Write a story about a newly discovered planet that is covered in vast forests and populated by sentient tree beings

Write a story about a newly discovered planet that is covered in vast forests and populated by sentient tree beings. The protagonist, a scientist, must communicate with the tree beings in order to learn about their civilization and their connection to the planet’s ecosystem. As the story unfolds, the scientist uncovers a hidden danger threatening both the tree beings and the planet itself, and must find a way to save them before it’s too late.