Nitrogen emission to water: Absolute decoupling of nitrogen emissions from GVA is observed in seven countries (Austria, Bulgaria, Germany, Lithuania, Romania, Slovenia and Slovakia ). This means that these countries succeeded in economy growth while reducing emissions to water. As the area of agriculture land remained constant during the analyzed period, the decrease in emission can be attributed to decrease in specific gross nutrient balance per hectare.
Relative decoupling was observed in the Czech Republic, and Poland. This means that the resource efficiency has increased, however with higher absolute emissions. Decreases in emissions coupled with a decrease in GVA occurred in 11 countries (Belgium, Denmark, Finland, France, Greece, Italy, Luxembourg, the Netherlands, Portugal, Sweden and the United Kingdom). In six out of those 11 countries, the rate of emission decrease was greater than the rate of the GVA decrease.
Phosphorus emission to water: Absolute decoupling of phosphorus emissions from the GVA is observed in five countries (Austria, Czech Republic, Germany, Hungary, and Slovenia). Decrease in emission coupled with decrease in GVA occurred in ten countries (Belgium, Denmark, Finland, France, Greece, Luxembourg, the Netherlands, Portugal, Sweden and the United Kingdom). In all these countries except Denmark, the rate of emission decrease was greater than the rate of the decrease of GVA.
The ranges of nutrient emission intensity of agriculture are quite wide and reflect varieties of agriculture practices across European countries.
Values of nitrogen emission intensity for 2008 range from 6,0 to 176 tons of total nitrogen per million EUR GVA per year. Significant decrease in nitrogen emission intensity between 2000 and 2008 was recorded in Bulgaria, Portugal, Romania, Slovakia, and Slovenia. In 2008 Bulgaria, Portugal and Romania reported (in Eurostat) the lowest values of the specific nitrogen balance per hectare. In creased emission intensity was observed in Denmark, Ireland and United Kingdom, however, this was due to a falling GVA not to emissions, which actually were reduced. Calculation of emission intensity based on GVA diminished by subsidies, which reflects better the actual economic performance from agriculture, result in much higher emission intensities for countries, e.g., Norway, Finland , Lithuania and Poland with relatively high contributions from subsidies to the economy.. The increment in emission intensity associated with excluding subsidies is significant namely in Norway (106 t/mio EUR/y) and Finland (38,8 t/mio EUR/y).
The 2008 values for total phosphorus emission intensity range from 0,47 to 13,03 tons per million EUR GVA per year. Significant decrease in the phosphorus emission intensity (decrease by more than 50%) over the last decade was recorded in nine countries (Austria, Belgium, Czech republic, Germany, France, Luxembourg, the Netherlands, Portugal and Slovenia). Moreover, Austria, Germany, France, Luxembourg and Portugal, reported (Eurostat) the lowest values of the specific phosphorus balance per hectare comparable to the EU-27 average, being 1 kg of total phosphorus per hectare per year. The impact of subsidies on phosphorus emission intensity (based on 2008 data), was most significant in Norway and Finland, where the increment in emission intensity associated with excluding subsidies accounted for 16,24 and 3,49 t/mio EUR/y respectively , whereas the increment in remaining countries did not exceed 1 t/mio EUR/y.
Subsidies: The analysis of subsidies on the output of the agricultural industry for the studied years showed that 13 countries (Austria, Belgium, Denmark, Finland, France, Italy, Luxembourg, the Netherlands, Norway, Portugal, Sweden, Slovenia and the United Kingdom) reduced the proportion of subsidies in relation to the GVA of their agricultural sector between 2000 and 2008. On the other hand, 5 countries (Czech Republic, Lithuania, Poland, Romania and Slovakia) increased this proportion during the same period. Information was incomplete for Bulgaria and Germany, where subsidy levels for years 2000 and 2008 respectively were reported as zero (Eurostat). Noteworthy is the sharp increase in the proportion of subsidies as part of GVA (being in the range between 12-26 % of GVA) in new Member States like Lithuania, Poland, Romania and Slovakia accompanied by the increase of GVA values. And, on the other hand, the significant reductions in old Member States like Denmark, Luxembourg, Sweden and the United Kingdom.
Given the multiple factors that affect both the change in sectoral GVA and in nutrient balance, it is complicated to draw direct relationships between these two variables. Some key descriptors which could aid in explaining the behavior of these are the structure of the sector (e.g. farm size, standard gross margins, crop type, stocking rate), the socioeconomic characteristics of the area (e.g. rural population, income and employment levels) and the policy measures in place (e.g. subsidies). However, it must be noted that the specific context of each country could result in varying combinations of the mentioned factors and their aggregate effects.
Data and maps
Emission intensity of agriculture in Europe
The absolute decoupling of nutrient emissions from the domestic sector and population growth, over a period of almost two decades (1990-2011), is observed in fourteen countries (Austria, Belgium, Czech Republic, Germany, Denmark, Greece, Finland, Ireland, Malta, the Netherlands, Norway, Portugal, Slovenia and Turkey). The actual extent of decoupling, and the differences in trends among countries, may be partially explained by the different numbers of inhabitants connected to tertiary wastewater treatment technologies.
When making an EU wide comparison of the extent of decoupling of nutrient emissions from population growth, the actual proportion of the population connected to different types of wastewater treatment (elaborated in indicator CSI 024 ) and the completeness of data available on the population connected to collecting systems without treatment should be taken into consideration. The implementation status of the Urban Waste Water treatment Directive (UWWTD), which protects the water environment from the adverse effects of discharges of urban waste water, as well as the level of investment in water and wastewater management, may have an impact. Similarly, the implementation status of the Water Framework Directive (WFD) and Groundwater Directive may also have an impact. Furthermore household patterns and household income level affect the production and composition of wastewater and should also be considered.
It is assumed that the use of actual data on loads discharged from wastewater treatment plants, combined with the load values calculated for the population not connected to wastewater treatment, would add value to the decoupling indicator as it would better reflect the real situation.
Data and maps
Emission intensity of the domestic sector in Europe