Suchergebnisse
Filter
8 Ergebnisse
Sortierung:
Agent-based Analysis of Agricultural Policies: an Illustration of the Agricultural Policy Simulator AgriPoliS, its Adaptation and Behavior
In: Ecology and society: E&S ; a journal of integrative science for resilience and sustainability, Band 11, Heft 1
ISSN: 1708-3087
The agricultural policy simulator (AgriPoliS): an agent-based model to study structural change in agriculture (Version 1.0)
A central criticism common to agricultural economic modelling approaches for policy analysis is that they do not adequately take account of a number of characteristic factors of the agricultural sector. This concerns aspects like the immobility of land, heterogeneity of farms, interactions between farms, space, dynamic adjustment processes as well as dynamics of structural change. In brief, modelling the complexity of the system has not been at the centre of interest. In terms of modelling complex economic systems, an agent-based modelling approach is a suitable approach to quantitatively model and understand such systems in a more natural way. In the same way, this applies to the modelling of agricultural structures. In particular, agent-based models of agricultural structures allow for carrying out computer experiments to support a better understanding of the complexity of agricultural systems, structural change, and endogenous adjustment reactions in response to a policy change. This paper presents the agent-based model AgriPoliS (Agricultural Policy Simulator) which simultaneously considers a large number of individually acting farms, product markets, investment activity, as well as the land market, and a simple spatial representation. The ultimate objective of AgriPoliS is to study the interrelationship of rents, technical change, product prices, investments, production and policies, structural effects resulting from these, the analysis of the winners and losers of agricultural policy as well as the costs and efficiency of various policy measures. ; Ein oft genannter Kritikpunkt an vielen agrarökonomischen Politikanalysemodellen ist, dass diese nur ungenügend Bezug nehmen auf Aspekte wie die Immobilität von Boden, Heterogenität der Akteure, Interaktionen zwischen Betrieben, räumliche Bezüge, dynamische Anpassungsprozesse und Strukturwandel. Kurz, die Modellierung komplexer Wirkungszusammenhänge steht weniger oder nicht im Zentrum des Interesses. Agentenbasierte Modelle stellen einen Weg dar, das Verständnis komplexer ökonomischer Zusammenhänge zu verbessern bzw. zu quantifizieren. Insbesondere erlauben sie die Durchführung von einer Vielzahl von Computerexperimenten, mit denen Fragestellungen wie der Zusammenhang zwischen Politikmaßnahmen und Strukturwandel untersucht werden können. Basierend darauf, stellt dieser Beitrag das agentenbasierte Modell AgriPoliS (Agricultural Policy Simulator) vor. AgriPoliS ist ein räumlich-dynamisches Modell einer Agrarstruktur, in dem eine Vielzahl individuell abgebildeter landwirtschaftlicher Unternehmen in einer vereinfacht dargestellten Agrarregion agiert und beispielsweise um begrenzt verfügbare landwirtschaftliche Flächen konkurriert.
BASE
Past and future effects of the Common Agricultural Policy in the Czech Republic
In: Post-communist economies, Band 21, Heft 4, S. 495-511
ISSN: 1465-3958
Does structure matter? The impact of switching the agricultural policy regime on farm structures
In: Journal of Economic Behavior & Organization, Band 67, Heft 2, S. 431-444
This paper investigates the relationship between structural change in agriculture and a policy regime switch at the regional level. Using the agent-based spatial and dynamic simulation model AgriPoliS, we simulate structural change for two different farm structures in response to a policy change. Results show that structural adjustment differs depending on the initial structure.
Impact of the introduction of decoupled payments on functioning of the German land market : country report of the EU tender "Study on the functioning of land markets in those EU member states influenced by measures applied under the Common Agricultural Policy", May 2008
Against the background of the reform of the Common Agricultural Policy (CAP) in 2003 the following analysis, brings into focus the responses of the agricultural sector to decoupled subsidies. In particular it addresses the impact of the Single Payment Scheme (SPS) on land sales and rent prices and therefore on farm structure. It also aims to assess the extent to which the reform advances sound and sustainable agriculture and provides incentives for market-orientated farming practices. The study is based on the analysis of statistical data and expert surveys conducted in three selected regions.
BASE
Impact of the introduction of decoupled payments on functioning of the German land market: Country report of the EU tender Study on the functioning of land markets in those EU member states influenced by measures applied under the Common Agricultura ; Auswirkung der Entkopplung von Direktzahlungen a...
Against the background of the reform of the Common Agricultural Policy (CAP) in 2003 the following analysis, brings into focus the responses of the agricultural sector to decoupled subsidies. In particular it addresses the impact of the Single Payment Scheme (SPS) on land sales and rent prices and therefore on farm structure. It also aims to assess the extent to which the reform advances sound and sustainable agriculture and provides incentives for marketorientated farming practices. The study is based on the analysis of statistical data and expert surveys conducted in three selected regions. ; Die vorliegende Studie untersucht den Einfluss der 2003 im Zuge der Reform der Gemeinsamen Agrarpolitik (GAP) durchgeführten Entkopplung der Direktzahlungen auf den Agrarsektor in Deutschland. Besonderer Fokus der Analyse liegt auf der Auswirkung der einmaligen Zahlungen auf die Kauf- und Pachtpreise für das landwirtschaftlich genutzte Land. Des Weiteren wird die Förderung einer nachhaltigen und marktorientierten Landwirtschaft durch die GAP-Reform bewertet. Die Untersuchung basiert auf Auswertung statistischer Daten und auf Expertenbefragungen, welche in drei ausgewählten Bundesländern durchgeführt wurden.
BASE