N.Core
1st Class of Neoa
One way to distinct this is by making a custom Forest feature. That would require a lot of compatibility adjustment to make it work with other mods that uses the Forest feature, it would be a modder's nightmare.Would it be possible to do somehow like Civ 6, where replanted forest are slightly weaker than originals, and couldn't receive national parks ? It's already the case IRL, replanted forests are more like plantation where all trees are aligned, and would definitely not qualify for national parks. Indeed, most of the time they only serve as a new source of wood => building material.