A good old boy buddy of mine once showed me how he was clearing Slash Pines off his homestead lot. He was leaving 4' high stumps, after felling the trees.
He explained that leaving any shorter of a stump left insufficient wood to draw wood destroying insects. He'd leave the stumps just like that, and over three years time, the stumps would decompose to below grade, to the point he'd be backfilling a hole in the ground, all without having to lift a hand to work the stump. He had examples on hand from the three previous years.
Neat trick if the site can accommodate a stump for three years. I suppose that different tree species would decompose at different rates, and you'd have to make sure that the stump would die, rather than reemerge.