of the
Trillion Tree Campaign.
The
Jane Goodall Institute launched the Million Tree Project in Kulun Qi,
Inner Mongolia
Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an Autonomous regions of China, autonomous region of China. Its border includes two-thirds of the length of China's China–Mongolia border, border with the country of Mongolia. ...
to plant one million trees.
China used 24 million hectares of new forest to offset 21% of Chinese fossil fuel emissions in 2000.
The Chinese government requires
mining companies to restore the environment around exhausted mines by refilling excavated pits and planting crops or trees.
Many mining companies use these recovered mines for
ecotourism
Ecotourism is a form of nature-oriented tourism intended to contribute to the Ecological conservation, conservation of the natural environment, generally defined as being minimally impactful, and including providing both contributions to conserv ...
business.
Launched in 1978 and scheduled to last until 2050, the Three Northern Protected Forest Development Program – informally known as the "
Great Green Wall" – aims to eventually plant nearly 90 million acres of new forest in a 2,800-mile stretch of northern China.
Over 69.3 million hectares of forest were planted across China from 1999 to 2013. This large-scale reforestation contributed to China’s forests sequestering 1.11 ± 0.38 Gt carbon per yr over the period 2010 to 2016. This amounted to about 45 percent of the yearly greenhouse gas emissions during that period in China.
India
Jadav Payeng had received national awards for reforestation efforts, known as the "
Molai forest". He planted 1400 hectares of forest on the bank of river
Brahmaputra alone. There are active reforestation efforts throughout the country. In 2016, India had more than 50 million trees planted in
Uttar Pradesh
Uttar Pradesh ( ; UP) is a States and union territories of India, state in North India, northern India. With over 241 million inhabitants, it is the List of states and union territories of India by population, most populated state in In ...
and in 2017, more than 66 million trees planted in
Madhya Pradesh
Madhya Pradesh (; ; ) is a state in central India. Its capital is Bhopal and the largest city is Indore, Indore. Other major cities includes Gwalior, Jabalpur, and Sagar, Madhya Pradesh, Sagar. Madhya Pradesh is the List of states and union te ...
. In addition to this and individual efforts, there are startup companies, such as Afforest, that are being created over the country working on reforestation.
Lots of plantation are being carried out in the Indian continent but the survivability is very poor especially for massive plantations, with less than 20% survivability rate. To improve the forest cover and to achieve the national mission of forest cover of 33%, there is a need to improve the methods of plantation. Rather than mass planting, there is a need to work on performance measurement & tracking of trees growth. Taking this into consideration, a non-profit organizatio
Ek Kadam Sansthanin
Jaipur
Jaipur (; , ) is the List of state and union territory capitals in India, capital and the List of cities and towns in Rajasthan, largest city of the north-western States and union territories of India, Indian state of Rajasthan. , the city had ...
is leading the development of a module of mass tracking for plantations. The pilot has been done successfully and the organization is hoping to implement nationwide by the end of 2021.
Japan
The Ministry of Agriculture, Forestry and Fishery explain that about two-thirds of Japanese land is covered with forests, and it was almost unchanged from 1966 to 2012. Japan needs to reduce 26% of green house gas emission from 2013 by 2030 to accomplish Paris Agreement and is trying to reduce 2% of them by forestry.
Mass environmental and human-body pollution along with relating deforestation, water pollution, smoke damage, and loss of soils caused by
mining operations in Ashio, Tochigi became the first environmental social issue in Japan, efforts by
Shōzō Tanaka had grown to large campaigns against copper operation. This led to the creation of '
Watarase Yusuichi Pond', to settle the pollution which is a
Ramsar site today. Reforestation was conducted as a part of
afforestation due to inabilities of self-recovering by the natural land itself due to serious
soil pollution and loss of woods consequence in loss of soils for plants to grow, thus needing artificial efforts involving introducing of healthy soils from outside. Starting from around 1897, about 50% of once bald mountains are now back to green.
Pakistan
The
Billion Tree Tsunami was launched in 2014 by planting 10 billion trees, by the provincial
government of Khyber Pakhtunkhwa (KPK) and
Imran Khan, as a response to the challenge of global warming. Pakistan's Billion Tree Tsunami restored 350,000 hectares of forests and degraded land to surpass its
Bonn Challenge commitment.
In 2018,
Pakistan's prime minister Imran Khan declared that the country will plant
10 billion trees in the next five years.
In 2020, the Pakistani government launched an initiative to hire 63,600 laborers to plant trees in the northern Punjab region, with indigenous species such as
acacia
''Acacia'', commonly known as wattles or acacias, is a genus of about of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa, South America, and Austral ...
,
mulberry
''Morus'', a genus of flowering plants in the family Moraceae, consists of 19 species of deciduous trees commonly known as mulberries, growing wild and under cultivation in many temperate world regions. Generally, the genus has 64 subordinat ...
and
moringa. This initiative was meant to alleviate unemployment caused by
lockdowns to mitigate the spread of
COVID-19
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic.
The symptoms of COVID‑19 can vary but often include fever ...
.
Philippines
In 2011, the Philippines established the National Greening Program as a priority program to help reduce poverty, promote food security, environmental stability, and biodiversity conservation, as well as enhance climate change mitigation and adaptation in the country. The program paved the way for the planting of almost 1.4 billion seedlings in about 1.66 million hectares nationwide during the 2011–2016 period. The
Food and Agriculture Organization
The Food and Agriculture Organization of the United Nations; . (FAO) is a specialized agency of the United Nations that leads international efforts to defeat hunger and improve nutrition and food security. Its Latin motto, , translates ...
of the
United Nations
The United Nations (UN) is the Earth, global intergovernmental organization established by the signing of the Charter of the United Nations, UN Charter on 26 June 1945 with the stated purpose of maintaining international peace and internationa ...
ranked the Philippines fifth among countries reporting the greatest annual forest area gain, which reached 240,000 hectares during the 2010–2015 period.
Thailand
Efforts are being made in
Thailand
Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...
to restore the land after 800,000
hectare
The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), that is, square metres (), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. ...
s of forest have been destroyed in exchange for
cash crop
A cash crop, also called profit crop, is an Agriculture, agricultural crop which is grown to sell for profit. It is typically purchased by parties separate from a farm. The term is used to differentiate a marketed crop from a staple crop ("subsi ...
land to grow
maize
Maize (; ''Zea mays''), also known as corn in North American English, is a tall stout grass that produces cereal grain. It was domesticated by indigenous peoples in southern Mexico about 9,000 years ago from wild teosinte. Native American ...
.
Agroforestry has become part of the solution to fix the damage caused by deforestation. Agroforestry would affect the agriculture and atmosphere in Thailand in numerous ways. By planting a combination of different tree species, these trees are able to change the microclimatic conditions.
Nutrient cycling
A nutrient cycle (or ecological recycling) is the movement and exchange of inorganic and organic matter back into the production of matter. Energy flow is a unidirectional and noncyclic pathway, whereas the movement of mineral nutrients is cyc ...
also occurs when trees are incorporated in the agricultural system.
It is also probable that the
soil erosion
Soil erosion is the denudation or wearing away of the Topsoil, upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, Atmosphere of Ea ...
that occurred as a result of deforestation can be mediated when these trees are planted.
Europe
Armenia
The
Armenia Tree Project was founded in 1994 to address environmental and economic concerns related to
Armenia
Armenia, officially the Republic of Armenia, is a landlocked country in the Armenian Highlands of West Asia. It is a part of the Caucasus region and is bordered by Turkey to the west, Georgia (country), Georgia to the north and Azerbaijan to ...
's dwindling forests. Since its founding, the organization has planted more than 6.5 million trees in communities throughout Armenia.
My Forest Armenia was founded in 2019 and has since planted 910,000 trees in Armenia.
Iceland
Prior to the
deforestation of Iceland in the Middle Ages, some 40% of the land was forested. Today, the country is about 2% forested, with the
Icelandic Forest Service aiming to increase that share to 10% through reforestation and natural regrowth.
Ireland
In 2019 the government of
Ireland
Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...
decided to plant 440 million trees by 2040. The decision is part of the government's plan to make
Ireland
Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...
carbon neutral by 2050 with
renewable energy
Renewable energy (also called green energy) is energy made from renewable resource, renewable natural resources that are replenished on a human lifetime, human timescale. The most widely used renewable energy types are solar energy, wind pow ...
, land use change and
carbon tax.
Ireland is also driven to increase sustainable timber consumption while also adding more eco friendly work positions. They also have taken efforts to limit the use of methane emissions by signing a pledge to draw back methane use by 30%.
Germany
By the 14th century, forests in heavily populated areas had been devastated by industry, many of which required wood for their activities.
Peter Stromer (1310–1388), lord of the Stromer trading and commercial company, was spurred by this shortage to "conduct forest culture experiments".
In 1368 he successfully sowed fir and pine seeds in the Nuremberg Reichswald, which over time ended the wood shortage and established the "triumph of the pine in the Nuremberg Reichswald" (at the expense of other deciduous trees).
The "doctrine of coniferous sowing" spread widely through forestry regulations and other writing at the time.
Reforestation is required as part of the federal forest law. 31% of Germany is forested, according to the second forest inventory of 2001–2003. The size of the forest area in Germany increased between the first and the second forest inventory due to forestation of degenerated
bog
A bog or bogland is a wetland that accumulates peat as a deposit of dead plant materials often mosses, typically sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and musk ...
s and agricultural areas.
United Kingdom
Since the 1980s, 8.5 million trees have been planted in the United Kingdom in an area of the
Midlands around the villages of
Moira and
Donisthorpe, close to Leicester. The area is called
The National Forest. An even larger reforestation project, called
The Northern Forest, is beginning in South Yorkshire. It aims to plant 50 million trees. Despite this, the UK government has been criticized for not achieving its tree planting goals. There have also been concerns of non-native tree planting disturbing the ecological integrity and processes of what would be a native habitat restoration.
Middle East
Israel
Since 1948, large reforestation and afforestation projects were accomplished in Israel. 240 million trees have been planted. The carbon sequestration rate in these forests is similar to the European temperate forests.
Israel and only one other country was documented to have a net increase of forestation in the 2000s. This type of progress could be attributed to the social practices that Israel incorporates into their society.
Lebanon
For thousands of years Lebanon was covered by forests; one particular species of interest, ''
Cedrus libani
''Cedrus libani'', commonly known as cedar of Lebanon, Lebanon cedar, or Lebanese cedar (), is a species of large evergreen conifer in the genus ''Cedrus'', which belongs to the Pinaceae, pine family and is native species, native to the mountai ...
'' was exceptionally valuable and was almost eliminated due to lumbering operations. Many ancient cultures along the Mediterranean Sea harvested these trees including the Phoenicians who used cedar, pine and juniper for boat building, the Romans, who cut them down for lime-burning kilns, and the Ottomans, who used much of the remaining cedar forests of Lebanon as fuel in steam trains in the early 20th century. Despite two millennia of deforestation, forests in Lebanon still cover 13.6% of the country, and other wooded lands represent 11%.
Law No. 558, which was ratified by the Lebanese Parliament on April 19, 1996, aims to protect and expand existing forests, classifying all forests of cedar,
fir
Firs are evergreen coniferous trees belonging to the genus ''Abies'' () in the family Pinaceae. There are approximately 48–65 extant species, found on mountains throughout much of North and Central America, Eurasia, and North Africa. The genu ...
, high juniper, evergreen cypress and other trees, whether diverse or homogeneous, whether state-owned or not as conserved forests.
Since 2011 more than 600,000 trees, including cedars and other native species, have been planted throughout Lebanon as part of the Lebanon Reforestation Initiative, which aims to restore Lebanon's native forests. Projects financed locally and by international charity are performing extensive reforestation of cedar being carried out in the Mediterranean region, particularly in Lebanon and Turkey, where over 50 million young cedars are being planted annually.
The Lebanon Reforestation Initiative has been working with tree nurseries throughout Lebanon since 2012 to grow stronger seedlings with higher survival rates.
Turkey
Of the country's 78 million hectares of land in total, the
Ministry of Agriculture and Forestry aims to increase
Turkey's forest cover to 30% by 2023.
Four thousand years ago,
Anatolia
Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...
was 60% to 70% forested.
Although the
flora of Turkey remains more biodiverse than many European countries, deforestation occurred during both prehistoric and historic times, including the
Roman and
Ottoman periods.
Since the first forest code of 1937, the official government definition of 'forest' has varied. According to the current definition, 21 million hectares are forested, an increase of about 1 million hectares over the past thirty years, but only about half is 'productive'. However, according to the United Nations
Food and Agriculture Organization
The Food and Agriculture Organization of the United Nations; . (FAO) is a specialized agency of the United Nations that leads international efforts to defeat hunger and improve nutrition and food security. Its Latin motto, , translates ...
definition of forest, about 12 million hectares was forested in 2015, about 15% of the land surface.
The amount of
greenhouse gas emissions by Turkey removed by forests is very uncertain.
[Turkish Greenhouse Gas Inventory report (2019)]
zip file
/ref>, however, a new assessment is being made with the help of satellites and new soil measurements and better information should be available by 2020. According to the World Resources Institute
The World Resources Institute (WRI) is a global research non-profit organization established in 1982 with funding from the MacArthur Foundation under the leadership of James Gustave Speth. Subsequent presidents include Jonathan Lash (1993– ...
"Atlas of Forest Landscape Restoration Opportunities", 50 million hectares are potential forest land, a similar area to the ancient Anatolian forest mentioned above. This could help limit climate change in Turkey. To help preserve the biodiversity of Turkey, more sustainable forestry has been suggested. Improved rangeland management is also needed.
National Forestation Day is on 11 November but, according to the agriculture and forestry trade union
A trade union (British English) or labor union (American English), often simply referred to as a union, is an organization of workers whose purpose is to maintain or improve the conditions of their employment, such as attaining better wages ...
, although volunteers planted a record number of trees in 2019, most had died by 2020 in part due to lack of rainfall.
North America
Canada
Natural Resources Canada (The Department of Natural Resources) states that the national forest cover was decreased by 0.34% from 1990 to 2015, and Canada has the lowest deforestation rate in the world. The forest industry is one of the main industries in Canada, which contributes about 7% of Canadian economy, and about 9% of the forests on Earth are in Canada. Therefore, Canada has many policies and laws to commit to sustainable forest management. For example, 94% of Canadian forests are public land, and the government obligates planting trees after harvesting to public forests.
United States
It is the stated goal of the United States Forest Service
The United States Forest Service (USFS) is an agency within the United States Department of Agriculture, U.S. Department of Agriculture. It administers the nation's 154 United States National Forest, national forests and 20 United States Natio ...
(USFS) to manage forest resources sustainably. This includes reforestation after timber harvest, among other programs.
United States Department of Agriculture
The United States Department of Agriculture (USDA) is an executive department of the United States federal government that aims to meet the needs of commercial farming and livestock food production, promotes agricultural trade and producti ...
(USDA) data shows that forest occupied about 46% of total U.S. land in 1630 (when European settlers began to arrive in large numbers), but had decreased to 34% by 1910. After 1910, forest area has remained almost constant although the U.S. population has increased substantially. In the late 19th century, the USFS was established in part to address the concern of natural disasters due to deforestation, and new reforestation programs and federal laws such as the Knutson-Vandenberg Act (1930) were implemented. The USFS states that human-directed reforestation is required to support natural regeneration and the agency engages in ongoing research into effective ways to restore forests.
As for the year 2020, the U.S. planted 2.5 billion trees per year. At the beginning of the year 2020, a bill that will increase the number to 3.3 billion, was proposed by the Republican Party, after President Donald Trump
Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party (United States), Republican Party, he served as the 45 ...
joined the Trillion Tree Campaign.
Latin America

Bolivia
Training in reforestation for young people in Bolivia
Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...
has been provided by Oxfam Intermón.
Costa Rica
Through reforestation and environmental conservation, Costa Rica doubled its forest cover in 30 years between 1989 and 2019.
Costa Rica has a long-standing commitment to the environment. The country is now one of the leaders of sustainability
Sustainability is a social goal for people to co-exist on Earth over a long period of time. Definitions of this term are disputed and have varied with literature, context, and time. Sustainability usually has three dimensions (or pillars): env ...
, biodiversity
Biodiversity is the variability of life, life on Earth. It can be measured on various levels. There is for example genetic variability, species diversity, ecosystem diversity and Phylogenetics, phylogenetic diversity. Diversity is not distribut ...
, and other protections. It wants to be completely fossil fuel free by 2050. The country has generated all of its electric power from renewable sources for three years as of 2019. It has committed to be carbon-free and plastic-free by 2021.
As of 2019, half of the country's land surface is covered with forests. They absorb a huge amount of carbon dioxide
Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at norma ...
, combating climate change.
In the 1940s, more than 75% of the country was covered in mostly tropical rainforests and other indigenous woodlands. Between the 1940s and 1980s, extensive, uncontrolled logging
Logging is the process of cutting, processing, and moving trees to a location for transport. It may include skidder, skidding, on-site processing, and loading of trees or trunk (botany), logs onto logging truck, trucks[ecotourism
Ecotourism is a form of nature-oriented tourism intended to contribute to the Ecological conservation, conservation of the natural environment, generally defined as being minimally impactful, and including providing both contributions to conserv ...]
and conservation, Costa Rica has pioneered the development of payments for environmental services. Costa Rica's extensive system of environmental protection has been encouraging conservation and reforestation of the land by providing grants for environmental services. The system is not just advanced for its time but is also unparalleled in the world. It received great international attention.
Costa Rica doubled its forest cover in 30 years using its system of grants and other payments for environmental services, including compensation for landowners. One of the main programs established in Costa Rica was the Forest Promotion Certificate in 1979 and is funded by international donations and nationwide taxes. The initiative is helping to protect the forests in the country, and is now helped pass both the Forest Law in 1986 and FONAFIFO in 1990 which insures the continuity of the conservation programs.
Costa Rica's ambitious reforestation initiatives have transformed the landscape, fostering biodiversity, carbon sequestration, and sustainable land management practices.
Peru
Approximately 59% of Peru is covered by forest. A history of political turmoil and the government's inability to enforce environmental regulations has led to the degradation of the forest and environment in Peru. A military coup in 1968 caused a loss of economic mobility in the Talara region and sparked a boom in illegal logging due to the lack of alternative economic opportunities. Illegal mining and logging operations are responsible for a great deal of Peru's deforestation and environmental damage. The Peruvian government has not been able to enforce an environmentally conscious mining formalization plan to protect the Amazon forest in the Madre de Dios region. The 1980s were known in Peru as the "lost decade" due to a nationwide internal conflict and severe economic crisis almost destroying the country and resulting in the state losing control over several regions. Many areas in Peru, including Madre de Dios, had no state presence until the government initiated a movement to 'conquer and populate the Amazon,' with the hopes of minimizing illegal and informal mining operations that had expanded in the region and were polluting the Amazonian rivers and the destroying of its forests.
Reforestation initiatives have expanded in the country since. In Peru, reforestation is essential to preserving the livelihoods of rural communities because much of the population relies on the forest in some way. Deforestation also disproportionally affects indigenous communities in Peru, which is why reforestation efforts are essential for the protection of many communities' livelihoods.
Sub-Saharan Africa
One plan in this region, called Great Green Wall (Africa), involves planting a nine-mile width of trees on the Southern Border of the Sahara Desert
The Sahara (, ) is a desert spanning across North Africa. With an area of , it is the largest hot desert in the world and the list of deserts by area, third-largest desert overall, smaller only than the deserts of Antarctica and the northern Ar ...
for stopping its expansion to the south. However, this is more of an afforestation project than a reforestation one.
In 2019, Ethiopia
Ethiopia, officially the Federal Democratic Republic of Ethiopia, is a landlocked country located in the Horn of Africa region of East Africa. It shares borders with Eritrea to the north, Djibouti to the northeast, Somalia to the east, Ken ...
begun a massive tree planting campaign "Green Legacy" with a target to plant 4 billion trees in one year. In one day only, over 350 million trees were planted.
Nigeria
Organizations and programs
* Ecosia
Ecosia (derived from "Ecology, eco" and "utopia") is a non-profit tech organisation based in Berlin, Germany. It runs its namesake internet search engine, which launched on 7 December 2009 to coincide with 2009 United Nations Climate Change Con ...
is a non-profit organization based in Berlin, Germany, that has planted over 100 million trees worldwide as of July 2020.
* Trees for the Future has assisted more than 170,000 families, in 6,800 villages of Asia, Africa and the Americas, to plant over 35 million trees.
* Ecologi is an organization that offers its members ways to support climate change solutions. This includes offsetting their carbon emissions and tree planting. So far over 50 million trees have been planted through Ecologi, as well a more than 2.2 million tonnes of CO2e reduced.
* Wangari Maathai, 2004 Nobel Peace Prize
The Nobel Peace Prize (Swedish language, Swedish and ) is one of the five Nobel Prizes established by the Will and testament, will of Sweden, Swedish industrialist, inventor, and armaments manufacturer Alfred Nobel, along with the prizes in Nobe ...
recipient, founded the Green Belt Movement which planted over 47 million trees to restore the Kenyan environment.
* Team Trees was a 2019 fundraiser with an initiative to plant 20 million trees. The initiative was started by American YouTuber
A YouTuber is a content creator and social media influencer who uploads or creates videos on the online video-sharing website YouTube, typically posting to their personal YouTube channel. The term was first used in the English language in 2006 ...
s MrBeast and Mark Rober, and was mostly supported by YouTubers. The Arbor Day Foundation will work with its local partners around the world to plant one tree for each dollar they raise.
* Trees For Life ( Brooklyn Park) is a state based organization, which was established back in 1981 and delivers conservation, revegetation and community training programs. It now has thousands of active supporters and energizes activity within communities.
* Many companies are trying to achieve carbon offsets by nature-based solutions like reforestation, including mangrove forests and soil restoration. Among them are Microsoft
Microsoft Corporation is an American multinational corporation and technology company, technology conglomerate headquartered in Redmond, Washington. Founded in 1975, the company became influential in the History of personal computers#The ear ...
and Eni
Eni is an Italian oil and gas corporation.
Eni or ENI may refer to:
Businesses and organisations
* Escuela Nacional de Inteligencia, the Argentine intelligence academy
* Groupe des écoles nationales d’ingénieurs (Groupe ENI), a French engi ...
. Increasing the forest cover of Earth by 25% will offset the human emissions in the last 20 years. In any case it will be necessary to pull from the atmosphere the that already have been emitted. However, this can work only if the companies will stop new emissions and stop deforestation.
* The 2020 World Economic Forum
The World Economic Forum (WEF) is an international non-governmental organization, international advocacy non-governmental organization and think tank, based in Cologny, Canton of Geneva, Switzerland. It was founded on 24 January 1971 by German ...
, held in Davos, announced the creation of the Trillion Tree Campaign, which is an initiative aiming to plant 1 trillion trees across the globe. The implementation can have big environmental and societal benefits but needs to be tailored to local conditions.
* The forest landscape restoration strategy seeks to rehabilitate landscapes and repair marginal and degraded areas in order to generate productive forest landscapes that are resilient and long-term. It aims to guarantee that diverse ecological and land-use functions are restored, safeguarded, and preserved over time.
See also
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References
{{Authority control
*Reforest
Forest management
Habitat
Emissions reduction
Carbon dioxide removal