30% of tree species at risk of extinction

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

According to the State of the World's Trees report, some 17,500 tree species are at risk of extinction, while 440 species have fewer than 50 of its kind left in the wild.

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

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

Facing threats

Thousands of tree varieties 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, while climate change and extreme weather are listed as emerging threats.

At least 180 tree species are directly threatened by rising seas and severe weather, 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," said the report.

Agencies Via Xinhua