There is a lot happening in regard to forest protection, reforestation and aforestation, with and without aid from within countries and from other countries. It's not easy or straightforward and nowhere near enough yet. Over time, more businesses and countries will be trying to offset their carbon generation by 'buying' forests, particularly tropical rainforest - which is hugely important for its effect on atmospheric carbon and climate:
Brazil - some with government assistance and some despite no government assistance
The above is just a taste of the sort of things that are happening. (Logging for timber and palm oil production are big threats to forests in tropical nations.)
