Nutrient export from the Po and Adige river basins over the last 20 years
Available data on nutrient concentration and flow of the Po and Adige (Italy) river waters were analyzed in order to evaluate the nitrogen and phosphorus load carried into the Adriatic Sea, as well as the changes that have occurred since 1968. Load data results were highly correlated with the flow,...
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| Main Authors: | , , |
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| Format: | Book |
| Language: | eng |
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| Online Access: | Get full text |
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| Summary: | Available data on nutrient concentration and flow of the Po and Adige (Italy) river waters were analyzed in order to evaluate the nitrogen and phosphorus load carried into the Adriatic Sea, as well as the changes that have occurred since 1968. Load data results were highly correlated with the flow, following relations of the linear type. The yearly mean loads amounts to 13,000 t of total P and 110,000 t of total mineral N for the Po, and 1200 t and 13,000 t respectively for the Adige. These values are more than two times higher than those evaluated in 1968. Nitrogen increased quite regularly, while the phosphorus load had already reached its maximum value at the end of the 1970s. Nutrient increase during 1968-88 can be explained by a higher production of detergents and fertilizers, and the constructions of numerous sewer networks in the Po and Adige basins. |
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| ISSN: | 0048-9697 1879-1026 |