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| Registros recuperados: 138 | |
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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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| Sundberg, C.; Kimming, M.; Nordberg, Å.; Baky, A.; Hansson, P.-A.. |
| Organic agriculture is dependent on fossil fuels, just like conventional agriculture, but this can be reduced by the use of on-farm biomass resources. The energy efficiency and environmental impacts of different alternatives can be assessed by life cycle assessment (LCA), which we have done in this project. Swedish organic milk production can become self-sufficient in energy by using renewable sources available on the farm, with biogas from manure as the main energy source. Thereby greenhouse gas (GHG) emissions from the production system can be reduced, both by substituting fossil fuels and by reducing methane emissions from manure. The arable organic farm studied in the project could be self-sufficient in energy by using the residues available in the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Recycling; Balancing and resource management Environmental aspects. |
| Ano: 2013 |
URL: http://orgprints.org/24559/1/24559.pdf |
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| Ingemann, Jan Holm. |
| The World Commission (1987) pointed out that sustainable development in general is a prerequisite to alleviate fatal threats to human future. In this note1 it is stated that it is necessary to return to basic concepts and reflections to ensure that the aim, means, and context are remembered when radical changes to gain sustainability are designed. In particular this is the case when humanity’s social interplay (i.e., technology) with natural life support systems is in focus. Thus, the note is founded on a restatement of basics linked to the essential challenge facing post-industrial societies. In that light it is revealed that the current reactions to the challenge are insufficient because sustainability implies radical rather than marginal changes and... |
| Tipo: Report chapter |
Palavras-chave: Recycling; Balancing and resource management. |
| Ano: 2002 |
URL: http://orgprints.org/1575/1/Rural_urban.pdf |
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| Magid, Jakob; Rasmussen, Lasse Dam; Moeller, Jacob. |
| The experiments show that composting of GM plant residues greatly increases the rate of degradation of transgenic DNA compared to the rate for plant residues left in the soil. If the persistence of transgenic DNA in the environments is considered as the only risk factor, composting is a 'DNA-safe' method to treat GM plant residues. However, even though transgenic plant DNA was not detected in bacterial isolates in our experiments, we cannot conclude that horizontal gene transfer can not take place. The 300 isolates tested proved to be too low a number to be conclusive. The numbers of isolates tested were based on the screenings indicating high transfer, but the screenings were biased apparently because some Bacillus species gave PCR products matching the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Recycling; Balancing and resource management. |
| Ano: 2004 |
URL: http://orgprints.org/3622/1/3622.pdf |
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| Koppelmäki, Kari; Hagolani-Albov, Sophia; Parviainen, Tuure; Virkkunen, Elina; Helenius, Juha. |
| Agroecological symbiosis (AES) enhances productivity in agriculture. A case study of the first AES in Finland indicated that productivity of on the organic crop farm could be increased by producing biogas from green manure leys, fallows, and other locally available biomasses. At the same time, the farm became a net-energy producer instead of being an energy consumer. Combining the food processing, crop production, energy production and closer interaction with consumers increase the overall sustainability of the local food system |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Recycling; Balancing and resource management Social aspects Air and water emissions Networks and ownership Farm nutrient management. |
| Ano: 2017 |
URL: http://orgprints.org/31439/1/Koppelm%C3%A4ki_NJF_2017_495_AES_fin.docx |
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| Hauggaard-Nielsen, Henrik. |
| Bioenergi betragtes som en af de bedste muligheder for på kort sigt at substituere fossile brændsler og reducere udledning af de menneskeskabte drivhusgasser. Det forventes, at landbrugssektoren vil komme til at spille en stadig større rolle for forsyning af samfundets med biomasseressourcer til disse formål. Biobrændstoffer, fremstillet ud fra hele eller dele af diverse landbrugsafgrøder og -biprodukter kan være direkte erstatningsprodukter for transportsektorens nuværende forbrug af fossile brændstoffer. Priserne på konventionelle fossile brændstoffer (f.eks. benzin og dieselolie) er op til tredoblet inden for de seneste 4 år. Forsyningssikkerheden med hensyn til brændstoffer spiller også en stadig større rolle i europæisk og international politik.... |
| Tipo: Teaching resource |
Palavras-chave: Recycling; Balancing and resource management Biodiversity and ecosystem services Farm nutrient management. |
| Ano: 2007 |
URL: http://orgprints.org/18973/4/18973.pdf |
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| Råberg, T.; Kreuger, E.; Björnsson, L.; Jensen, E.S.. |
| This project investigates strategic management of nitrogen by integrating crop residue management with biogas production. The approach offers potential for diversified farmer income, as food crops, feedstock for biogas and digestate for nutrient cycling are produced simultaneously. This type of diversification provides multifunctional solutions in organic farming, especially in production without access to animal manure. Biogas production from crop residues offers the possibility of reducing both emissions and leaching of nutrients to the surrounding ecosystems, as compared to the case where crop residue is incorporated into the soil for decomposition (Baggs et al. 2000; Velthof et al. 2002). This type of multifunctional cropping system provides solutions... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Recycling; Balancing and resource management Farm nutrient management. |
| Ano: 2013 |
URL: http://orgprints.org/24556/1/24556.pdf |
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| Nascimento, Alexandre Ferreira do. |
| Muitos sistemas de produção contam basicamente com os nutrientes provenientes da decomposição de materiais orgãnicos adicionados ao solo. A taxa de decomposição desses materiais é produto da combinação de fatores intrinsecos, sua composição quimica e bioquímica, e fatores extrínsecos, sendo as condições de temperatura e umidade do local as variáveis mais importantes, constituindo assim em um processo complexo e dinâmico por ser controlado por vários fatores. Contudo, a decomposição pode ser representada e examinada dentro de esquemas e mecanismos que facilitam seu entendimento, os modelos matemáticos. Dessa forma, o objetivo deste trabalho foi calibrar e validar os modelos Centry, APSIM e NDICEA para decomposição e liberação de N em condições climáticas... |
| Tipo: Thesis |
Palavras-chave: Recycling; Balancing and resource management Specific methods. |
| Ano: 2008 |
URL: http://orgprints.org/21844/1/Nascimento_Calibracao.pdf |
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| Hansen, Martin N.; Birkmose, Torkild; Mortensen, Børge; Skaaning, Kent. |
| Risikoen for ammoniaktab under lagring er højere for bioforgasset og separeret gylle, men effektiv overdækning af gyllelagre begrænser effektivt tabet. Med et effektivt flydelag er tabet ens for behandlet og ubehandlet gylle. Bioforgasning og separering af gylle begrænser ammoniaktabet i forbindelse med gyllens udbringning, effekten er højst af separering. Bioforgasning og separering af gylle fører ikke til mærkbar begrænsning af lugtgener fra gyllelagre, lugtgenerne kan dog effektivt begrænses ved effektiv overdækning af lagre. Lugtgenerne i forbindelse med udbringning af gylle er lavere ved udbringning af bioforgasset og separeret gylle end ved udbringning af ubehandlet gylle. Bioforgasset gylle og separeret gylle giver en højere kvælstofudnyttelse end... |
| Tipo: Report |
Palavras-chave: Recycling; Balancing and resource management Composting and manuring. |
| Ano: 2004 |
URL: http://orgprints.org/3517/1/3517.pdf |
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| Geier, Vanessa; Meier, Matthias; Köpke, Ulrich. |
| During the last years the demand and use of Life Cycle Assessment (LCA) for calculating and comparing the ecological impacts of agricultural products has increased. However, within LCA important environmental impacts of agriculture, for instance biodiversity, soil quality or animal welfare are considered inadequately or stay unaccounted. In the case of biodiversity agriculture is considered as the main driver for the worldwide biodiversity loss. Thus, biodiversity cannot be neglected in future agricultural LCAs. Even though there is no widely accepted approach yet, a lot of research has been undertaken to solve the question how biodiversity can be assessed in the LCA framework. Within a literature review eleven studies with biodiversity assessment... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Recycling; Balancing and resource management Biodiversity and ecosystem services. |
| Ano: 2013 |
URL: http://orgprints.org/21647/1/21647_geier.pdf |
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| I de seneste årtier har der været fokus på at reducere jordbrugets forurening med næringsstoffer og syntetiske pesticider. Tabet af specielt kvælstof til vandmiljøet har ført til omfattende iltsvind i de indre farvande samt en forringelse af kvaliteten af grundvand. Tilsvarende har anvendelsen af pesticider ført til forurening af grundvand, mistanke om skadevirkninger på mennesker og husdyr samt en generel forarming af naturindholdet i agerlandet, herunder bekymring for en række plante- og dyrearter som påvirkes direkte eller indirekte. Bl.a. som et svar på disse problemer er økologisk jordbrug udviklet som et system, der tilstræber at minimere ressourceforbruget og miljøbelastningen gennem udnyttelse af lokale ressourcer og naturlige... |
| Tipo: Report |
Palavras-chave: Recycling; Balancing and resource management Soil. |
| Ano: 1999 |
URL: http://orgprints.org/251/1/Rap_03.pdf |
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| Dobelmann, Jan Kai; Böttger, Gunnar. |
| Hintergrund der Veranstaltung Gerade in der ökologischen Landwirtschaft ist Energie ein sehr wichtiger Faktor. Wegen der langfristigen Bedeutung dieses Themas wurde daher von sesolutions in Zusammenarbeit mit der Deutschen Gesellschaft für Sonnenenergie e.V. ein Themennetzwerk Energie im ökologischen Landbau initiiert, das die aktuellen Möglichkeiten einer umweltbewussten Energieversorgung für den ökologischen Landbau aufarbeiten soll. Vom Bundesprogramm Ökologischer Landbau gefördert, wurden über das Netzwerk drei Workshops organisiert: Bei dem ersten Workshop auf der Internationalen Garten Ausstellung in Rostock wurde das Thema Energieberatung in der ökologischen Landwirtschaft behandelt. Inhalte waren die Gestaltung der Energieversorgung,... |
| Tipo: Project description |
Palavras-chave: Recycling; Balancing and resource management Farm economics. |
| Ano: 2004 |
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| Escobar, C.A.; Espinosa, A.; Malagon, R.; Zuluaga, A.. |
| The lack of specific methodologies to evaluate and monitor the impact of agricultural activities on the-biotic, abiotic and socio-economic environment constitutes a technical - scientific barrier for the development and improvement of Organic Agriculture in Colombia. The proposed methodology consists of: Step 1: Gathering of information on the organic production system by means of surveys and interviews with farmers. Step 2: Characterisation and description of the production system. Step 3: Qualification and quantification of the production system. Step 4: Identification and evaluation of environmental quality indicators and creation of diagrams Step 5: Interpretation of results. This proposal is a first approach for a complete evaluation... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Recycling; Balancing and resource management. |
| Ano: 2005 |
URL: http://orgprints.org/4339/4/Escobar_etal_4p_revised%2Ded.doc |
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| Registros recuperados: 138 | |
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