Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Long-term patterns of deposition, soil solution and stream water chemistry in an Alpine forest ecosystem. |
| Abstract | Alpine ecosystems, both terrestrial and aquatic, are particularly sensitive to climate change and alteration of biogeochemical cycles. With the aim of understanding the potential effects due to the combination of climate change and atmospheric deposition, we evaluated the temporal evolution of some climatic factors and the chemical composition of atmospheric deposition, surface water and soil solution in an alpine LTER station. Monitoring data from for deposition (1995-2013), stream water (1997-2013), and soil solution (2006-2013) chemistries were statistically analyzed for long-term trends and seasonal patterns by using Seasonal Kendall test (SKT). Similarly to several European and North America sites we observed a sharp decline in sulfur concentrations, and a subsequent increase of pH values in all the analyzed environmental matrices. A less pronounced reducing has been detected for nitrate, but not for ammonia. These results are examined considering the seasonal variations of temperatures (min, max and mean), the amount of rain and snow, and the hydrological regime |
| Source | IUFRO 2015 "Global Challenges of Air Pollution and Climate Change to Forests", Nice, France, 1-5/6/2015 |
| Keywords | sulphur:nitratepHtrends |
| Year | 2015 |
| Type | Presentazione |
| Authors | Raffaella Balestrini , Carlo Delconte, Alessio Fumagalli |
| Text | 391988 2015 sulphur nitrate pH trends Long term patterns of deposition, soil solution and stream water chemistry in an Alpine forest ecosystem. Raffaella Balestrini , Carlo Delconte, Alessio Fumagalli Water Research Institute, National Research Council IRSA CNR , Via del Mulino 19, 20861 Brugherio, MB, Italy Alpine ecosystems, both terrestrial and aquatic, are particularly sensitive to climate change and alteration of biogeochemical cycles. With the aim of understanding the potential effects due to the combination of climate change and atmospheric deposition, we evaluated the temporal evolution of some climatic factors and the chemical composition of atmospheric deposition, surface water and soil solution in an alpine LTER station. Monitoring data from for deposition 1995 2013 , stream water 1997 2013 , and soil solution 2006 2013 chemistries were statistically analyzed for long term trends and seasonal patterns by using Seasonal Kendall test SKT . Similarly to several European and North America sites we observed a sharp decline in sulfur concentrations, and a subsequent increase of pH values in all the analyzed environmental matrices. A less pronounced reducing has been detected for nitrate, but not for ammonia. These results are examined considering the seasonal variations of temperatures min, max and mean , the amount of rain and snow, and the hydrological regime Preprint IUFRO 2015 Global Challenges of Air Pollution and Climate Change to Forests Nice, France 1 5/6/2015 Internazionale Contributo Presentazione raffaella.balestrini BALESTRINI RAFFAELLA TA.P04.032.001 Funzionalita degli ecosistemi acquatici dinamica dei nutrienti, idromorfologia e habitat fluviali |