Eutrophication means the oversaturation of an ecosystem with non-organic nutrients such as nitrogen and phosphorus compounds.
For terrestrial eutrophication the inputs of nitrogen via the air in the form of ammonia (NH3) and nitrogen oxides (NOx) are decisive.
EN 15804 + A2 prescribes the "Accumulated Exceedance" method for the "Eutrophobic Potential - Land". This method quantifies the area on which the carrying capacity of the ecosystems is exceeded and the extent of the exceedance.
For the calculation the EK-JRC characterization factors shall be used: http://eplca.jrc.ec.europa.eu/LCDN/developerEF.xhtml
The sensitivity of the ecosystems is taken into account. The D-A-CH countries all have very high characterization factors here (very high sensitivity of the systems).