I recall a conversation I had with a climate researcher some years ago in France that left me surprised. To paraphrase, they explained that forecasting a system as complex as the climate is difficult and naturally leads to many different outcomes.

One subset of those outcomes, is that conditions would arise such that plant development is accelerated, something like a junglification (my word, probably butchering it).

Here's an article related to this, that links to research: https://cordis.europa.eu/article/id/430230-accelerated-rates...