Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Atmospheric deposition in European forests in 2019 |
| Keywords | forestdepositioneurope |
| Year | 2021 |
| Type | Contributo in volume |
| DOI | 10.3220/ICPTR1624952851000 |
| Authors | Aldo Marchetto, Peter Waldner, Arne Verstraeten, Daniel Zlindra |
| Text | 458999 2021 10.3220/ICPTR1624952851000 forest deposition europe Atmospheric deposition in European forests in 2019 Aldo Marchetto, Peter Waldner, Arne Verstraeten, Daniel Zlindra n/a Studying the effects of atmospheric pollution on forest ecosystems requires an evaluation of air quality and of the amount of pollutants carried to the forests by atmospheric deposition. Pollutant flux towards ecosystems through deposition mainly follows two pathways wet deposition of compounds dissolved in rain, snow, sleet or similar, and dry deposition of particulate matter through gravity or adsorption on forest canopy for example. Pollutant deposition shows a relatively high local variability, related to the distribution of pollutant sources and the local topography, and in situ measurement is needed to obtain accurate evaluations and to validate model estimates. In 2019, the chemical composition of atmospheric deposition under the tree canopy was measured in 290 ICP Forests Level II permanent plots throughout Europe. In this report, we focus on acidifying, buffering, and eutrophying compounds in canopy throughfall deposition. High values of nitrate deposition were mainly found in central Europe Germany, Denmark, Belgium, Czechia, Switzerland, and eastern Austria , while for ammonium they were also found in northern Italy and Poland. While most of central Europe receives a moderate amount of sulphate deposition, high values are mainly found close to the largest point sources. In the southern part of Europe, sulphate deposition is also influenced by volcanic emission and by the episodic deposition of Saharan dust. The influence of marine aerosols was relevant at sites in coastal areas. Calcium and magnesium deposition can buffer the acidifying effect of atmospheric deposition. High values of calcium deposition are reported in southern Europe, mainly related to the deposition of Saharan dust, and in eastern Europe. The correction for the marine contribution of calcium matters mainly for sites in central Europe and in Spain. In the case of magnesium, however, the distribution of the highest values is markedly reduced by the sea salt correction. Forest Condition in Europe The 2021 Assessment. ICP Forests Technical Report under the UNECE Convention on Long range Transboundary Air Pollution Air Convention . Michel A, Kirchner T, Prescher A K, Schwarzel K 978 3 86576 228 3 Published version http //icp forests.net/page/icp forests technical report Capitolo ICP Forests technical report 2021 ICP Forests technical report 2021 ICPForests_TR2021.pdf Contributo in volume aldo.marchetto MARCHETTO ALDO |