Analisi degli impatti economici dei cambiamenti climatici: la variabilità della disponibilità di acqua per l’irrigazione nell’area della Nurra
Author(s)
Mazzapicchio, Graziano
Date Issued
April 22, 2008
Type
Doctoral Thesis
Abstract
This work examines the impact of the Climate Change on the most important climatic
components (precipitation and temperature). Moreover, it analyses the effects of the
uncertainty in the agricultural sector as regards variations of profitability, cropping
systems and the utilization of productive factors. This uncertainty is due to the impact of
the Climate Change on the water availability for farmers. The analysed area is located in
Nurra region, a territory in the north-west of Sardinia, in correspondence of the
hydrographical basin of Cuga. The historical series of precipitation and average
temperature have been analysed to estimate the impact of the Climate Change on the
most important climatic components, as regards long period evolutions and the
variability of the phenomena. The analysis shows a decreasing trend of the
precipitations and an increasing trend of the average temperatures, as well as it shows
an increase of the monthly variability of both components. A model of Discrete
Stochastic Programming has been applied to analyse the effects of the uncertainty in the
agricultural sector caused by the impact of the Climate Change on the quantity of water
that is provided to the farmers by the Irrigation District during the irrigation period. The
results show that the Climate Change modifies the surface assigned to the crops, with a
consequent reduction of the total gross income. Moreover, it causes a lower utilization
of most inputs: total water of the Irrigation District, total labour and chemical inputs. On
the other side, it increases the amount of water extracted from the wells.
Additional information
Dottorato di ricerca in Politica agraria
File(s)![Thumbnail Image]()
Name
gmazzapicchio_tesid.pdf
Size
1.08 MB
Format
Adobe PDF
Checksum (MD5)
d19934ca9e192225f3f501200d33d11e