Perhaps if we had a different view of burials and the afterlife this may be an easier choice... rather than treating cemeteries as sacred lands which can't be touched we should approach cemeteries as a place for rebirth. If we were to bury the bodies then plant a tree or bush to mark the spot we'd be taking a small bite out of our CO2 levels and we'd be using our land to the optimum advantage.

I would think that if we could re-use our cemeteries turning them into parks and urban playgrounds we'd be able to honour the dead and keep the land usable.