You might think it's a healthy forest with pretty green ferns. But do you see any shrubs? Any wildflowers? Any tree seedlings? This is NOT what a healthy forest looks like.
People tend to think of the Amazon or Africa when they hear the word 'deforestation', and yet we've got rampant deforestation of our parks and open spaces occurring right here in Fairfield County. This doesn't involve cutting down trees, and most people cannot see it. Take a look at the picture below, taken in Orange, for example:
This is a young forest and the trees will keep growing for decades. But someday, they will die, from old age, or maybe we'll have another '38 hurricane, which blew down a couple billion trees. And then what? With no tree seedlings, what will become of our forests? Will they turn into grassland? Or just fill up with thickets of unpalatable invasive species like burning bush and Japanese barberry, and maybe some vines like greenbrier and the insidious Mile-A-Minute vine (the new one that can grow up to 6 inches per day). I don't think anyone really knows.