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Registros recuperados: 11
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A study of the N2O emission from grassland with the FASSET farm model Organic Eprints
Chatskikh, Dmitri; Olesen, Jørgen E.; Berntsen, Jørgen; Regina, Kristiina; Yamulki, Sirwan.
Local adaptations of the IPCC methodology (http://www.ipcc.ch) are applied in different countries. They include a combination of theoretical, experimental and simulation methods for evaluating the activity and factors indicated N2O emission. The N2O emission from agricultural soil is considered an important source both for environmental impact and non-industrial losses of nitrogen (Petersen, Olesen, 2002). In this study a multifactorial approach, based on dynamic modelling, is used at a farm/field level to estimate N2O emission from grassland. For this purpose an algorithm for modeling of gaseous N2O emission was developed and analyzed. In the algorithm, based on the conceptual process-oriented model HIP (Davidson et al., 2000), both nitrification and...
Tipo: Conference paper, poster, etc. Palavras-chave: Air and water emissions.
Ano: 2003 URL: http://orgprints.org/4130/1/4130.doc
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Adaptation measures of Finnish agriculture to climate change Organic Eprints
Hakala, Kaija; Regina, Kristiina; Kaukoranta, Timo.
MTT Agrifood Research Finland is to launch in 2006-2007 a new project aimed at stimulating measures to adapt to climate warming in the North. The program will consist of different projects carried out together with both national and international partners, and funded by several organizations.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop husbandry.
Ano: 2005 URL: http://orgprints.org/17113/1/hakala.pdf
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Buffer strips as filters for nutrients from grazed lands and nutrient cycling on the buffer strips Organic Eprints
Uusi-Kämppä, Jaana; Granlund, Kirsti; Palojärvi, Ansa; Rankinen, Katri; Regina, Kristiina; Valkama, Anna-Mari.
The retention of agricultural nitrogen and phosphorus by 10-m-wide grass buffer strips and buffers under natural vegetation has been studied for ten years on an experimental field at Jokioinen.
Tipo: Conference paper, poster, etc. Palavras-chave: Air and water emissions.
Ano: 2003 URL: http://orgprints.org/11269/1/NJF.pdf
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Development of the ammonia emission inventory in Finland : revised model for agriculture Organic Eprints
Grönroos, Juha; Mattila, Pasi; Regina, Kristiina; Nousiainen, Jouni; Perälä, Paula; Saarinen, Kristina; Mikkola-Pusa, Johanna.
Ammonia emissions in Finland have remained static in recent years and no big changes can be expected in the future as long as there are no drastic alterations in animal production. Similar to ammonia, the emissisons of nitrous oxide depend on the extent of agricultural production. For nitrous oxide the use of mineral fertilizer nitrogen is crucial, because it is the main source of the emissions. The ammonia emission factors obtained with the revised model are compared with emission factors from some other sources.
Tipo: Report Palavras-chave: Air and water emissions.
Ano: 2009 URL: http://orgprints.org/16399/1/ammonia.pdf
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Digested slurry as a fertilizer for biogas ley Organic Eprints
Kapuinen, Petri; Perälä, Paula; Regina, Kristiina.
Digested slurry injected produces in this case comparable yields with mineral fertiliser. Because the primary growth is the largest and of the best quality it should be used for feed as the first option. The re-growths could then be used as a co-substrate in biogas reactors. Digested slurry is a good fertiliser for leys when injected. Injection of non-digested slurry reduces the ammonia emissions and leaching of soluble phosphorus but the significance of the low performance of nitrogen leaves open its fate.
Tipo: Conference paper, poster, etc. Palavras-chave: Composting and manuring.
Ano: 2007 URL: http://orgprints.org/15104/1/bioenergia.pdf
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Effect of persistent subsoil compaction on N2O emissions from arable soils Organic Eprints
Regina, Kristiina; Simojoki, Asko; Alakukku, Laura; Silvennoinen, Hanna; Dörsch, Peter; Keller, Thomas.
Compaction occasionally increased N2O in soil air. No large differences in soil air composition, N2O emissions or moisture content were found between the treatments. The N2O concentrations at 15, 30, 50 and 70 cm depths correlated positively with the emission of N2O from the soil in both fields (r=0.4-0.7***). The subsoil O2 concentrations correlated negatively with N2O emission, but only at the Finnish site. The results suggest that subsoil compaction does not significantly increase N2O emissions from these soils 15-30 years after compaction. This may indicate a minor role of subsoil in the production of N2O compared with topsoil.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil.
Ano: 2011 URL: http://orgprints.org/19576/1/Regina.pdf
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Influence of slurry and mineral fertiliser application technique on N2O and CH4 fluxes from a barley field Organic Eprints
Perälä, Paula; Kapuinen, Petri; Esala, Martti; Tyynelä, Sanna; Regina, Kristiina.
The effect of different fertilizer application techniques on nitrous oxide and methane emissions were investigated in a field experiment. Gas fluxes were measured during a five months period in 2001 from a barley field located in Vihti, southern Finland. The effects of different fertilizer application techniques on crop yield and quality were also investigated. According to the results, slurry injection produced the most N2O during the measurement period. Placement of mineral fertilizer produced least N2O. Methane fluxes were close to zero and there were no statistically significant differences between the treatments.
Tipo: Conference paper, poster, etc. Palavras-chave: Air and water emissions; Composting and manuring.
Ano: 2005 URL: http://orgprints.org/8460/1/njf1.pdf
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Influence of slurry and mineral fertiliser application technique on N2O and CH4 fluxes from a barley field Organic Eprints
Perälä, Paula; Kapuinen, Petri; Esala, Martti; Tyynelä, Sanna; Regina, Kristiina.
In this study, the effects of different application techniques on emissions of nitrous oxide and methane from a barley field were compared.
Tipo: Conference paper, poster, etc. Palavras-chave: Air and water emissions.
Ano: 2005 URL: http://orgprints.org/8464/1/njf1.pdf
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Mitigation of greenhouse gas fluxes from cultivated organic soils by raised water table Organic Eprints
Regina, Kristiina.
Cultivated organic soils are a remarkable source of greenhouse gases (GHG) in some countries and raised ground water table has been suggested as a mitigation measure on these soils. Drainage of the peat increases mineralization of the organic matter and causes high emissions of carbon dioxide (CO2) and nitrous oxide (N2O) while emissions of methane (CH4) are lowered compared to pristine peatlands. In countries with a large area of organic soils these GHG emissions can be remarkable. In Finland, the area of cultivated organic soils is 12% of the agricultural area but they cause 30% of the N2O emissions of agricultural soils reported under the Climate Convention of the UNFCCC. Organic croplands are also the largest single emission source of CO2 among the...
Tipo: Conference paper, poster, etc. Palavras-chave: Soil.
Ano: 2010 URL: http://orgprints.org/17293/1/Regina.doc
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Modelling of water balance and nitrogen cycle in vegetative filter strips Organic Eprints
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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Tools for environmental risk mitigation of acid sulphate soils Organic Eprints
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
Registros recuperados: 11
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