1 دانشگاه فردوسی مشهد، مشهد. ایران.
2 دانشگاه پیام نور، تهران، ایران.
عنوان مقاله [English]
Aqueducts are one of the underground water resources in arid and semi-arid areas of Iran, and Gonabad region is very important in this context due to its many legendary aqueducts, such as the Kasbah aqueduct. Investigations carried out in the Gonabad Plain, during the last thirty years, especially from the 1360s onwards, indicate that two main factors are effective in reducing the irrigation of canals. One is the drop in the underground water level and the other is the phenomenon of global climate change, which affects In our country, it has been manifested in the form of severe droughts, and it has been effective in aggravating the drop of the water level and the deficit of the underground reservoir. These two factors have severely affected the water crisis in the Gonabad region, so that currently, the Gonabad plain is considered one of the prohibited plains for drilling wells. The direct consequence of the drop in the underground water level and the deficit of water reserves in this region has been drying up and reducing the flow of canals, which secondary consequences such as the drying up of agricultural lands, the reduction of the income of the villagers, and as a result the evacuation of villages and the increase of migration to other cities are apparent. In this investigation, statistical, descriptive, correlation and document analysis methods have been used and it has been determined that there is a direct relationship between the irrigation of the aqueduct and the reduction of the cultivated area, so that during the years 1376 to 1385, that is, for the period 9 years, canal irrigation has decreased by 23% and as a result the cultivated area has decreased by 59%. Also, there is a correlation between the migration of villagers and irrigation of canals, so that 14% of the migration of villagers was caused by the decrease of irrigation of canals.