Yes. Also, some regions of land that are currently usable will become less usable. I think some analyses/forecasts of this also talk about the "quality" of the

Yes. Also, some regions of land that are currently usable will become less usable. I think some analyses/forecasts of this also talk about the "quality" of the land involved for agriculture (it's more than just a binary usable / not usable distinction). There's a book discussing the business opportunities being created by global warming - "windfall" by McKenzie Funk.