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Aristotle University of Thessaloniki (2022)

Energy equilibrium and greenhouse gas emissions in tree orchards

Κατσίκα Γεωργία Κωνσταντίνου

Titre : Energy equilibrium and greenhouse gas emissions in tree orchards

Ενεργειακά ισοζύγια και εκπομπές αερίων θερμοκηπίου σε δενδρώδεις καλλιέργειες

Auteur : Κατσίκα Γεωργία Κωνσταντίνου

Etablissement de soutenance : Aristotle University of Thessaloniki

Grade : Postgraduate Theses 2022

Résumé
The current thesis was conducted in order to highlight the most efficient peach varieties in terms of energy and water consumption in the area of Veria, municipality of the regional unit Imathia of Central Macedonia. The varieties were divided into two groups based on their harvest season, early and late and were studied during a growing year. The orchards, which were under integrated management system, were selected by proportional stratified random sampling. The data were collected by getting in contact with the producers who belong to the Agricultural Cooperative Neos Aliakmon. A total of 21 orchards (10 with early and 11 with late varieties) participated in the survey. For the energy analysis, all the production coefficients were taken into account, as well as the fruit production, converted to energy units and then the greenhouse gas emissions and water consumption were estimated. The results showed that despite the fact that early varieties generally had lower energy inputs, the energy productivity and energy efficiency ratios were higher for late varieties. Fuels had the highest energy input for both groups followed by irrigation, fertilizers and machinery. Late varieties also performed better in both carbon and water footprint indices. It seems that late varieties are more suitable for cultivation in the specific area, as they use more efficiently the energy expended during their production, have lower greenhouse gas emissions and consume less water per unit of fruit production. Finally, it is useful to note that in possible future climate scenarios with long periods of drought, high temperatures and extreme rainfall at the Mediterranean region, varieties with similar adaptability will be more suitable to limit the carbon and water footprint.

Mots clés : Carbon footprint, Life cycle assessment, Ανθρακικό αποτύπωμα, Εκτίμηση του κύκλου ζωής, Energy analysis, Ενεργειακή ανάλυση

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Page publiée le 22 novembre 2022