Συντάχθηκε 17-02-2012 16:20
από Foteini Stamati
Email συντάκτη: fstamati<στο>tuc.gr
Ενημερώθηκε:
17-02-2012 19:39
Κύρια: απόφοιτος προπτυχιακός ΜΗΠΕΡ.
Άλλες ιδιότητες: απόφοιτος ΜΔΕ/Διδ. ΜΗΠΕΡ
Παρουσίαση διδακτορικής διατριβής της Φωτεινής Σταμάτη με τίτλο:
«Ο Κύκλος του Άνθρακα και του Αζώτου σε Αγροτικά Εδάφη (Carbon and Nitrogen Cycling in Agricultural Lands)»
Η παρουσίαση θα λάβει χώρα την Παρασκευή 24 Φεβρουαρίου 2012 και ώρα 16:00 μ.μ στην αίθουσα Μ4003 (κτίρια ΜΗΧΟΠ), στην Πολυτεχνειούπολη
Εξεταστική επιτροπή
1. Καθηγητής Νικολαΐδης Νικόλαος.-Τμ. Μηχ. Περιβάλλοντος, Πολυτεχνείου Κρήτης (επιβλέπων)
2. Καθηγητής Καλογεράκης Νικόλαος- Τμ. Μηχ. Περιβάλλοντος, Πολυτεχν. Κρήτης
3. Αν. Καθηγήτρια Ψυλλάκη Ελευθερία- Τμ. Μηχ. Περιβάλλοντος, Πολυτεχν. Κρήτης
4. Καθηγητής Kαρατζάς Γεώργιος- Τμ. Μηχαν. Περιβάλλοντος, Πολυτεχνείο Κρήτης
5. Καθηγητής Jerald Schnoor- Πανεπιστήμιο της Αίόβας (The University of Iowa)
6. Λέκτορας Παρανυχιανάκης Νικόλαος-Τμ. Μηχαν. Περιβάλλ., Πολυτεχνείο Κρήτης
7. Επίκουρη Καθηγήτρια Πανταζίδου Μαρίνα- Ε.Μ.Π.
ABSTRACT
Current management of soil has been recognized to be unsustainable. In the next 20-50 years, the pressures on soil and its core service functions are predicted to further increase, due to climate change (droughts, extreme precipitation events) and competing demands from production systems to provide food, biofuel and timber. It is of prime importance to re-evaluate current agricultural practices and develop alternative sustainable soil farming management systems that protect ecological functions of soil. There is urgent need for tools and methodologies that will give reliable predictions for climate change effects and restoration management to evaluate alternatives. The objective of this dissertation was to improve our understanding of the mechanisms of nutrient cycling and organic matter (SOM) protection/loss in soils and provide tools that can be used to assist the sustainable functioning of soil critical zone.
The scientific issues researched in this thesis can be summarized in the following objectives:
o Assessment methodology for soil Carbon simulation: Develop and validate with field data a methodology for RothC model parameter estimation, through initialization and calibration with field derived physical fractionation data, assessment of the uniqueness of solution, sensitivity analysis and quantification of uncertainties in modeling results.
o Testing of soil model across climatic gradient: Apply the developed methodology to native land to cropland conversions along an international climatic gradient to assess the pattern of carbon loss and the effectiveness of carbon addition, sensitivity analysis and quantify the uncertainties.
o Develop soil structure model: Develop and validate with field data a coupled soil carbon (RothC), aggregation, and structure turnover model, based on the current knowledge of the proposed mechanism in the relative scientific literature that suggests that macro-aggregates are formed around particulate organic matter, followed by the release of micro-aggregates.
o Assess soil status of Koiliaris River Basin Critical Zone Observatory: Assess the soil status by selecting with sophisticated statistics the appropriate soil parameters and quantify the effects of livestock grazing, land use changes and climate change on soil biochemical quality and water quality.
