eutrophication

Umwelt-Indikator

Indicator: Agricultural nitrogen surplus

A graph shows the agricultural nitrogen surpluses for individual years and as rolling 5-year means between 1990 and 2018. The 5-year-mean nitrogen surpluses in kilogrammes per hectare dropped from 116 to 93. The target for 2030 is 70 kilogrammes per hectare and year.

The five-year average of nitrogen surplus per hectare of utilized agricultural land has decreased by 20 % since 1992.The Federal Government aims to reduce the average nitrogen surplus of the years 2028 to 2032 to 70 kilogrammes per year.Efforts must be considerably intensified to reach this target. read more

174

Indicator: Eutrophication of the North Sea/Baltic Sea by nitrogen

A graph shows the change in concentration of total nitrogen in all the main rivers which enter the North Sea and Baltic Sea in Germany. A distinction is made between the North Sea and the Baltic Sea. The concentration value is given as the moving average of the flows of the past 5 years in milligrams per litre.

To achieve the objectives for the protection of the marine environment, Germany has committed to comply with maximum concentrations of nitrogen at estuaries.These target concentrations in the North Sea and Baltic Sea are only slightly exceeded on average by all rivers, but some rivers still have very high concentrations.In order to fulfil the objectives, it is necessary that each river achieves th... read more

104

Indicator: River eutrophication by phosphorus

A graph shows the distribution of total phosphorous quality classes (QC) II-III and below for 1982 to 2018 for measuring sites exceeding the requirement for good status. The share of higher exceedance (QC IV) has dropped markedly, that of lower exceedance (II-III) has risen sharply.

Too high phosphorus concentrations are recorded at more than half of all river measurement stations.The share has declined by around one third since the beginning of the 1980s. Very high levels of pollution are very rare nowadays.The Federal Government's aim is to meet the requirements for good status for phosphorous in all water bodies by 2030 at the latest.This primarily requires a change in fer... read more

105

Indicator: Nitrogen eutrophication

A graph shows the proportion of vulnerable ecosystems in Germany where the critical loads for eutrophication were exceeded between 2005 and 2015 and the target for 2030. In 2005, the share was 77 % and in 2015, it was 68 %.

68 % of vulnerable ecosystems in Germany are threatened by excess nitrogen deposition.With the revised German Sustainable Development Strategy 2016, the Federal Government aims to reduce the proportion of these areas by 35 % until 2030. According to the current calculation basis, this results in a target value of 50 % by 2030.This target is feasible only if efforts to reduce air pollution are main... read more

298

Indicator: Ecological status of lakes

A graph shows the distribution of the environmental status and potential of the lakes for the years 2010 and 2015. The target for 2027 is also shown (100 percent ‘good’ or ‘very good’). In 2015, 26.4 percent showed at least a good status or good potential.

In 2015 26 % of the lakes in Germany were in at least good ecological status or showed at least a good ecological potential.According to the Water Framework Directive the target was 100 % by 2015. Now there is a deadline extension until 2027.Germany is still far from achieving this target. The timeframe until 2027 must be used to achieve these ambitious goals. read more

120

Indicator: Ecological status of transitional and coastal waters

A graph shows the distribution of the environmental status of the North and Baltic Seas for the years 2010 and 2015. The target for 2027 is also shown (100 percent ‘good’ or ‘very good’).

In 2015 no water body of transitional or coastal waters in the North and Baltic Seas achieved good or very good status.According to the European Water Framework Directive, by 2015 all waters should have achieved at least a good ecological status.This target has not been achieved. The time must now be used to reach the ambitious targets by 2027 at the latest.This will require considerable additiona... read more

188

Indicator: Ecological status of rivers

A graph shows the distribution of the environmental status and potential of the rivers for the years 2010 and 2015. The target for 2027 is also shown (100 percent ‘good’ or ‘very good’). In 2015, 6.7 percent showed at least a good status or good potential.

In 2015 only around 7 % of German streams and rivers were in at least a good ecological status or had at least a good ecological potential.According to the European Water Framework Directive, by 2015 all rivers should have achieved at least a good ecological status or potential.This target has not been achieved. The time up to 2027 must be used to reach these demanding objectives.The measures take... read more

122
Soil | Agriculture

Nitrogen

A tractor spreading fertilizer on a field

In as much as nitrogen is an indispensable nutrient for all living things, the use of mineral and organic nitrogen fertilizers to increase crop yields is a common practice. It is essential that such fertilizer be used judiciously and on a needs oriented basis. Nitrogen surpluses can damage terrestrial and aquatic ecosystems and can have harmful climatic, air quality, and biodiversity effects. read more

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The Umweltbundesamt

For our environment