Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Evaluation of nitrate sources and transformation in the Oglio river watershed |
| Keywords | nitrate contaminationOglio riverisotope dataLombardiaItaly |
| Year | 2013 |
| Type | Contributo in volume |
| Authors | Delconte C. [1], Sacchi E. [1], Allais E. [2], Racchetti E. [3] |
| Text | 260605 2013 nitrate contamination Oglio river isotope data Lombardia Italy Evaluation of nitrate sources and transformation in the Oglio river watershed Delconte C. 1 , Sacchi E. 1 , Allais E. 2 , Racchetti E. 3 1 Istituto di Geoscienze e Georisorse, Pavia, Italy Dipartimento di Scienze della Terra e dell Ambiente, Pavia, Italy 2 ISO4 s.n.c., Torino, Italy 3 Dipartimento Scienze Ambientali, Parma, Italy In agricultural watersheds, the management of nitrate contamination in rivers requires the understanding of the existing relationships between soil, groundwater and surface water. The reported data correspond to three sampling campaigns, conducted in different seasons on surface water in a Nitrate Vulnerable Zone of Lombardy Northern Italy . The Oglio River, its tributaries, one spring, and effluents from wastewater treatment plants were sampled to determine N content, speciation and nitrate isotopes. The nitrate content increased along the Oglio River, mostly due to groundwater inputs. In summer, nitrate tended to decrease at the downstream reach, whilst this trend was not clear in autumn and winter campaigns. In summertime chemical and isotopic data suggest the presence of weak denitrification in the Oglio riverbed. Chemical, isotopic data and flow measurements allow the definition of the N fluxes and identification of sources and processes affecting the nitrate concentration in the river. Proceedings of the International Symposium Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies. 978 92 0 135610 9 http //www pub.iaea.org/books/iaeabooks/8890/Isotopes in Hydrology Marine Ecosystems Capitolo Evaluation of nitrate sources and transformation in the Oglio river watershed 2013_A1_005.pdf Contributo in volume elisasacchi SACCHI ELISA carloandrea.delconte DELCONTE CARLO ANDREA TA.P04.014.002 Metodologie integrate per la conoscenza di processi e materiali geologici e del loro impatto sull uomo e l ambiente |