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<H1>Concept</H1> | |
<P>CAPRI is a partial equilibrium model for the agricultural sector developed for policy impact assessment | |
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of the Common Agricultural Policy and trade policies from global to regional scale with a focus on the EU. | |
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Main features:</P> | |
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<div style="float:right;padding:20px"><a href="images\overview.jpg"><img style="text-decoration: none;border: none" src="images\overview.jpg"/></a></P></div> | |
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<LI><P> Comparative partial static equilibrium model, solved by iterating supply | |
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and market modules<P></LI> | |
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<LI><P><B>Supply module:</B> separate, regional, non-linear programming models allowing | |
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to directly implement most policy measures with highly differentiated | |
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set of activities. Allocation based on profit maximising behaviour calibrated | |
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to exogeneous elasticities (animals) and estimated multi-product cost | |
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functions (annual crops); provision of nutrient balances and gas emissions with global warming | |
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potential based on production system. Template approach with structurally identical models | |
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which differ in parametrization. Cover completely EU agriculture (280 regional models or 1.900 farm type models) <A HREF='https://www.capri-model.org/dokuwiki/doku.php?id=capri:concept:supply'> read more ..</A></P></LI> | |
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<LI><P><B>Market module:</B> global spatial multi-commodity Model. <A HREF='https://www.capri-model.org/dokuwiki/doku.php?id=capri:concept:regMarket'>28 trade blocks and 60 countries</A>. | |
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Flexible and well-behaved functional forms. Armington assumption to model bi-lateral trade flows. | |
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Tariff Rate Quotas and preferential agreements. Subsidised exports and market interventions <A HREF='https://www.capri-model.org/dokuwiki/doku.php?id=capri:concept:market'> read more ..</A></P></LI> | |
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<LI><P>Equilibrium ensures cleared markets for products and young animals, | |
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match of feeding requirements of national herds</P></LI> | |
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<LI><P>Welfare analysis, rich set of <A HREF="https://www.capri-model.org/dokuwiki/doku.php?id=capri:concept:econind">economic</A> and <A HREF="https://www.capri-model.org/dokuwiki/doku.php?id=capri:concept:envind">environmental</A> indiactors</P></LI> | |
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<LI><P><A HREF="https://www.capri-model.org/dokuwiki/doku.php?id=capri:concept:spatDown">Spatial downscaling</A> of crop shares, yields, stocking densities, fertilizer application rates to 150.000 | |
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Homogenous Soil Mapping Units (cluster of 1x1 km grid cells) for EU27 and link to bio-physical model DNDC</P></LI> | |
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<P>Technically, CAPRI is realised in <A HREF=http://www.gams.com/>GAMS</A> and steered by a <A HREF="/dokuwiki/doku.php?id=capri:gui:GUI">Graphical User Interface realised in Java</A>. | |
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The GAMS code and the data base are hosted on <A HREF=http://subversion.tigris.org/>SVN</A> version control server.</P> | |
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