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| Rankinen, Katri; Palojärvi, Ansa; Regina, Kristiina; Pietola, Liisa; Granlund, Kirsti; Uusi-Kämppä, Jaana. |
| The retention of nutrients by 10-m-wide grass buffers and buffers under natural vegetation has been studied over 10 years in Jokioinen in southwestern Finland. The results have been compared with those from 70-m-long plots without buffers. Grass was sown on the adjacent field and plots without buffers in 2002, and the field plots and these were grazed for 12 and 24 days in summer 2003 and 2004, respectively. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Environmental aspects. |
| Ano: 2006 |
URL: http://orgprints.org/16261/1/pollutants3.pdf |
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| Rankinen, Katri; Salo, Tapio; Granlund, Kirsti; Rita, Hannu. |
| Nitrogen (N) gross balance is one of the indicators designed for following developments in agriculture in the European Union. A nutrient surplus occurs when the quantity of a nutrient applied in fertilizers is greater than that removed during harvest. In this study the usefulness of N balance in studying the fate of N and controlling N leaching from agricultural fields in south-western Finland was evaluated. To estimate N leaching in 2000–2005 the mathematical, process-based model COUP was applied to twelve fields representing four agricultural production sectors. The fields represented conventional cereal production, organic cereal production and both conventional cattle and pig husbandry. Simulated N leaching was lowest from cereal production fields with... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 2007 |
URL: http://orgprints.org/16899/1/rankinen.pdf |
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| Ekholm, Petri; Granlund, Kirsti; Kauppila, Pirkko; Mitikka, Sari; Niemi, Jorma; Rankinen, Katri; Räike, Antti; Räsänen, Johanna. |
| In Finland, the first large-scale efforts to control nutrient loading from agriculture got under way with the introduction of the EU Agri-Environmental Program in 1995. We examined whether these efforts have decreased agricultural nutrient losses and improved the quality of receiving waters. To do so we used monitoring data on fluxes of nutrients and total suspended solids in agricultural catchments in 1990–2004 and on the water quality of agriculturally loaded rivers, lakes and estuaries in 1990–2005. No clear reduction in loading or improvement in water quality was detected. Hydrological fluctuations do not seem to have eclipsed the effects of the measures taken, since there was no systematic pattern in runoff in the period studied. The apparent... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 2007 |
URL: http://orgprints.org/16900/1/ekholm.pdf |
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| Mitikka, Sari; Britschgi, Ritva; Granlund, Kirsti; Grönroos, Juha; Kauppila, Pirkko; Mäkinen, Risto; Niemi, Jorma; Pyykkönen, Sonja; Raateland, Arjen; Silvo, Kimmo. |
| There are several factors that affect nitrate concentrations in natural waters. Firstly, sector of production (crop cultivation, animal husbandry), and short term and long term measures in agriculture affect the amount of nitrogen loading. In Finland the number of farms has declined significantly since the early 1990s.However, the area under cultivation has not been reduced. The portion of the farms with livestock went down by 10 % from 1995 to 2002. Studies on manure storage have shown that storages that are in use do not cause harmful environmental effects. |
| Tipo: Report |
Palavras-chave: Air and water emissions. |
| Ano: 2005 |
URL: http://orgprints.org/16401/1/nitrate.pdf |
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