Sadly, a lot of Australia's agricultural landscapes are in the grip of a slow death. It's not just the clear felling of the woodlands or the loss of life, that is species (plants and animals) extinction either. There is also drastic loss in life support systems.
The plagues of rabbits (introduced to the continent with the first fleet) invaded the rangelands, eating all the vegetation and leaving the soils exposed to wind and rain. Overgrazing by cattle and sheep, particularly during periods of drought, exacerbated problems; in areas where rabbits never flourished, cattle seem to have been equally effective in denuding the country.
Much of the one quarter of Australia that is not rangelands is being intensively farmed. There is salinity, in many places, and acidity in others, both of which are devastating this farm land.