Non-native trees

Non-native trees, also known as “non-indigenous”, “alien”, “introduced”, “allochthonous” or “exotic” trees, are tree species, breeds or hybrids in the Alpine Space region whose presence there is the result of human activity by way of intentional (e.g. assisted migration) or accidental introduction.

By contrast, native trees are tree species of natural, post-glacial forest development in the Alpine Space region.