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| Registros recuperados: 27 | |
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| Dalgaard, Tommy; Halberg, Niels; Fenger, Jes. |
| Formålet med rapporten er at beskrive og anvende en metode til at vurdere ændringen i landbrugets forbrug af fossil energi og emission af drivhusgasser ved omlægning til 100% økologisk jordbrug i Danmark. Situationen for dansk landbrug i 1996 er sammenlignet med tre scenarier for 100% omlægning: A) Fuld selvforsyning med foder (0% import). Herved begrænses den mulige svineproduktion. B) 15% import af foder til drøvtyggere og 25% import til enmavede dyr (15-25% import). Også her begrænses svineproduktionen, men dog mindre en i scenario A. C) Fastholdelse af den samme animalske produktion som i 1996 (ubegrænset foderimport). |
| Tipo: Report |
Palavras-chave: Air and water emissions. |
| Ano: 2000 |
URL: http://orgprints.org/3031/1/Rap_05.pdf |
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| Andersen, Liselotte Wesley; Marchi, Chiara; Strandberg, Beate; Topping, C.J.; Pedersen Bruus, Marianne; Damgaard, Christian F.; Jensen Secher, Thomas; Olsen, Kent; Dalgaard, Tommy; Bøcher Klit, Peder. |
| Oplæg til afsluttende workshop omkring Darcof III. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Biodiversity and ecosystem services. |
| Ano: 2010 |
URL: http://orgprints.org/19055/4/19055.pdf |
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| Andersen, Liselotte Wesley; Marchi, Chiara; Strandberg, Beate; Damgaard, Christian; Pedersen Bruus, Marianne; Jensen Secher, Thomas; Olsen, Kent; Dalgaard, Tommy; Bøcher Klit, Peder; Topping, C.J.. |
| Presentation of the results of Refugia to the ICROFS programme commitee in Silkeborg |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Biodiversity and ecosystem services. |
| Ano: 2010 |
URL: http://orgprints.org/19054/4/19054.pdf |
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| Dalgaard, Tommy; Jørgensen, Uffe; Kristensen, I.T.; Gylling, M.; Dejgaard, J.; Dubgaard, Alex; Kjeldsen, Chris; Hermansen, J.E.; Turner, K.G.; Christen, Ben; Andersen, P.S.. |
| This study presents a new approach to model the biophysical potentials for increased biomass harvest in Denmark, and a multi-criteria sustainability assessment of the socio-economic and environmental effects of different scenarios for such increased production and new biobased economy in rural landscapes. Thereby the results serve as input to the ongoing productivism – post-productivism debate related to rural spaces in Europe. Empirical results from a case study of large scale conversion to biorefenery technologies, aiming to increase the total Danish harvest of biomass by 10 million tonnes via the conversion to new types of crop production and land management, is used as an example, and will be related to the common conceptual model presented by the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm economics; Technology assessment; Social aspects; Farm nutrient management; Regulation. |
| Ano: 2012 |
URL: http://orgprints.org/21222/4/21222.pdf |
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| Christen, Ben; Dalgaard, Tommy. |
| In addition to their potential for biomass production, buffer strips on agricultural land have been shown to protect surface water quality by reducing erosion and nutrient leaching, and can play a key role in nature and flood protection, and the design of bioenergy landscapes resilient to climate changes, and the environmental pressures from intensive agriculture. Use of conservation buffers by farmers outside of designated schemes is very limited to date, but the increasing demand for bioenergy and the combination of agricultural production with nature protection calls for a much wider implementation. This paper reviews the knowledge on buffer functioning, socioeconomics and practical farming aspects. It describes how a defined three-zone buffer design,... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services; Landscape and recreation; Farm nutrient management. |
| Ano: 2013 |
URL: http://orgprints.org/18937/4/18937.pdf |
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| Halberg, Niels; Refsgaard, Karen; Dalgaard, Tommy. |
| Energiforbruget i jordbrugsproduktionen er interessant både fra et ressource synspunkt og fordi udledningen af CO2 fra forbrænding af fossil energi bidrager til drivhuseffekten. Både i målsætningerne for den danske Landsforening for økologisk jordbrug (LØJ) og i landboorganisationernes oplæg til Godt landmandsskab år 2000 indgår desuden mål om at reducere forbruget af fossil energi og få den bedst mulige energiudnyttelse. Ved en kombination af studier i økologiske og konventionelle kvægbrug og brug af standardværdier for dieselforbrug til de enkelte markoperationer er der opstillet modeller for energiforbruget i mark og stald. I energiregnskaberne indgår både det direkte (diesel + el) og det indirekte energiforbrug (f.eks. energi medgået til produktion af... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems Recycling; Balancing and resource management. |
| Ano: 1999 |
URL: http://orgprints.org/6554/1/6554.pdf |
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| Langer, Vibeke; Dalgaard, Tommy; Mogensen, Lisbeth; Heidmann, Tove; Elmegaard, Niels; Odderskær, Peter; Hasler, Berit. |
| I det seneste tiår har økologisk landbrug fået en stærkt øget udbredelse. Hvor der i begyndelsen af 1990'erne kun var få tusinde ha, som blev drevet økologisk, er der i 2001 over 170.000 ha, svarende til ca. 6,5 procent af det samlede danske landbrugsareal. Den samfundsmæssige interesse i økologisk landbrug er i høj grad drevet af de positive virkninger på natur og miljø, som det økologiske landbrug formodes at have. Samtidig har de samfundsøkonomiske effekter ved en øget udbredelse af økologisk landbrug været diskuteret. Bl.a. på denne baggrund blev der i regi af Forskningscenter for Økologisk Jordbrug iværksat et forskningsprojekt om Samfunds- og miljømæssige konsekvenser af forskellige strategier for udvikling og udbredelse af økologiske... |
| Tipo: Report |
Palavras-chave: "Organics" in general. |
| Ano: 2002 |
URL: http://orgprints.org/3038/1/rap_12.pdf |
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| Dalgaard, Tommy. |
| The organic farming structure has been analysed for all farms in Denmark 2005-2010. In 2005, the average farm size for organic farms was 50 ha, compared to 40 ha for conventional farms. For organic farms the largest average farm size in on sandy soils and for cattle farms, whereas the for conventional farms, the largest farms are on loamy soils, and cash crop, and pig farms. The farms has been classified into farm types accoring to the EUROSTAT methods. Hobby farms are defined with a number of standard working hours under 1871 timer/år (typically under 10-25 ha). These farms normally are not included in national statistics, but are important to include in the REFUGIA studies, because these farms are important for biodiversity and have a relatively higher... |
| Tipo: Working paper |
Palavras-chave: Farm economics; Air and water emissions; Biodiversity and ecosystem services; Landscape and recreation; Denmark; Farm nutrient management. |
| Ano: 2011 |
URL: http://orgprints.org/18941/1/18941.pdf |
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| Andersen, Liselotte Wesley; Marchi, Chiara; Strandberg, Beate; Bruus Pedersen, Marianne; Damgaard, Christian; Jensen, Thomas Secher; Olsen, Kent; Dalgaard, Tommy; Topping, C.J.. |
| • Økologiske marker har mere ukrudtsbiomasse end konventionelle. • Der er flere blomstrende arter i økologiske hegn end konventionelle forudsat, at der er kontinuitet i den økologiske drift. • Der er flere små pattedyr i små økologiske biotoper end konventionelle. • Fjernmålinger fra fly eller satellit, kaldet remote sensing, kan skelne hvilken afgrødetype der dyrkes, samt forekomsten af småbiotoper. • Uanset driftformen er det vigtigt at inddrage naturhensyn i driften, dvs., at der findes ekstensivt drevne arealer (græsmarker, overdrev, enge) til natur og direkte afsatte arealer til natur. |
| Tipo: Other |
Palavras-chave: "Organics" in general; Biodiversity and ecosystem services. |
| Ano: 2010 |
URL: http://orgprints.org/23299/7/23299.pdf |
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| Dalgaard, Tommy; Olesen, Jørgen E.; Petersen, B.M.; Petersen, Søren O.; Jørgensen, Uffe; Kristensen, Troels; Hutchings, Nicholas J.; Gyldenkerne, Steen; Hermansen, J.E.. |
| Greenhouse gas (GHG) emissions from agriculture are a significant contributor to total Danish emissions. Consequently, much effort is currently given to the exploration of potential strategies to reduce agricultural emissions. This paper presents results from a study estimating agricultural GHG emissions in the form of methane, nitrous oxide and carbon dioxide (including carbon sources and sinks, and the impact of energy consumption/bioenergy production) from Danish agriculture in the years 1990-2010. An analysis of possible measures to reduce the GHG emissions indicated that a 50-70% reduction of agricultural emissions by 2050 relative to 1990 is achievable, including mitigation measures in relation to the handling of manure and fertilisers,... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Air and water emissions; Buildings and machinery; Landscape and recreation; Farm nutrient management. |
| Ano: 2011 |
URL: http://orgprints.org/19044/4/19044.pdf |
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| Graef, Frieder; Römbke, Jörg; Binimelis, Rosa; Myhr, Anne Ingeborg; Hilbeck, Angelika; Breckling, Boder; Dalgaard, Tommy; Stachow, Ulrich; Catacora-Vargas, Georgina; Bohn, Thomas; Quist, David; Darvas, Béla; Dudel, Gert; Oehen, Bernadette; Meyer, Hartmut; Henle, Klaus; Wynne, Brian; Metzger, Marc J.; Knäbe, Silvio; Settele, Josef; Székács, András; Wurbs, Angelika; Bernard, Jeannette; Murphy-Bokern, Donal; Buiatti, Marcello; Giovannetti, Manuela; Debeljak, Marko; Andersen, Erling; Paetz, Andreas; Dzeroski, Saso; Tappeser, Beatrix; van Gestel, Cornelis A.M.; Wosniok, Werner; Séralini, Gilles-Eric; Aslaksen, Iulie; Pesch, Roland; Maly, Stanislav; Werner, Armin. |
| The assessment of the impacts of growing genetically modified (GM) crops remains a major political and scientific challenge in Europe. Concerns have been raised by the evidence of adverse and unexpected environmental effects and differing opinions on the outcomes of environmental risk assessments (ERA). The current regulatory system is hampered by insufficiently developed methods for GM crop safety testing and introduction studies. Improvement to the regulatory system needs to address the lack of well designed GM crop monitoring frameworks, professional and financial conflicts of interest within the ERA research and testing community, weaknesses in consideration of stakeholder interests and specific regional conditions, and the lack of comprehensive... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2012 |
URL: http://orgprints.org/23020/1/Graef-etal-2012-BioRisk-Vol7-p73-97.pdf |
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| Dalgaard, Tommy; Hutchings, Nicholas J.; Dragosits, U.; Olesen, J.E.; Kjeldsen, Chris; Drouet, J.L.; Cellier, P.. |
| The aim of this study is to illustrate the importance of farm scale heterogeneity on nitrogen (N) losses in agricultural landscapes. Results are exemplified with a chain of N models calculating farm-N balances and distributing the N-surplus to N-losses (volatilisation, denitrification, leaching) and soil-N accumulation/release in a Danish landscape. Possible non-linearities in upscaling are assessed by comparing average model results based on (i) individual farm level calculations and (ii) averaged inputs at landscape level. Effects of the non-linearities that appear when scaling up from farm to landscape are demonstrated. Especially in relation to ammonia losses the non-linearity between livestock density and N-loss is significant (p > 0.999), with... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions; Landscape and recreation; Farm nutrient management. |
| Ano: 2011 |
URL: http://orgprints.org/19043/4/19043.pdf |
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| Uthes, Sandra; Piorr, Annette; Zander, Peter; Bienkowski, Jerzy; Ungaro, Fabrizio; Dalgaard, Tommy; Stolze, Matthias; Moschitz, Heidrun; Schader, Christian; Happe, Kathrin; Sahrbacher, Amanda; Damgaard, Martin; Toussaint, Verena; Sattler, Claudia; Reinhard, Franz-Josef; Kjeldsen, Chris; Casini, Leonardo; Müller, Klaus. |
| The direct payment system of the Common Agricultural Policy (CAP) provides income transfers to European farmers. Recently, several countries including England and Sweden have advocated the elimination of direct payments after 2013. The extent to which an elimination of direct payments would affect the land use dynamics in Europe including impacts on structural change and the environment has not been addressed in the existing literature. In this paper, we combine participatory methods, to analyze regional preferences for functions and effects of agriculture, and farm-level modeling, to assess the impacts of such a policy change on farm structures and land use intensities in four European regions located in Germany, Denmark, Italy and Poland, each with... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Policy environments and social economy. |
| Ano: 2011 |
URL: http://orgprints.org/21184/1/Uthes-etal-2011-AgriculturalSystems-Vol104-p110-121.pdf |
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| Boegh, E.; Houborg, R.; Bienkowski, J.; Dalgaard, Tommy; Dragisits, U.; Magliulo, E.. |
| Leaf biochemistry and biophysical parameters are important for simulating soil‐vegetation‐atmosphere exchanges of energy, water, CO2 and ammonia. The accumulation of leaf nitrogen (N) in vegetation canopies is a major component of the ecosystem N balance, and leaf N concentration and leaf area index (LAI) are important determinants of the maximum CO2 uptake by plants and trees. In NEU, high spatial resolution remote sensing data from the SPOT satellite were acquired to prepare maps of leaf N and LAI for 5 European landscapes. Mapping was conducted using the REGFLEC model which is an automatic and image‐based methodology developed for regional chlorophyll (Cab) and LAI estimation (ie. Houborg and Andersen, JARS 3, 2009). REGFLEC combines models for... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions; Biodiversity and ecosystem services; Landscape and recreation. |
| Ano: 2011 |
URL: http://orgprints.org/19047/4/19047.pdf |
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| Langer, Vibeke; Dalgaard, Tommy; Heidmann, Tove; Elmegaard, Niels; Mogensen, Lisbeth; Odderskær, Peter; Hasler, Berit. |
| Delprojektet om Natur- og miljøscenarier formulerede 4 måder at omlægge 25% af et konkret værkstedsområde til økologisk jordbrug. I scenariet ”Mælk” var det fortrinsvis kvægbrug, der blev omlagt. Scenariet ”1997” var også domineret af mælkeproducenter, men med et tillæg af planteavlsbedrifter. Scenariet ”Planter/svin” omfattede udelukkende svine- og planteavlsbrug, og scenariet ”Selvforsyning” omfattede bedrifter i et udpeget SFL-område, som ikke måtte supplere produktionen med indkøbt foder. Resultaterne pegede på en tendens til fald i kvælstofudvaskningen i hele området i tre scenarier, mens der var uklarhed m.h.t. det fjerde - ”Planter/svin”- scenariet. Belastningen med pesticider blev reduceret. I scenarierne ”Mælk” og ”1997”var reduktionen mindre end... |
| Tipo: Report |
Palavras-chave: Nutrient turnover; Production systems; Production systems; Biodiversity and ecosystem services; Farming Systems. |
| Ano: 2002 |
URL: http://orgprints.org/1574/1/rap_12.pdf |
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| Registros recuperados: 27 | |
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