The Impact of climate change on agricultural production in Mediterranean countries

Thesis Type: Doctorate

Institution Of The Thesis: Middle East Technical University, Turkey

Approval Date: 2015

Thesis Language: English

Student: Mehmet Ufuk Atay



The aim of the study is to determine the impact of climate change on agriculture for Mediterranean countries by employing vulnerability and econometric analysis. At first step, a composite agricultural vulnerability index is created by principal component analysis (PCA) for Mediterranean counties and world’s top 35 cereal producer countries. Then, based on index scores, countries are grouped by cluster analysis. Several indicators are selected from different international databases according to three components of vulnerability which are exposure, sensitivity and adaptive capacity by assessing the related previous studies, examining the relevancy of indicators with food security and data availability from the international sources. As a second step, econometric analysis is conducted for clustered country groups obtained from the vulnerability index development part of the study. Panel ARDL method for pooled mean group (PMG), mean group (MG) and dynamic fixed effect (DFE) estimators is applied to clusters for three mostly harvested crop in Mediterranean region which are wheat, maize and potato. The novelty of this study is based on the methodology applied to determine the impact of climate change on crops. As a result, it is suggested that North African countries are more vulnerable to climate change in agriculture than South European countries due to their low adaptive capacity level. Another finding is that selected crops are more influenced from temperature in the long run when compared to impact of precipitation. An increase in temperature by 1% for cluster-1 and cluster-2 countries leads to decline in 0.3% and increase in 1.1% in wheat yield; 0.36% and 0.67% decline in maize yield, rise in about 2.0% and 2.8% in potato yield, respectively. Further, output of this study helps policy makers to measure and understand better the degree of risk to climate change and implement appropriate regulations for the agricultural sector.