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Effects of climate change on the yield of winter wheat in the eastern Mediterranean and Middle East

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Lelieveld,  J.
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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Citation

Constantinidou, K., Hadjinicolaou, P., Zittis, G., & Lelieveld, J. (2016). Effects of climate change on the yield of winter wheat in the eastern Mediterranean and Middle East. Climate Research, 69(2), 129-141. doi:10.3354/cr01395.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002C-8FA7-7
Abstract
Warming and drying in the eastern Mediterranean and the Middle East (EMME) associated with climate change may have consequences for humans and ecosystems, including agriculture. Agriculture can be directly affected through meteorological conditions that influence crop growth and yield. Here we explored changes in the yield of durum (winter) wheat Triticum tirgidum in the EMME region caused by projected changes in thermal and hydrological conditions, employing the agro-ecological zones (AEZ) methodology. The climate input was obtained from simulations by the PRECIS regional climate model over the EMME domain at 25 km resolution, driven by a range of IPCC emissions scenarios for the 21st century. For the crop yield calculation, we used 2 steps of the biomass calculation from the AEZ methodology by calculating crop yield potentials with regard to temperature, solar radiation and evapotranspiration regimes. Our results showed that for the recent past, the highest wheat yields are found in the Fertile Crescent and the coastal areas of eastern Mediterranean Europe. The former region is projected to be negatively affected by the additional heat due to climate warming, while in the latter region yield gains may be expected. Our implementation of the AEZ methodology can be based on a range of climate data and can be applied to a number of crops, contributing to yield studies relevant for regional assessments of food security.