Impact of future climate change on land and water productivity for wheat crop (Wasit Governorate, Iraq)

In AquaCrop model was used to calibrate and verify the performance of the winter wheat crop in south of Iraq Al-Suwaira Research Station using data recorded in period ۱/۱/۲۰۰۸ and ۳۱/۱۲/۲۰۱۷. The results showed an increase in both annual and monsoon rains at the mid and end century periods for both RCP۴.۵ and REP۸.۵ scenarios implementing model GFDL-ESM۲M. The annual and monsoon rains decreased in the EC-Earth model for both the RCP۴.۵ and RCP۸.۵ scenarios, while increased slightly in the CNRM-CM۵ model under RCP۴.۵ and dropped with RCP۸.۵. Highest yield was recorded at the base period (۲.۳۶ ton/hectare) during the simulation period. The water productivity increased compared to the base period ۲۰۴۰-۲۰۵۰, while it was equal for both base period and the period ۲۰۲۰-۲۰۳۰ and in the RCP۸.۵ scenario.

کلیدواژه ها:

Climate Change ، Water productivity ، Aquacrop model