> Growth out of decay takes work, but it takes considerably less work than accelerated decay and then trying to start again when there is nothing fertile left to build on.
Indeed. This is why conservation of habitats (however small, or degraded) makes more sense than trying to restore already-destroyed areas.
That said: if I could pick an area to work on for myself, I'd go for a stretch of wasteland. Why? Because the before-after difference would be more stark (read: more satisfying). And heavily degraded lands are in muuuch bigger supply than little-degraded areas.
More important would be a general willingness of the locals to not interfere with restauration efforts.
> I like this article because it demonstrates that there is always fertile land and opportunities where people are not looking.
Stronger: "fertile" isn't strictly needed. Fertile soil can be built - if necessary, starting from 'scratch' (yes it does take time). Basically: grow stuff (anything is better than nothing), mulch (bio-waste is free), keep doing so, and whatever soil you started with, will improve over time.
As the soil improves, plants grow better & other life returns.