Figure 9 Key Feedback processes in the food production system
It is observed that food production per capita can be sustained in most cases until the turn of the century, possibly from increasing application of capital inputs and intensity of cultivation. However, land quality may be expected to deteriorate continuously, which may cause sudden declines in output in the early part of the 21st century unless concerted land conservation and reclamation efforts not included in the model have been put in place. Countries affected most are those with relatively higher population growth rates and more intensive land use.