Also worth a view is the Loess Plateau project undertaken in China. The rehabilitation of a large scale ecosystem roughly the size of Belgium, based on similar principles to what Mark Shepard does on his farm.
This illustrates that the answers are multifaceted and not so simplistic as Savory claims. In fact, pastoral activities were largely responsible for the degradation of the land in the first place - though these were clearly not under a holistic management regime.