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|Title:||Developing Spatially Stratified N(2)O Emission Factors for Europe.|
|Authors:||LEIP Adrian; BUSTO MIRKO; WINIWARTER Wilfried|
|Citation:||ENVIRONMENTAL POLLUTION vol. 159 no. 11 p. 3223-3232|
|Publisher:||ELSEVIER SCI LTD|
|Type:||Articles in periodicals and books|
|Abstract:||We investigate the possibility to replace the - so-called - Tier 1 IPCC approach to estimate soil N(2)O emissions with stratified emissions factors that take into account both N-input and the spatial variability of the environmental conditions within the countries of the European Union, using the DNDC-Europe model. Spatial variability in model simulations is high and corresponds to the variability reported in literature for field data. Our results indicate that (a) much of the observed variability in N(2)O fluxes reflects the response of soils to external conditions, (b) it is likely that national inventories tend to overestimate the uncertainties in their estimated direct N(2)O emissions from arable soils; (c) on average over Europe, the fertilizer-induced emissions (FIE) coincide with the IPCC factors, but they display large spatial variations. Therefore, at scales of individual countries or smaller, a stratified approach considering fertilizer type, soil characteristics and climatic parameters is preferable.|
|JRC Institute:||Sustainable Resources|
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