Land sustainability in Iran has been threatened by the reduction in underground water and
land subsidence. In recent years, the underground water balance in plains of Fars province,
Iran, has undergone a negative trend, which is still going on. This study simulates the effects
of groundwater loss on the farming systems in the Kamin plain located in Fars province for
different sustainability groups. We used Positive Mathematical Programming approach,
using GAMS software to investigate the effects of a decline in underground water supply on …