A report from the International Union for the Conservation of Nature (IUCN) said 38 percent of tree species are at risk, threatening ecosystems, plants, animals, and economies.
The report said trees in almost every country face threats from climate change, deforestation, invasive species, pests, and diseases.
The IUCN said more than 5,000 tree species on its Red List are used for timber in construction, while over 2,000 species are used for medicines, food, and fuel.
In 2021, world leaders pledged to end deforestation by 2030, but last year the world permanently lost six-point-37 million hectares of forestland.
