Let us not forget that this is primarily due to deforestation, whether directly (due to loss of tree cover for moisture retention) or indirectly (due to climate change).
Anyway all policy scenarios with any hope of staying below 2ºC, let alone 1.5ºC, include a lot of net reforestation. So we’ll have to turn this around, somewhere.
It seems like people are working on it in various places, especially in the Amazon:
Did you sort this out?
Did you ever find an answer to this re: reforestation projects? Could be useful to relocate termites in order to introduce the microbes to grasslands.
Projects like this are in desperate need of serious people to help them scale up. If even a small fraction of the people who see articles like this (or videos, or whatever) were to contribute some of their time and energy to the projects themselves, then the odds wouldn't be so against them, and that little bit of progress would become reforestation of entire regions. The question isn't whether it's possible for a project like this to succeed; the question is whether there are enough people willing to make it happen.
https://worldfloraonline.org/ is useful for verifying plant names and finding botanical descriptions.
This is an excellent idea, much needed and long overdue! If this takes off, then it'll be an important part of a sustainable future (along with the transportation technology to make the swaps possible, of course.)
It's not clear from looking at the site whether this is for exchanging seeds too. Seeds are much easier to transport, so it makes sense to also include listings for seeds. I recommend asking people to indicate what time year their seeds are available, as many seeds have a short viability.
Another important inclusion would be information about transporting seeds and plants long distances. That could include guides on how to prepare and pack them as well as information about seed-/plant-friendly transportation services in various parts of the world. I think that people who offer such a service (and can provide proof of it) should be allowed to make a listing for their service as well.
There's a lot of potential here! If you like these ideas, I'll gladly discuss further over DMs. :)
For transporting grafted plants in luggage (in order to get them through customs), this video explains the process of removing soil, bracing graft union, and so on.
Transporting plant material internationally
or YouTube: https://youtube.com/watch?v=cyn9gDx2seU
I remember reading a few years back that about half of the total world production of palm oil goes to "livestock" feed, but I cannot find the source now.
All systems of oppression must be dismantled, no matter how inconvenient or unpleasant that process may be.
Convert the pasture lands to syntropic food forests and native forests, and then the birds and other native animals will have a place to live again.