In general, vegetation types are projected to be moving into their 'neighbouring' climates, depending on whether temperature or precipitation is expected to be the predominant factor and how vegetation interacts with the increasing CO2 levels in the atmosphere . For instance, boreal or temperate forest vegetation is simulated to migrate polewards, closed tropical  forest is expected to transition towards dry tropical forest types, while climate-driven degradation might expand arid vegetation cover . However, 'novel ecosystems', that is, communities with no current or historical equivalent because of the novel combinations of abiotic conditions under climate change, are expected to be increasingly common in the future , although the regions where these novel ecosystems might emerge are still disputed . The possibility of these novel ecosystems and the communities that live within them are a challenge for current modelling of ecosystem shifts, and new approaches to conservation will be required that are designed to adapt to rapid changes in species composition and the ensuing challenges.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report