The analysis of the most important climatic parameters affecting performance of crop variability in a changing climate
Safieh Javadinejad, Saeid Eslamian, Kaveh Ostad Ali Askari
Abstract
Projecting crop yield, under future climate plays a vital role in planning for supply and demand, especially in arid and semi-arid regions. The rice and potato are sensitive to variations in temperature and rainfall patterns, the present study was undertaken to assess the impact of climate change on these crop yields. Historical climate data from 1971-2005 were used as input to CROPWAT model to analyse the potential and actual evapotranspiration that affects crop yields. Furthermore, the generated local climatic data of future years (2006-2040), (2041-2075) and (2076-2100) under the severest scenario (RCP 8.5) from CMIP5 climate model are selected. Then the data were downscaled statistically and were inputted to the CROPWAT to determine the changes in ETo, Eta and crop yield from the baseline period for Zayandeh Rud river basin. The results indicate that all crops show increasing water requirement in the future period and enable us to generate the appropriate adaptation measures.