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The Expert Panel on Nitrogen Budgets (EPNB) Berlin, September 28, 2012

The Expert Panel on Nitrogen Budgets (EPNB) Berlin, September 28, 2012. Wilfried Winiwarter, Albert Bleeker (co-chairs). Take-home messages.

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The Expert Panel on Nitrogen Budgets (EPNB) Berlin, September 28, 2012

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  1. The Expert Panel on Nitrogen Budgets (EPNB)Berlin, September 28, 2012 Wilfried Winiwarter, Albert Bleeker (co-chairs)

  2. Take-home messages • “Guidance Document on National Nitrogen Budgets” has been adopted by WGSR and will be forwarded to EB-31 as an official document (to demonstrate and to report voluntarily under revised Gothenburg protocol). • Your help needed: Guidance document defines nitrogen pools (and sub-pools) to be derived, according to specific guidance still to be written. • Your help needed: Extending guidance also to farm-level budgets.

  3. Nitrogen budgets • “Reactive Nitrogen”, Nr, is being conserved and transferred through different environmental pools (“N cascade”). • Considerable information is available from different sources on nitrogen concentrations in pools and nitrogen flows. • Mass conservation considerations allow validation of system understanding in models.

  4. Examples Leip et al., 2011 • Germany • Switzerland • UK, France, Netherlands, Austria, … • European Union

  5. Collaboration • OECD “key environmental indicator” • EUROSTAT • Gross Nutrient Balances • Fertilizer Statistics & Agro Environmental Indicators • Memorandum of understanding between UN-ECE and Eurostat has been drafted

  6. Pools

  7. Work plan 2012/13 • Complete core guidance document • Continue cooperation with international bodies, explore further potentials • Further support national N budget activities and harmonization of data collection • Develop farm level budgets as a second main activity to EPNB Next EPNB meeting ???

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