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N 2 O emission factors for Italian crops

Authors :
Giorgio Alberti
Teresa Bertolini
Angelo Fierro
Franco Miglietta
Simona Castaldi
Annachiara Forte
Riccardo Valentini
Castaldi S., Alberti G., Bertolini T., Forte A.,Miglietta F.,Valentini R., Fierro A.
R. Valentini and F. Miglietta
Castaldi, Simona
Alberti, Giorgio
Bertolini, Teresa
Forte, Annachiara
Miglietta, Franco
Valentini, Riccardo
Fierro, Angelo
Source :
The Greenhouse Gas Balance of Italy ISBN: 9783642324239
Publication Year :
2014
Publisher :
Springer Berlin Heidelberg, 2014.

Abstract

Nitrous oxide (N 2 O) emissions from several Italian croplands along a latitudinal gradient were analyzed and the fertilizer induced emission (FIE) factor, for each single fertilization event, was calculated. Data show that the average emission factor was between 0.7 and 0.3 %, hence much lower than the IPCC EF used for temperate croplands. The relationship between N 2 O production and applied N fertilization rate was exponential and not linear, although the rate of exponential increase was lower than previously reported. Maximum N 2 O emission rate was correlated with magnitude of the total FIE, whereas it was inversely related to the length of FIE, which varied from a minimum of 8–56 days. Overall data suggest that the internationally applied emission factors for temperate crops, which are empirically derived from sites with cooler and wetter climates than the Mediterranean, would overestimate N 2 O emissions for Italian crops, in particular those developing between spring and summer.

Details

Language :
English
ISBN :
978-3-642-32423-9
ISBNs :
9783642324239
Database :
OpenAIRE
Journal :
The Greenhouse Gas Balance of Italy ISBN: 9783642324239
Accession number :
edsair.doi.dedup.....17210061a834d363a91b33848c064c8a