Climate Change Impacts on Wheat Yields in the North-West of Tunisia

Faicel Gasmi, Mounir Belloumi () and Mohamed Matoussi ()
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Mounir Belloumi: University of Sousse, Tunisia

No 652, Working Papers from Economic Research Forum

Abstract: In this study we are examining the climate change impacts on cereal yields in the North-West of Tunisia by focusing on the effect of increase in temperature on durum wheat yields. The index of growing degree days (GDDs) or the corresponding growing season length (GSL) is commonly used in agronomic studies to determine the effect of temperature on yields. The main goal of the current study is to analyse the effect of historical increase of temperature on GSL of durum wheat in North-West of Tunisia (Beja and El-Kef) and assess the future impact of climate change on wheat yields. We find that high temperatures correspond to a decrease in growing season length. Future increases in temperatures between 1.5 and 3.5°C may reduce the yield of wheat in the Beja district between 16% and 19%.

Pages: 17
Date: 2011-01-12, Revised 2011-01-12
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