Impact of Climate Change on Irrigation Demand and Crop Growth in a Mediterranean Environment of Turkey

Author： Yano Tomohisa Aydin Mehmet Haraguchi Tomokazu

Publisher： MDPI

E-ISSN： 1424-8220|7|10|2297-2315

ISSN： 1424-8220

Source： Sensors, Vol.7, Iss.10, 2007-10, pp. : 2297-2315

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Abstract

A simulation study was carried out to describe effects of climate change on crop growth and irrigation water demand for a wheat-maize cropping sequence in a Mediterranean environment of Turkey. Climate change scenarios were projected using data of the three general circulation models—GCMs (CGCM2, ECHAM4 and MRI)—for the period of 1990 to 2100 and one regional climate model—RCM—for the period of 2070 to 2079. Potential impacts of climate change based on GCMs data were estimated for the A2 scenario in the Special Report on Emission Scenarios (SRES). The forcing data for the boundary condition of the RCM were given by the MRI model. Daily CGCM2 and RCM data were used for computations of water balance and crop development. Predictions derived from the models about changes in irrigation and crop growth in this study covered the period of 2070 to 2079 relative to the baseline period of 1994 to 2003. The effects of climate change on water demand and on wheat and maize yields were predicted using the detailed crop growth subroutine of the SWAP (Soil-Water-Atmosphere-Plant) model.