1 / 14

Outline according to CWIs Ex-post application

Outline according to CWIs Ex-post application Acidification/eutrophication under under different deposition scenarios (Specific Workplan Item c) Robustness Links to biodiversity

jens
Download Presentation

Outline according to CWIs Ex-post application

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Outline according to CWIs • Ex-post application • Acidification/eutrophication under under different deposition scenarios (Specific Workplan Item c) • Robustness • Links to biodiversity • Sulphur and nitrogen deposition, soil acidification, eutrophication and vegetation effects (Specific Workplan Item b) • Quantified trends • Comparing trends in sulphur and nitrogen deposition with EMEP results (Specific Workplan Item a) • Key parameters

  2. Ex-post application • Development of acidification and eutrophication of forest soils under different • deposition scenarios (Specific Workplan Item c) • ICP M&M recommended (26th TFM in Paris) • Application of VSD+ and BERN Models • Cooperation between ICP M&M and other ICPs • ICP Forests cooperates with German NFC of ICP M&M (ÖKO-DATA) • ÖKO-DATA will for 75-100 ICP Forests Level II plots calculate • Critical loads for acidity and nitrogen (SMB-Model) • Critical loads exceedances • Dynamics of C and N (VSD+ Model) • Possibility degree • Species (BERN) • Plant communities (BERN) • Scenarios • Deposition • Climate

  3. Ex-post application • For one Level II plot and • several years (1950-2030) • S and N deposition • EMEP (1950-1980) • ICP Forests (1996-2007) • CCE (2020-2030) • CL-function for eutrophication • Forest • 1950-2003 not protected • Thereafter protected

  4. Ex-post application • Depending on • BS and C/N • Different forest communities • Starts as ash-beech forest • Remains beech forest • Available for • Species level • Extinction of species

  5. Robustness • Regularly conducted • Laboratory intercomparison exercises (ringtests) • Soil analyses • Soil solution analyses • Precipitation (deposition) analyses • Needle-leaf chemistry • International intercalibration courses (ICCs) • Crown condition • Defoliation • Biotic and abiotic damage types •  Deviations between labs decrease over time

  6. Robustness • Results of water ringtests • Soil solution • Precipitation • Decrease • Percentage of non-tolerable results for each element • Variation between elements

  7. Links with biodiversity • Canocial Correspondence Analysis • Explanation of variance in ground vegetation species by e. g. • pH • BS • CEC • N deposition • S deposition • BC deposition • on 477 Level II plots with • Ground vegetation • Soil condition • Deposition • Modelled (EMEP) • Measured by ICP Forests (181 plots)

  8. Biodiversity • On 181 plots • Factors explained 19.23% of variance • Most important • Tree species • Soil • Deposition • Climate • N deposition and BC deposition • 15.0% of the explained variance • Small, but statistically significant impact

  9. Quantified trends • Temporal trends • SO4 • NH4 and NO3 • Decrease minor • N bulk • N throughfall • Spatial trends compared • measured (ICP Forests) • modelled (EMEP)

  10. Quantified trends • Superimposed • Wet deposition (EMEP, 50x50 km) • Bulk deposition (ICP Forests)

  11. Quantified trends • For SO4: Visual coincidence • Blue ICP Forests plots in blue EMEP cells • Yellow ICP Forests plots in yellow EMEP cells • But r2 small (0.2 - 0.3)

  12. Key parameters • Acidification • BS on 5500 Level I/II plots • ANC on 250 Level II plots • pH soil solution on 200 plots • pH solid soil on 4000 plots

  13. Key parameters • Eutrophication • N pools on 515 Level II plots • NO3 leaching on 121 Level II plots

  14. Results • Described in greater detail in • 3 Technical Reports • 1 Executive Report (glossy) • Laid out in the Salle

More Related