• Almost a third of the world's tree species are at risk of extinction, according to a new report.
  • It found that 30% of tree species are at risk of going extinct, while 440 species have fewer than 50 individuals left in the wild.
  • In total, the number of threatened tree species is double the number of threatened mammals, birds, amphibians and reptiles combined.
  • The report named the top three threats facing tree species as crop production, timber logging and livestock farming.

Almost a third of the world's tree species are at risk of extinction, while hundreds are on the brink of being wiped out, according to a landmark report published by Botanic Gardens Conservation International (BGCI) on Wednesday.

According to the State of the World's Trees report 17,500 tree species - some 30% of the total - are a risk of extinction, while 440 species have fewer than 50 individuals left in the wild.

Overall the number of threatened tree species is double the number of threatened mammals, birds, amphibians and reptiles combined, the report said.

"This report is a wake up call to everyone around the world that trees need help," BGCI Secretary General Paul Smith said in a statement.

Among the most at-risk trees are species including magnolias and dipterocarps - which are commonly found in Southeast Asian rainforests. Oak trees, maple trees and ebonies also face threats, the report said.

Trees help support the natural ecosystem and are considered vital for combating global warming and climate change. The extinction of a single tree species could prompt the loss of many others.

"Every tree species matters — to the millions of other species that depend on trees, and to people all over the world," Smith added.

Thousands of varieties of trees in the world's top six countries for tree-species diversity are at risk of extinction the report found. The greatest single number is in Brazil, where 1,788 species are at risk.

The other five countries are Indonesia, Malaysia, China, Colombia and Venezuela.

The top three threats facing tree species are crop production, timber logging and livestock farming, the report said, while climate change and extreme weather are emerging threats.

am inforgraphic showing the threats tree species face
Crop production, timber logging and livestock farming are the top three threats tree species face.
Image: BGCI: State of the World’s Trees

What’s the World Economic Forum doing about deforestation?

Halting deforestation is essential to avoiding the worst effects of global climate change.

The destruction of forests creates almost as much greenhouse gas emissions as global road travel, and yet it continues at an alarming rate.

In 2012, we brought together more than 150 partners working in Latin America, West Africa, Central Africa and South-East Asia – to establish the Tropical Forest Alliance 2020: a global public-private partnership to facilitate investment in systemic change.

The Alliance, made up of businesses, governments, civil society, indigenous people, communities and international organizations, helps producers, traders and buyers of commodities often blamed for causing deforestation to achieve deforestation-free supply chains.

The Commodities and Forests Agenda 2020, summarizes the areas in which the most urgent action is needed to eliminate deforestation from global agricultural supply chains.

The Tropical Forest Alliance 2020 is gaining ground on tackling deforestation linked to the production of four commodities: palm oil, beef, soy, and pulp and paper.

Get in touch to join our mission to halt to deforestation.

At least 180 tree species are directly threatened by rising seas and severe weather, the report said, especially island species such as magnolias in the Caribbean.

Though megadiverse countries see the greatest numbers of varieties at risk of extinction, island tree species are more proportionally at risk.

"This is particularly concerning because many islands have species of trees that can be found nowhere else," the report added.

Reporting by Oliver Griffin in Bogota; Editing by Sandra Maler