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	Provedor de dados AgEcon (24) Autor Kantelhardt, Jochen (24) Kapfer, Martin (8) Schaller, Lena (4) Ahrens, Heinz (3) Droesler, Matthias (3) Eckstein, Karin (3) Hübner, Rico (3) Ziesel, Sigrid (3) Börner, Jan (2) Ganzert, Christian (2) Higgins, Steven Ian (2) Hoffmann, Helmut (2) Kramer, Christine (2) Roeder, Norbert (2) Scheiter, Simon (2) Freibauer, Annette (1) Hoper, Heinrich (1) Osinski, Elisabeth (1) Roder, Norbert (1) Mais... Palavra-chave Land Economics/Use (11) Environmental Economics and Policy (6) Agricultural and Food Policy (5) Resource /Energy Economics and Policy (4) Linear programming (3) R58 (3) Agent-based modelling (2) Agricultural land use (2) Agricultural peatland use (2) Data envelopment analysis (2) Economic consequences (2) Economic efficiency (2) Farm survey (2) Farmers attitude (2) Land-market simulation (2) Landscape visualisation (2) Policy analysis (2) Q12 (2) Q15 (2) Q24 (2) Mais... Tipo do documento Conference Paper or Presentation (21) Journal Article (2) Presentation (1) Ano 2011 (4) 2010 (1) 2009 (6) 2008 (3) 2007 (5) 2006 (4) 2003 (1) Mais... País United States (24) Idioma Inglês (22) Alemão (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 24 Primeira ... 1 2 ... Última Integrating ecological and economic aspects in land use concepts for agricultural landscapes AgEcon Ahrens, Heinz; Kantelhardt, Jochen. Especially in environmentally sensitive agricultural landscapes, agriculture cannot define its aims by itself - it has to account for a number of demands of different groups of society. For example, agriculture is expected to produce food and at the same time contribute to the protection of cultural landscapes and to further ecological services. Land use concepts for ecologically particularly sensitive agricultural landscapes are often focussed on the attainment of specific environmental objectives in specific areas, neglecting both socioeconomic effects, in particular income effects, and the farmers' income-driven production responses outside these areas. The paper illustrates, on the basis of an empirical study, (1) that the farmers' objectives and... Tipo: Journal Article Palavras-chave: Agricultural landscapes; Land-use concepts; Multi-criteria decision analysis; Land Economics/Use; Environmental Economics and Policy. Ano: 2007 URL: http://purl.umn.edu/96735 The impact of nature conservation on agricultural greenhouse-gas (GHG) emissions – an economic assessment of selected German study regions AgEcon Schaller, Lena; Droesler, Matthias; Kantelhardt, Jochen. Using a significant amount of public funding, large-scale nature-conservation projects in Germany aim to secure and develop ecologically valuable areas and endangered habitats and species. Due to the substantial land-use changes accompanying these projects, their implementation can also have relevant climate effects – one result which has not been explicitly focused upon previously. Our study analyses major cost positions in implementing such projects, particularly the expense of changing or abandoning agricultural land-use for conservation purposes. We link public funding to relevant climate effects and derive CO2 abatement costs. Therefore we conduct plot-specific ex-post analyses of agricultural land-use and greenhouse-gas (GHG) emissions. Our study... Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy. Ano: 2011 URL: http://purl.umn.edu/108797 CONSEQUENCES OF THE CAP REFORM ON FARM ACTIVITIES AND THE ENVIRONMENT – RESULTS OF AN EMPIRICAL STUDY AgEcon Kantelhardt, Jochen; Ganzert, Christian; Kramer, Christine. The Common European Agricultural Policy (CAP) reform not only has an impact on agriculture but also has significant effects on nature and the environment. This is specifically caused by decoupling direct payments from agricultural production, which will increase the market orientation of agriculture, and the implementation of Cross Compliance. Based on an empirical analysis of the consequences of the CAP reform in eight German regions, a number of key aspects for a future environmentally friendly development of the agrarian policy are suggested. The results indicate that the CAP reform currently does not increase the proportion of environmentally friendly production systems significantly. Cross Compliance is shown to have certain positive effects; it... Tipo: Conference Paper or Presentation Palavras-chave: Reform Of The Common European Agricultural Policy; Decoupling Of Direct Payments; Cross Compliance; Regional Embeddedness Of Farmers; Intrinsic Motivation; Agricultural and Food Policy; Q15; Q58; R58. Ano: 2008 URL: http://purl.umn.edu/44798 Reshaping agricultural peatland use climate friendly in selected German regions AgEcon Schaller, Lena; Kantelhardt, Jochen; Hübner, Rico; Freibauer, Annette; Droesler, Matthias. About 30 percent of the world’s soil carbon is stored in peat soils. Peatland’s functional principle of carbon storage greatly depends on management strategies. Therefore agricultural peatland use becomes a focal point of interest in the current debate on climate protection. Agricultural management demands a drawdown of the water-level that causes aerobe degradation of the soils, as well as trace-gas emissions which have a negative impact on greenhouse-gas balance. Climate-friendly peatland management strategies, however, demand enhanced groundwater tables and decreased land-use intensity. Against this background we analyse ways of re-organising agricultural peatland use within a case study located in Germany, where intensive peatland use accounts for 2.3... Tipo: Conference Paper or Presentation Palavras-chave: Agricultural peatland use; Reduction of greenhouse gases; Farm survey; Economic consequences; Environmental Economics and Policy; Farm Management; Land Economics/Use; Production Economics; Resource /Energy Economics and Policy; Q24; Q54; R58. Ano: 2009 URL: http://purl.umn.edu/51547 Assessing programmes for the provision of agri-environmental services – An efficiency analysis realized in Southern Germany AgEcon Kantelhardt, Jochen; Eckstein, Karin; Hoffmann, Helmut. Agricultural land use does not only concern farmers, but is of high relevance for the environment. Agri-environmental programmes aim to foster the environmental soundness of agricultural production. The aim of this study is to analyse the impact of agri-environmental programmes on the economic and the environmental performance of farms. Using the nonparametric method of Data Envelopment Analysis (DEA), we calculated the economic as well as the environmental efficiencies of farms and examined whether farms are able to succeed in combining environmental and economic efficiency. As study object serves a South German agri-environmental programme, the Bavarian KULAP. A farm survey was conducted covering a total of 102 farmers. The results show that farmers who... Tipo: Conference Paper or Presentation Palavras-chave: Agri-environmental programme; Data envelopment analysis; Environmental efficiency; Economic efficiency; Environmental Economics and Policy; Productivity Analysis; Resource /Energy Economics and Policy. Ano: 2009 URL: http://purl.umn.edu/51688 OKONOMISCHE UND NATURSCHUTZFACHLICHE UBERLEGUNGEN ZUR AUSGESTALTUNG LOKALER AGRARUMWELTPROGRAMME-DISKUTIERT AM BEISPIEL EINES PROGRAMMS ZUR MOORSCHONENDEN ENTWICKLUNG LANDWIRTSCHAFTLICHER BETRIEBE (German) AgEcon Kantelhardt, Jochen; Hoffmann, Helmut. Der vorliegende Beitrag stellt ein lokales Agrarumweltprogramm zur moorschonenden und naturschutzgerechten Entwicklung landwirtschaftlicher Betriebe vor. Anhand ausgewählter Modellbetriebe wird das Programm hinsichtlich betriebswirtschaftlicher Gesichtspunkte analysiert. Aufbauend auf diese Analyse werden die Möglichkeiten und Grenzen lokaler Agrarumweltprogramme diskutiert und es werden Empfehlungen für die Ausgestaltung solcher Programme formuliert. Es zeigt sich, dass die Vorteile eines lokalen Vorgehens insbesondere in der Einbindung lokaler Stakeholder liegen. Schwierigkeiten bestehen vor allem hinsichtlich der Erfüllung von Kontroll- und Wettbewerbsvorgaben der Europäischen Union. Tipo: Conference Paper or Presentation Palavras-chave: Ökonomische Beurteilung; Lokale Agrarumweltprogramme; Programmgestaltung; Umweltgerechte. Ano: 2007 URL: http://purl.umn.edu/7581 ESTIMATION OF COSTS FOR MAINTAINING LANDSCAPE ELEMENTS BY THE EXAMPLE OF SOUTHWEST GERMANY AgEcon Kapfer, Martin; Kantelhardt, Jochen; Osinski, Elisabeth. In comparison to large-scale natural landscapes separated from extensively used agricultural production landscapes in North America or Australia, German and Central Europe landscapes are all charac-terised by predominantly agricultural landscapes with few "rests of nature". Due to the high population density, different types of land users demand different functions of the landscape. In addition to food production, there is a high demand for protection of cultural heritage by caring for e.g. hedge-rows in the landscape. The aim of this study was to estimate the costs arising from the maintenance of landscape elements in landscapes situated on land with different site conditions. As an example, the distribution of hedgerows on sites of varying agricultural... Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy. Ano: 2003 URL: http://purl.umn.edu/25923 Prospects for climate friendly peatland management – Results of a socioeconomic case study in Germany AgEcon Schaller, Lena; Kantelhardt, Jochen. In the current debate on climate protection, agricultural production has become a focal point of interest. This study introduces the climate effectiveness of agricultural management of peat-soils. Agriculture on peatland demands a water-level drawdown that causes aerobe degradation of the soils. The resulting trace-gas emissions have a negative impact on the greenhouse-gas balance. In Germany more than 80% of peatland is used agriculturally; the resulting emissions account for 2.3 – 4.5% of Germany’s overall emission. Climate-friendly peatland management strategies, however, demand enhanced groundwater tables and decreased land-use intensity. With regard to agricultural income, severe economic consequences are to be expected. Against this background we... Tipo: Conference Paper or Presentation Palavras-chave: Agricultural peatland use; Reduction of greenhouse gases; Farm survey; Economic consequences; Land Economics/Use; Q24; Q54; R58. Ano: 2009 URL: http://purl.umn.edu/51074 Structural Change and Landscape Appearance AgEcon Kapfer, Martin; Ziesel, Sigrid; Kantelhardt, Jochen. Our study examines the potential developments of cultural landscapes, taking into consideration various economic and social conditions (scenarios). The study takes place in three project regions which represent typical landscapes in Southern Germany and Austria. In each project area, the influence of a changing economic and political framework is analysed. The following scenarios are defined: (1) status quo (current economic and agri-political framework); (2) high-producer prices and constant (or even increasing) direct payments; and (3) low-producer prices and no (or very low) direct payments. In all three regions, potential production responses are estimated for all farms and aggregated on a regional level. The estimation takes into account social and... Tipo: Conference Paper or Presentation Palavras-chave: Scenario analyses; Structural change; Landscape visualisation; Land Economics/Use. Ano: 2011 URL: http://purl.umn.edu/114777 Impact of Agri-food Systems on Landscape Appearance AgEcon Kapfer, Martin; Ziesel, Sigrid; Kantelhardt, Jochen. Our study examines the potential developments of cultural landscapes, taking into consideration various economic and social conditions (scenarios). The study takes place in three project regions which represent typical landscapes in Southern Germany and Austria. In each project area, the influence of a changing agri-food environment is analysed. The following scenarios are defined: (1) status quo (current economic and agri-political framework); (2) high-producer prices and constant (or even increasing) direct payments; and (3) low-producer prices and no (or very low) direct payments. In all three regions, potential production responses are estimated for all farms and aggregated on a regional level. The estimation takes into account social and economic... Tipo: Conference Paper or Presentation Palavras-chave: Scenario analyses; Structural change; Landscape visualisation; Agribusiness; Agricultural and Food Policy; Community/Rural/Urban Development; Food Consumption/Nutrition/Food Safety; Labor and Human Capital. Ano: 2010 URL: http://purl.umn.edu/95042 Integrating small farms in agent based models AgEcon Roder, Norbert; Kantelhardt, Jochen. In German agriculture structural change is mainly a result of the outmigration of smaller farms from the sector. The decisions of these farmers to leave or stay in the sector, are not based solely on financial data and market expectations. Other aspects are important such as the preservation of the cultural landscape, the continuation of the family tradition, or self-realisation. Only if these goals are adequately integrated into land use models, one can hope that the type and magnitude of reactions predicted by the model will be similar to that observed in reality. The main goal of this paper is to present a model approach that allows for the integration of non-monetary aspects into an agri-economic land use model. The approach is tested for a sample of... Tipo: Conference Paper or Presentation Palavras-chave: Farmer attitude; Linear programming; Agent based modelling; Land market; Agricultural and Food Policy; Consumer/Household Economics; Land Economics/Use; Q12; Q15; R14. Ano: 2009 URL: http://purl.umn.edu/52826 QUANTIFIZIERUNG OKONOMISCHER WIRKUNGEN DER FLURNEUORDNUNG - EIN VERGLEICH AUSGEWAHLTER STUDIEN - (German) AgEcon Kapfer, Martin; Kantelhardt, Jochen. Dieser Beitrag vergleicht verschiedene aktuelle Studien zur Bewertung der direkten ökonomischen Wirkungen von Flurbereinigungsverfahren für die Landbewirtschaftung. Alle Studien basieren auf Modellrechnungen und sind als "Vorher-Nachher"-Vergleich angelegt. Methodisch unterscheiden sich die untersuchten Studien vor allem hinsichtlich des Abstraktionsgrades bei der Abbildung der Feldstruktur und der Produktionstechnik. Auch in Bezug auf die erzielten Ergebnisse sind deutliche Unterschiede festzustellen. Entscheidender Faktor hierfür ist neben einigen methodischen Einflüssen die Struktur der landwirtschaftlich genutzten Fläche in den betrachteten Flurneuordnungsgebieten. Eine Flurneuordnung ist aus landwirtschaftlicher Sicht besonders vorteilhaft, wenn die... Tipo: Conference Paper or Presentation Palavras-chave: Flurneuordnung; Direkte Wirkungen; Modellrechnung. Ano: 2007 URL: http://purl.umn.edu/7585 Impact of the CAP Reform on Small-Scaled Grassland Regions in Bavaria, Germany AgEcon Roeder, Norbert; Kantelhardt, Jochen; Kapfer, Martin. The CAP reform of 2003 will change farmer's business environment in Europe. This paper analyses the impact of the reform on the land use in southern German grassland regions. The assessment will be based on model calculations for two typical grassland regions. Each study area represents one village with its specific farm structure and natural conditions. These regions differ in their excellence with respect to agricultural use. In Southern Germany small to medium sized family farms is the most frequent type of farming. We use a regional land-use model that conceives farms as independent agents aiming at maximum individual utility. Farm agents optimize their farm organisation with the help of a linear-programming algorithm that takes into account natural,... Tipo: Conference Paper or Presentation Palavras-chave: CAP-reform; Linear programming; Land-market simulation; Agent-based modelling; Farmers attitude; Policy analysis; Agricultural and Food Policy. Ano: 2006 URL: http://purl.umn.edu/25383 Impact of the CAP reform on small-scale grassland regions AgEcon Roeder, Norbert; Kantelhardt, Jochen; Kapfer, Martin. This paper presents a regional land-use model that conceives farms as independent agents aiming at maximum individual utility. Farm agents optimize their utility with the help of a linear-programming algorithm that takes into account natural, economic and personal restrictions. Interactions between farms take place on the land market, which is modelled as an equilibrium market. The model is applied in three typical grassland regions in southern Bavaria. The results indicate that the CAP reform of 2003 has various significant consequences for grassland use. In particular, the decreasing profitability of dairy farming will lead to low-intensity forms of grassland use, including mulching. In general, land rents will increase due to the effects of decoupling. Tipo: Journal Article Palavras-chave: CAP Reform; Linear programming; Land-market simulation; Agent-based modelling; Farmers attitude; Policy analysis; Agricultural and Food Policy; Land Economics/Use. Ano: 2006 URL: http://purl.umn.edu/97192 Integrating Ecological And Economic Aspects In Land Use Concepts: Some Conclusions From A Regional Land Use Concept For Bayerisches Donauried AgEcon Ahrens, Heinz; Kantelhardt, Jochen. Land use concepts for ecologically particularly sensitive agricultural landscapes are often focussed on the attainment of specific environmental objectives in specific areas, neglecting both socio-economic effects, in particular income effects, and the farmers' income-driven production responses outside these areas. The paper illustrates, on the basis of an empirical study on the land use in the southern German region Bayerisches Donauried, (1) that the farmers' objectives and production responses need to be integrated in land use concepts for agricultural landscapes because of their potentially counterproductive effects on the attainment of environmental objectives, and (2) how multi-criteria analysis (MCA) can be used to transform a primarily... Tipo: Conference Paper or Presentation Palavras-chave: Land Economics/Use. Ano: 2007 URL: http://purl.umn.edu/7986 The Provision of Ecosystem Services by Agriculture – a Spatially Explicit DEA Approach AgEcon Kapfer, Martin; Hübner, Rico; Eckstein, Karin; Ziesel, Sigrid; Kantelhardt, Jochen. According to the concept of ecosystem services, agriculture not only provides commodities but also cultural and regulating services. While it is easy to value commodity production by market prices, the valuation of cultural and regulating services is complex because of their public good character. Non-parametric approaches such as the Data Envelopment Analysis (DEA) allow for estimating the contribution of agriculture to such services. However, it is not enough to know the extent of ecosystem services provided; it is also necessary to be aware of which farmers provide these services and where they are provided. In this paper, we suggest a plot-specific approach combining GIS analysis and DEA models. This allows a spatially explicit assessment of... Tipo: Conference Paper or Presentation Palavras-chave: Agricultural land use; Data envelopment; Environment-oriented technical efficiency; Landscape-appearance-oriented technical efficiency; Land Economics/Use; Q12; Q26; Q57. Ano: 2011 URL: http://purl.umn.edu/108954 Do farmers provide agri-environmental services efficiently? – An economic analysis AgEcon Kantelhardt, Jochen; Eckstein, Karin. Agricultural land use does not only concern farmers, but also has a large number of social and environmental effects. Consequently, it is to be assumed that farmers have to use financial resources as well as labour in order to provide these services. Using the nonparametric method of Data Envelopment Analysis (DEA), we calculated the economic as well as the ecological efficiencies of farms and examined whether farms are able to succeed in combining ecological and economic efficiency. In addition to this analysis, we studied the driving factors of the respective efficiencies. The study was carried out in four typical production regions in Bavaria which vary in their proportions of grassland as well as their yield potential; thus, the study regions reflect a... Tipo: Conference Paper or Presentation Palavras-chave: Agricultural land use; Data envelopment analysis; Ecological efficiency; Economic efficiency; Environmental Economics and Policy. Ano: 2007 URL: http://purl.umn.edu/7973 A method to calculate economic key figures with regard to plot structure improvements AgEcon Kapfer, Martin; Kantelhardt, Jochen. The aim of land consolidation projects is to improve the competitiveness of agriculture. Since land consolidation is subsidised by national and European means, the effectiveness of such measures must be determined. The following paper presents a method which makes it possible to calculate the direct economic effects of land consolidation. The calculations, considering labour demand, machinery costs and headland effects, compare the economic situation before and after land consolidation. The method was applied to four land consolidation projects in Bavaria. It can be shown that, to a varying degree, land consolidation in the studied areas leads to a substantial decrease in labour demand and machinery costs. Tipo: Conference Paper or Presentation Palavras-chave: Land consolidation; Geographical information system; Direct economic effects; Labour demand; Machinery costs. Ano: 2008 URL: http://purl.umn.edu/36858 Consequences of the CAP reform on the environment and nature conservation Results of an empirical study in Germany AgEcon Kantelhardt, Jochen; Ganzert, Christian; Kramer, Christine. The Common European Agricultural Policy (CAP) reform not only has an impact on agriculture but also has significant effects on nature and the environment. This is specifically caused by decoupling direct payments from agricultural production, which will increase the market orientation of agriculture and by implementing cross compliance. A number of key aspects promoting a future environment-friendly development of the CAP are suggested, based on an empirical analysis of the impact of this reform in eight German regions. In particular, we recommend the coupling of direct payments with the provision of environmental and social welfare services as well as the installation of a long-term monitoring system to enhance the understanding of the links between... Tipo: Conference Paper or Presentation Palavras-chave: Reform of the Common European Agricultural Policy; Decoupling of direct payments; Cross compliance; Regional embeddedness of farmers; Intrinsic motivation. Ano: 2008 URL: http://purl.umn.edu/36857 Approximating optimal numerical solutions to bio-economic systems: How useful is simulation-optimization? AgEcon Börner, Jan; Higgins, Steven Ian; Scheiter, Simon; Kantelhardt, Jochen. For applications in agricultural economics, complex ecological systems are often oversimplified to the extent that ecologists rarely consider model results valid. Recursive optimization of complex systems represents an alternative, but requires strong assumptions regarding time preference and uncertainty. In this paper we explore the implications of merely approximating “true” optima of complex dynamic optimization problems using a technique called simulation-optimization. We develop a standard discrete renewable resource use problem and solve it numerically using both simulation-optimization and non-linear mathematical programming. We subsequently introduce non-linearity and uncertainty and graphically compare the performance of simulation-optimization... Tipo: Conference Paper or Presentation Palavras-chave: Optimal control; Simulation; Ecological economic systems; Interdisciplinary modeling; Environmental Economics and Policy; Research Methods/ Statistical Methods. Ano: 2009 URL: http://purl.umn.edu/51407 Registros recuperados: 24 Primeira ... 1 2 ... Última

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