TY - RPRT T1 - Mapping Critical Levels for Vegetation: Chapter 3 Y1 - 2017 A1 - Defra AB -

This fully revised version of Chapter 3 of the ICP Vegetaition report includes updates to the critical levels for ozone agreed at the 30th ICP Vegetation Task Force Meeting, 14-17 February, 2017, Poznan, Poland. The critical levels for SO2, NOX and NH3 and associated text have not been changed since the previous version. This version was published in April 2017 (minor edits October 2017).

UR - https://icpvegetation.ceh.ac.uk/publications/documents/FinalnewChapter3v4Oct2017_000.pdf ER - TY - RPRT T1 - RoTAP: Review of Transboundary Air Pollution: Acidification, Eutrophication, Ground Level Ozone and Heavy Metals in the UK Y1 - 2012 A1 - Defra PB - Centre for Ecology & Hydrology UR - http://www.rotap.ceh.ac.uk/documents ER - TY - ICOMM T1 - The Air Quality Strategy for England, Scotland, Wales and Northern Ireland (Volume 1) Y1 - 2007 A1 - Defra PB - Department for Environment, Food & Rural Affairs UR - http://www.official-documents.gov.uk/document/cm71/7169/7169_i.pdf ER - TY - RPRT T1 - An introductory guide to valuing ecosystem services. Y1 - 2007 A1 - Defra PB - Defra CY - London UR - http://www.defra.gov.uk/wildlife-countryside/natres/eco-value.htm ER -