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| Registros recuperados: 683 | |
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| Haas, Guido. |
| Die Beurteilung des Energieeinsatzes der Erzeugung von Lebensmitteln erfordert ein anderes Effizienzkriterium als die Erzeugung von Brennstoffen. Die Energieeffizienz (Wirkungsgrad) stellt die Relation bzw. den Quotient von Energiezufuhr (Input) zu der Zielgröße Ertrag (Output: Masse oder Energie) dar. Der Energieertrag selbst ist kein geeigneter Maßstab zur Parametrisierung der Energieeffizienz. Um unterschiedliche Ertragsleistungen (Masse oder Energie) bei der Effizienzbeurteilung zu berücksichtigen, sind ev. verschiedene Leistungsklassen zu bilden. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Air and water emissions. |
| Ano: 1996 |
URL: http://orgprints.org/13932/1/Brennwert_Lebensmittel96.pdf |
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| Bende-Michl, U.; Volk, M.; Harmel, D.; Newham, L.; Dalgaard, T.. |
| This short communication paper presents recommendations for developing scale-appropriate monitoring and modelling strategies to assist decision making in natural resource management (NRM). These ideas presented here were discussed in the session (S5) ‘Monitoring strategies and scale-appropriate hydrologic and biogeochemical modelling for natural resource management’ session at the 2008 International Environmental Modelling and Simulation Society conference, Barcelona, Spain. The outcomes of the session and recent international studies exemplify the need for a stronger collaboration and communication between researcher and model developer on the one side, and natural resource managers and the model users on the other side to increase knowledge in: 1)... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 2011 |
URL: http://orgprints.org/18942/4/18942.pdf |
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| Die „Initiative Grundwasserschutz durch Ökolandbau“ ist Teil der „Aktion Grundwasserschutz“ der Regierung von Unterfranken und besteht seit dem Jahr 2008. Im Bereich Landwirtschaft wird vor allem die Nitratbelastung vieler Trinkwasserbrunnen im Regierungsbezirk als Herausforderung gesehen. Mit der „Initiative Grundwasserschutz durch Ökolandbau“ soll versucht werden den Anteil der ökologischen Bewirtschaftung an der Fläche und an den Betrieben deutlich zu erhöhen. Die Aktivitäten werden vom Fachzentrum Ökolandbau koordiniert und vom Forschungsinstitut für Biologischen Landbau fachlich unterstützt. Die Bereiche Beratung, Marktentwicklung, Flächenförderung und Öffentlichkeitsarbeit werden möglichst gleich gewichtet. Im Bereich der Beratung bilden... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2012 |
URL: http://orgprints.org/20985/1/Schwab%2Dund%2DHermanowski_2012_Trinkwasserschutz.pdf |
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| Hospers-Brands, A.J.T.M.; Anema, D.; Bus, M.C.. |
| 2013 was the second year of the "PlantyOrganic" system development in practice. The six-year rotation is laid out and measurements took place at soil and crop. With the exception of the potatoes in 2013 all crops had the pre-crop as foreseen in the design. The fertilizers used were completely produced in the own system, as foreseen in the system design. The amounts of nitrogen applied were about 45 % higher than in the design. Soil nitrogen is measured and used as input in the nitrogen model NDICEA. There was a sufficient match between measured and calculated level of soil mineral nitrogen. The crops performed well, with a high yield in carrots and oats, and a disappointing yield in wheat. In wheat nitrogen was limiting for the yield, we do not yet have a... |
| Tipo: Report |
Palavras-chave: Nutrient turnover; Air and water emissions; Farm nutrient management. |
| Ano: 2014 |
URL: http://orgprints.org/26064/1/2892.pdf |
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| Niggli, U.; Fließbach, A.; Hepperly, P.; Scialabba, N.. |
| Is low greenhouse gas emission (GHG) agriculture possible? Is it, in fact, desirable? In seeking answers to these two basic but extremely relevant questions, this study examines current farming practices, and incorporates scientific databases from longterm field experiments as case studies for low GHG agriculture. Further, the study examines the changes that will be needed for low greenhouse gas agriculture systems to become a reality. It also elucidates the adaptive capacity of agro-ecological farming system approaches, using organic system case studies from the scientific literature. Each year, agriculture emits 10 to 12 percent of the total estimated GHG emissions, some 5.1 to 6.1 Gt CO2 equivalents per year. Smith, et al. (2007) and Bellarby, et al.... |
| Tipo: Book |
Palavras-chave: Environmental aspects; Air and water emissions. |
| Ano: 2009 |
URL: http://orgprints.org/15690/1/niggli-etal-2009-lowgreenhouse.pdf |
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| Petersen, Søren O.; Stamatiadis, Stamatis; Christofides, Calliopi. |
| Nitrogen excreted by cattle during grazing is a significant source of atmospheric nitrous oxide (N2O). The regulation of N2O emissions is not well understood, but may vary with urine composition and soil conditions. This laboratory study was undertaken to describe short-term effects on N2O emissions and soil conditions, including microbial dynamics, of urea amendment at two different rates (22 and 43 g N m-2). The lower urea concentration was also combined with an elevated soil NO3- concentration. Urea solutions labelled with 25 atom% 15N were added to the surface of repacked pasture soil cores and incubated for 1, 3, 6 or 9 days under constant conditions (60% WFPS, 14°C). Soil inorganic N (NH4+, NO2- and NO3-), pH, electrical conductivity and dissolved... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 2004 |
URL: http://orgprints.org/4062/1/4062.pdf |
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| Müller, Adrian; Davis, Joan S.. |
| For a successful outcome at COP 15 in Copenhagen in December, viable policy paths for effective climate change mitigation need to be provided. In addition, adaptation is unavoidable. One key point is the integration of agriculture (accounting for 10-12% of global emissions, Smith et al. 2007) in a post-2012 agreement. Its main potential lies in its significant capacity to sequester CO2 in soils, and in its synergies between mitigation and adaptation. This potential is best utilized employing sustainable agricultural practices such as organic agriculture (OA). Conservative estimates of the total mitigation potential of OA amount to 4.5-6.5 Gt CO2eq/yr (of ca. 50 Gt CO2eq total global greenhouse gas emissions). Depending on agricultural management practices,... |
| Tipo: Working paper |
Palavras-chave: "Organics" in general; Air and water emissions. |
| Ano: 2009 |
URL: http://orgprints.org/16507/1/mueller-and-davis-2009-ReducingGlobalWarming_PolicyBrief.pdf |
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| Rolfsmeyer, Daniel; Möller, Detlev. |
| Cultivation methods in organic farming are controversial discussed as the traditional ploughing system faces a variety of disadvantages, especially with regard to soil con-servation. To address these problems a mound cultivation system has been devel-oped. This paper presents a case study (on-farm-research) combined with expert interviews and economic modelling results. The aims of the study are to identify the most important cost driver, to calculate the cost of mound cultivation with regard to energy consumption and labour costs and to formulate conditions where this system is economically viable. Experience from on-farm-research and modelling show that the system is in particular suitable for large farms where the field labour organisation is a... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Buildings and machinery; Air and water emissions; Soil tillage; Farm economics. |
| Ano: 2007 |
URL: http://orgprints.org/9683/1/9683_Rolfsmeyer_Vortrag.pdf |
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| Ahtiainen, Heini. |
| The study uses meta-analysis to provide insights into the value of international marine resources, illustrating the issue with the case of the Baltic Sea. Willingness to pay for water quality improvements varies systematically with factors such as a country's income level, characteristics of the change in water quality, water body type, study year and methodology. The results of the meta-analysis are applied to benefit transfer in order to assess the distribution of the benefits of marine protection measures between the Baltic Sea countries and to compare the results with previous research. The net benefits of protecting the Baltic are positive, but they are asymmetrically distributed between the littoral countries. |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 2009 |
URL: http://orgprints.org/15727/1/DP2009_1.pdf |
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| Vassy, Agathe; Vincent, Audrey. |
| Face au constat alarmant de l’état actuel des masses d’eau et aux objectifs de résultats fixés par la Directive Cadre sur l’Eau, les gestionnaires de l’eau sont contraints de mettre en place des mesures préventives, en développant des plans d’actions agricoles sur leurs aires d’alimentation de captage. Au vue de l’orientation prise par les institutions françaises, l’agriculture biologique apparait comme l’un des moyens pouvant être employé sur cette problématique. Le programme Agriculture Biologique et Aires d’Alimentation de Captage (ABAAC), piloté par l’ISARA-Lyon s’inscrit dans ce contexte à travers l’étude des enjeux et des perspectives d’un tel axe de développement. S’intéressant à l’émergence d’une nouvelle catégorie de projet visant à développer... |
| Tipo: Thesis |
Palavras-chave: Air and water emissions; Policy environments and social economy; Regulation. |
| Ano: 2011 |
URL: http://orgprints.org/27929/1/Vassy_2011_Memoire_ABIPEC.pdf |
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| Kelm, Michael; Loges, Ralf; Taube, Friedhelm. |
| Nitrogen (N) leaching, especially in the form of nitrate (NO3-), still represents a major environmental impact from agriculture. In order to estimate potential N leaching losses under conditions on commercial farms in Northern Germany, N leaching was analyzed by using ceramic suction cups on representative fields on eight organic and conventional farms. On dairy farms, permanent grassland and maize for silage were analyzed as the main fodder crops. On arable farms, one crop with a high risk and one with a low risk of N leaching losses were selected. On permanent grassland, N leaching was pronouncedly lower on organic farms. If grass/clover on organic farms was ploughed, high amounts of N were leached in the following winter, irrespective if grass/clover... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2007 |
URL: http://orgprints.org/11005/1/256_9765_Kelm_N%2DAuswaschung.pdf |
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| Carter, Mette S.; Sørensen, Peter; Petersen, Søren O.; Ma, Xiuzhi; Ambus, Per. |
| More efficient use of green manure-derived nitrogen (N) may improve crop yields and reduce environmental impacts in stockless organic arable farming. In this 3-month incubation study, we tested a new strategy where green manure leys are harvested and preserved until the following spring either as compost mixed with straw or as silage of harvested ley biomass. Grass-clover compost or silage was soil-incorporated by either simulated ploughing (green manure placed at 15 cm depth) or harrowing (green manure mixed into the upper 5-cm soil horizon) in order to assess treatment effects on net release of plant-available N, nitrous oxide (N2O) fluxes, and soil respiration. Grass-clover silage provided the highest net N release with similar results for the two... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Air and water emissions. |
| Ano: 2014 |
URL: http://orgprints.org/25158/7/25158.pdf |
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| Eriksen, J; Askegaard, M; Søegaard, K. |
| Due to increasing size of Danish organic dairy farms uniform grazing of all cropped land becomes inexpedient due to long distance to the milking facilities. We investigated nutrient dynamics and feed production in two dairy crop rotations with internal differences in proportion of grazing and cutting. One six year crop rotation represents close to the farm buildings (barley [Hordeum vulgare L.] undersown with grass-clover [Lolium perenne L.–Trifolium repens L.] - 4 years of grass-clover - spring barley/catch crop) and another represents further away (barley undersown with grass-clover, 2 years of grass-clover -barley/catch crop - maize [Zea mays L.]/catch crop - lupin [Lupinus angustifolius]/catch crop). In each of the crop rotations was made five... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Air and water emissions. |
| Ano: 2008 |
URL: http://orgprints.org/14641/1/27FA_Eriksen_el_al._final_paper.pdf |
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| Prem, Werner; Hechenbichler, Johannes; Lörcher, Michael; Manhart, Hugo; Hülsbergen, Kurt-Jürgen. |
| For the Hofpfisterei, one of biggest eco-bakery in Germany, the communication of the sustainable production of their bread plays an important role. The Hofpfisterei wants to introduce an environmental management over the supply chain, in order to improve among other things the energy efficiency. The potential is determined by a test net of organic farms by means of life cycle assessment. The reduction of energy input on the farms is to be judged as small. On the other hand the potential is high for energy output. The results show, that alone by the use of the clover grass in the market fruit farms, the energy outputs can be increased clearly. The goal of an energy autarky over supply chain can be achieved by this. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Biodiversity and ecosystem services; Produce chain management; Air and water emissions. |
| Ano: 2007 |
URL: http://orgprints.org/9591/1/9591_Prem_Vortrag.pdf |
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| Registros recuperados: 683 | |
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