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| Rasa, Kimmo; Räty, Mari; Nikolenko, Olga; Horn, Rainer; Yli-Halla, Markku; Uusi-Kämppä, Jaana; Pietola, Liisa. |
| Water repellency index R was measured in a heavy clay and a sandy loam, used as arable land or buffer zone (BZ). Further, effect of management practise and ageing of BZs were studied. Water repellency was proved to be a common phenomenon on these soils. Harvesting and grazing increased water repellency as does ageing.Low water repellency is supposed to prevent preferential flows and provide evenly distributed water infiltration pattern through large soil volume, which favours nutrient retention. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Environmental aspects. |
| Ano: 2006 |
URL: http://orgprints.org/16280/1/pollutants6.pdf |
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| Räty, Mari; Horn, Rainer; Rasa, Kimmo; Yli-Halla, Markku; Pietola, Liisa. |
| Soil structure that favours infiltration is essential for successful functioning of vegetated buffer zones. We measured bulk density, air permeability and precompression stress in a clay soil (Vertic Cambisol) and a sandy loam (Haplic Regosol) in Finland, to identify management-related changes in the physical and mechanical properties in the surface soil of buffer zones. In addition, the impact of texture on these properties was studied at depths down to 180?200 cm. Soil cores (240 cm3) were sampled from a cultivated field, from buffer zones harvested by grazing (only in a clay soil) or by cutting and removing the vegetation, and from buffer zones covered with natural grass vegetation. The samples were equilibrated at a matric potential of -6 kPa and... |
| Tipo: Journal paper |
Palavras-chave: Soil. |
| Ano: 2010 |
URL: http://orgprints.org/17183/1/r%C3%A4ty.pdf |
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| Norrdahl, Kai; Martel, Jocelyn; Pöyri, Ville; Uusi-Kämppä, Jaana; Yli-Halla, Markku; Lempa, Kyösti; Suomela, Janne; Virtanen, Risto. |
| Trees and shrubs are potential components for construction of buffer zones, especially for reducing phosphorus levels in soil. Woody species appear to be less efficient in capturing nutrients from overland flow, at least outside the growing season. Tree seedlings prevent effective mowing and removal of hay, which may lead to an accumulation of dead hay on the zone. Therefore woody species should mainly be used in places where yearly mowing and removal of hay is not feasible. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2005 |
URL: http://orgprints.org/16057/1/wetlands2.pdf |
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| Uusi-Kämppä, Jaana; Turtola, Eila; Regina, Kristiina; Ylivainio, Kari; Österholm, Peter; Yli-Halla, Markku; Virtanen, Seija; Nuotio, Eeva. |
| Project: Climate change adaptation tools for environmental risk mitigation of acid sulphate soils (CATERMASS) Funding: Life+ Environment policy and governance 2008-C1 Coordinator: Finnish Environment Institute (SYKE) Partners: Geological Survey of Finland (GTK), MTT Agrifood Research Finland, Finnish Game and Fisheries Research Institute (RKTL), Centre for Economic Development, Transport and the Environment, University of Helsinki, Åbo Academi University Action 3: Mitigation methods and their adaptation to changing climate conditions |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Environmental aspects. |
| Ano: 2011 |
URL: http://orgprints.org/19575/1/Uusikamppa.pdf |
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| Jaakkola, Antti; Yli-Halla, Markku. |
| Over thirty years a significant depletion of P and K in soil occured when the were not given in fertilizers. This caused a reduction in crop yield. An abundant P application exceeding the crop uptake very clearly prevented the yield reduction but did not raise the extractable P concentration in the soil. Severe K deficiency did not start to appear until 20 years of growing cereal without fertilizer K. K application compensating for the uptake by the crop did not prevent the decrease of its extractable concentration in this soil, but this decrease did not affect crop yield. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover. |
| Ano: 2008 |
URL: http://orgprints.org/15806/1/longterm.pdf |
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