Yeah thats that thing about disturbance and succession - in a full forest, things slow down
alot - until there is a disturbance, like a tree collapsing. Then a frenzy of renewed life.
Our hesitance to use disturbance consciously IMO has its roots in our conservationist approach to nature - as in we need to protect nature from us. But we now need to take the next step and think more along the lines of
cooperation and peaceful coextistence. It's a paradigm shift in a way, but one we'd better get doing (as we are here!) if we want to have a chance at turning our destructions around.
There's this no-till guy who did an experiment over a few years, to see whether crop rotation is actually unnecessary.
While there are some unknowns to his experiment that make his results not quite conclusive to my mind, I thought it interesting - he found that after 3-4 years of planting the same crop on the same spot, yields diminish and crops no longer grow as well.
Seen from a purely soil food web perspective, the logics would be that the same crop does better and better over time, since soil life is finetuned to exactly that plant's needs. In fact, Elaine Ingham expressly proposes this.
May be a question of stepping back for the whole picture to find what other things could be factoring in there...