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| Registros recuperados: 20 | |
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| Olesen, Jørgen Eivind. |
| Produktion og forbrug af fødevarer er ansvarlig for et betydeligt bidrag til de globale udslip af driv-husgasser. Udslippene skyldes direkte udledninger af drivhusgasserne metan (CH4) og lattergas (N2O) i forbindelse med produktionen. Disse drivhusgasser har henholdsvis 21 og 310 gange krafti-gere drivhuseffekt end CO2. Drøvtyggernes fordøjelse er den største enkeltkilde til metan udled-ning, desuden kommer der metan fra gødningslagrene. Lattergas dannes, når kvælstof omdannes ved mikrobielle processer i jorden. Derfor øges udslippet af lattergas, når jorden tilføres kvælstof-gødninger. Landbruget har endvidere et energiforbrug (direkte og indirekte), som også bidrager til udledning af CO2. |
| Tipo: Report chapter |
Palavras-chave: Recycling; Balancing and resource management Air and water emissions. |
| Ano: 2010 |
URL: http://orgprints.org/18507/1/18507.pdf |
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| Olesen, Jørgen E.. |
| Klimaændringer er uden tvivl en af de største udfordringer menneskeheden har stået over for. Det skyldes ikke mindst de enorme konsekvenser, som klimaændringerne vil have for verdens økosystemer og for vore levevilkår. I det politiske liv tales ofte om at undgå farlige klimaændringer. Hvad der er farligt er jo en politisk beslutning, hvorimod det er op til forskningen at fremlægge dokumentation for de konsekvenser forskellig grader af klimaændringer vil have. EU har defineret at det drejer sig om at undgå klimaændringer, der overstiger 2 grader i global middeltemperatur over førindustrielt niveau, og denne målsætning er på det seneste tiltrådt af G8 landene. |
| Tipo: Report chapter |
Palavras-chave: Recycling; Balancing and resource management Air and water emissions. |
| Ano: 2009 |
URL: http://orgprints.org/27481/7/27481.pdf |
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| Nemecek, T; Dubois, D; Huguenin-Elie, O; Gaillard, G. |
| The impacts of organic and integrated farming systems in Switzerland on the environment have been assessed in a comprehensive study by the life cycle assessment method. This paper reports a comparison of the treatments of the DOC experiment. Organic farming showed clear ecological advantages particularly for eco- and human toxicity, resource use and biodiversity. These ecological advantages only partly apply to nutrient losses and are not always found for single products. Per kg of organic product, higher impacts were often found for global warming potential, ozone formation, eutrophication and acidification compared to integrated production. In the same crop rotation with the same amount of organic fertilisers there were no systematic differences in soil... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Quality and evaluation of inputs Farm nutrient management Biodiversity and ecosystem services Crop husbandry Recycling; Balancing and resource management Air and water emissions. |
| Ano: 2006 |
URL: http://orgprints.org/10157/1/Life_cycle_assessment_of_Swiss_organic_farming_systems.pdf |
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| Mit dem Projekt wird der wissenschaftliche Sachstand eines gewässerschonenden Ökologischen Landbaus in Wissenschaft, Beratung und Praxis aufgearbeitet. Die grundlegenden Zusammenhänge zwischen Landnutzung und Gewässerqualität werden dargestellt. Klar verständlich und anschaulich ausgearbeitet werden die im Ökologischen Landbau praxisgerechten und gewässerverträglichen Strategien, Konzepte und Maßnahmen einer weitestgehenden Reduzierung oder Vermeidung von Nitratausträgen und weiteren Stoffbelastungen. Der zu erarbeitende Leitfaden und die zugehörige Foliensammlung werden eine aktuelle und belastbare Grundlage für die Wissensvermittlung bilden und die Verbreitung praxisorientierter Lösungen ermöglichen. Mit der standortangepaßten Ausrichtung der... |
| Tipo: Project description |
Palavras-chave: Nutrient turnover Crop combinations and interactions Recycling; Balancing and resource management Air and water emissions. |
| Ano: 2023 |
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| Kvande, Ingvar; Cabell, Joshua; Stensgård, Aina Elstad; Saxegård, Simon; Morken, John. |
| Smøla Klekkeri og Settefisk AS klekker yngel og forer fram settefisk. På grunn av en begrenset vannressurs bygde de et av de første resirkulerings-anleggene (RAS – recirculating aquaculture systems) i Norge. Fra og med 2013 har de i samarbeid med Biotek, senere Biotek Sterner og nå Sterner de utviklet et biogassanlegg som kan håndtere rent fiskeslam. Hovedmotivasjonen for bygging av et slikt anlegg har vært å oppfylle myndighetenes krav på 50 % reduksjon i innholdet av partikulært materiale. Man har i tillegg sett på muligheten for utnyttelse av gassen for å dekke egne energibehov. Basert på anlegget på Smøla har Sterner Biotek valgt å kommersialisere teknologien og har bygd et anlegg som er 7 ganger større enn det på Smøla for Cermaq Norway AS, avd.... |
| Tipo: Report |
Palavras-chave: Recycling; Balancing and resource management Air and water emissions. |
| Ano: 2018 |
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| Færge, Jens; Magid, Jakob; de Vries, Fritz Pennig. |
| To enhance agricultural sustainability, former linkages between agriculture and urban waste production should be reintroduced. Therefore, to explore the options for recycling of nutrients from mega-cities, a nutrient balance model was developed. The parameterization were established for the Bangkok Province and considers nitrogen (N) and phosphorous (P). To model the food supply, an online database (FAOSTAT) estimating supply at country levels, was employed. It is argued that desaggregation to urban level is reasonable after adjustments for different economy in Bangkok than the average in Thailand. The balance shows that only a small fraction of nutrients are recovered, currently about 7 and 12% respectively, of the amount of N and P in the total food... |
| Tipo: Journal paper |
Palavras-chave: "Organics" in general Recycling; Balancing and resource management Air and water emissions. |
| Ano: 2001 |
URL: http://orgprints.org/190/1/190.pdf |
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| Jensen, Lars Stoumann; Pedersen, Anders; Magid, Jakob; Nielsen, Niels Erik. |
| It is a well-known fact that catch crops have a significant effect on availability and loss of soil inorganic nitrogen (Thorup-Kristensen et al., 2003) and recently marked effects on soil inorganic sulphur dynamics have also been shown (Eriksen and Thorup-Kristensen 2002; Eriksen et al., 2004). However, we know much less about the effect of catch crops on phosphorous (P) and potassium (K) mobilisation and availability for the next crop. After several years of organic cash crop production, e.g. vegetables and cereals, yield levels may gradually be limited by soil P and K availability, depending on the initial status at conversion to organic production principles. This is particularly the case during the establishment phase of certain vegetable cultures... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover Farm nutrient management Recycling; Balancing and resource management Air and water emissions. |
| Ano: 2005 |
URL: http://orgprints.org/6165/1/6165.pdf |
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| Topp, C F E; Watson, C A; Rees, R M; Stockdale, E A. |
| A balanced use of resources within organic farming systems is required to maintain sustainable systems. Hence, it is essential to have tools that can assess the use of resources within the farming system and their impact on the environment. The range of tools that have been developed include those assessing local farm-scale issues together with those that assess impacts at the global scale. At the global scale assessments are usually made on the basis of a unit of product whereas at the local scale assessments can also be made on an area basis. In addition, the tools also assess a variety of issues, e.g. biodiversity, pollution potential, energy and water use. The level of detail required for the different assessment tools differs substantially;... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Environmental aspects Production systems Production systems Recycling; Balancing and resource management Air and water emissions. |
| Ano: 2006 |
URL: http://orgprints.org/10162/1/Energy_and_environmental_burdens_of_organic_and_non%2Dorganic_agriculture_and_horticulture.pdf |
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| Registros recuperados: 20 | |
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