Our future Garden Earth will need a lot of labor, investment.
I recently observed a couple dozen volunteers working on restoring some local woods (in a park). Removing rubbish, culling invasive species, restoring top soil, planting saplings, etc.
It was real work. I couldn't believe how small the targeted area was. Less than an acre.
Doing restoration, biomediation at scale would give a lot of people a lot of jobs. At this point in my life, I'd definitely do it for minimum wage and health insurance. My neighbor "retired" a few years ago, now does landscaping. He claims he's never been happier, more fit. He certainly looks it.
There was an article that went by here on HN not long ago that claimed that this is the year that humans and their livestock outweigh all other (wild) biomass. In other words, I think Garden Earth is today, eh?
And yeah, I agree with you that it's going to take a lot of work. Done well, regenerative agriculture is profitable, so that's great.
For example, regenerate forests using Miyawaki's method: https://en.wikipedia.org/wiki/Akira_Miyawaki#Method_and_cond...
> The Miyawaki method of reconstitution of "indigenous forests by indigenous trees" produces a rich, dense and efficient protective pioneer forest in 20 to 30 years ... this method, if properly applied, quickly produces a multi-layered forest and according to him, a soil with a microbial and acari composition quickly approaching that of a normal primary forest.
And regenerative ecologically-harmonious agriculture, e.g.: "Treating the Farm as an Ecosystem with Gabe Brown Part 1, The 5 Tenets of Soil Health" https://www.youtube.com/watch?v=uUmIdq0D6-A
Reversing desertification: https://en.wikipedia.org/wiki/Desert_greening