Forest migration is when trees and plants move from one area to another because of changes in their surrounding environment. It's kind of like when you have to move from one house to another because the old one is no longer suitable for you.
Trees and plants need specific climates and conditions to grow properly, and if those conditions change, they may need to migrate to a new area to survive. For example, if an area becomes too hot and dry, trees and plants that are adapted to wetter climates may need to move to find a suitable place to grow.
Sometimes, trees and plants can migrate on their own by producing seeds or spores that can be carried by wind or animals to a new area. Other times, humans may need to help by planting new trees or moving existing ones to a new location.
Forest migration is important because it helps trees and plants to adapt and survive in a changing environment. If they can't migrate, they may die off completely, which can have negative effects on the ecosystem and the animals that rely on them for food and shelter.