Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Trends in the chemistry of atmospheric deposition and surface waters in the Lago Maggiore watershed |
| Abstract | The Lago Maggiore watershed is the area most affected by acid deposition in Italy. Trend analysis was performed on some long-term (15-30 years) series of chemical analyses of atmospheric deposition, four small rivers draining forested catchments and four high mountain lakes. An improvement in the quality of atmospheric deposition was detected, due to decreasing sulphate concentration and increasing pH values. Similar trends were also found in high mountain lakes and in small rivers. However, atmospheric deposition is still carrying a huge, steady flux of nitrogen compounds (nitrate and ammonium), which is causing increasing nitrogen saturation in forest ecosystems and increasing nitrate levels in rivers. Besides atmospheric deposition, an important factor controlling water acidification and recovery is the weathering of rocks and soils, which may be influenced by climate warming. A further factor is the episodic deposition of Saharan calcareous dust, which contributes significantly to base cation deposition. |
| Source | Hydrology and earth system sciences 5, pp. 379–390 |
| Keywords | trendatmospheric depositinitrogenstream water chemist |
| Journal | Hydrology and earth system sciences |
| Editor | Copernicus Publ., Göttingen, Germania |
| Year | 2001 |
| Type | Articolo in rivista |
| Authors | Rogora M. 1, Marchetto A. 1, Mosello R. 1 |
| Text | 52804 2001 trend atmospheric depositi nitrogen stream water chemist Trends in the chemistry of atmospheric deposition and surface waters in the Lago Maggiore watershed Rogora M. 1, Marchetto A. 1, Mosello R. 1 1 CNR ISE The Lago Maggiore watershed is the area most affected by acid deposition in Italy. Trend analysis was performed on some long term 15 30 years series of chemical analyses of atmospheric deposition, four small rivers draining forested catchments and four high mountain lakes. An improvement in the quality of atmospheric deposition was detected, due to decreasing sulphate concentration and increasing pH values. Similar trends were also found in high mountain lakes and in small rivers. However, atmospheric deposition is still carrying a huge, steady flux of nitrogen compounds nitrate and ammonium , which is causing increasing nitrogen saturation in forest ecosystems and increasing nitrate levels in rivers. Besides atmospheric deposition, an important factor controlling water acidification and recovery is the weathering of rocks and soils, which may be influenced by climate warming. A further factor is the episodic deposition of Saharan calcareous dust, which contributes significantly to base cation deposition. 5 Published version Il lavoro e stato prodotto nellambito del Progetto UE RECOVER 2010 Predicting recovery in acidified freshwater by the year 2010 and beyond e pubblicato nel Volume Speciale Assessment of recovery of European surface waters from acidification 1970 2000 della Rivista Hydrology and Earth System Sciences dedicato ai risultati del primo anno del Progetto. Impact Factor 2002 della Rivista 1.127 Articolo in rivista Copernicus Publ. 1027 5606 Hydrology and earth system sciences Hydrology and earth system sciences Hydrol. earth syst. sci. Hydrology and earth system sciences. HESS Gottingen. Print Hydrology and earth system sciences Print aldo.marchetto MARCHETTO ALDO michela.rogora ROGORA MICHELA rosario.mosello MOSELLO ROSARIO |