Published in Scientific Papers. Series A. Agonomy., Vol. LVI
Written by Vasilica STAN, Ana VÎRSTA, Elena Mirela DUŞA
An inventory of nitrous oxide (N2O) emissions from Romanian agricultural soils was carried out in 2012 for a period of 22 years (1989-2010) using the IPCC (2000) approach. Activity data comes from the Romanian Institute for Statistics and IPCC default emissions factors were used as any country-specific emissions factors were developed since Romania ratified the Kyoto Protocol in 2001. Direct emissions of N2O, resulted from anthropogenic activities (i.e. from the soils to which the N is added) and indirect emissions (through volatilization as NH3 and NOx and subsequent redeposition, and through leaching and runoff) were calculated using the IPCC (2000) Guidelines equations (Tier 1a and Tier 1b). The total soil emissions decreased from 46.29 Gg N-N2O in 1989 to 20.18 Gg N-N2O in 2000. Between 2001 and 2010, only in 2004 there was an important growth of N2O emissions, but not more than 24.42 Gg N-N2O respectively. This decrease of total soil emissions of N-N2O is mainly due to the dissolution of state agricultural entreprises and agricultural cooperatives and to the reforms of this economical sector. In order to improve the quality of the estimations and to reduce uncertainty, for further inventories, national data will be necessary.
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