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6C - LCA and Economics: Input/Output Analysis (TU2/4) Input-output-based modelling of the Danish Agriculture. Dalgaard, Randi1, Nielsen, Anne Merete 2, Halberg, Niels 1, 1 Danish Institute of Agricultural Sciences, Tjele, Denmark, Denmark2 2.-0 LCA consultants, Copenhagen, Denmark, Denmark ABSTRACT- Agriculture contributes with more than 20% of the Danish greenhouse gas emissions. However, consistent product-oriented data from agriculture production have been missing. Till now, life cycle data have only been obtained from incomplete casestudies, because of unsolved questions of co-productions (each farm produces many products) and site-dependency (the emissions and resource-use vary considerably between farms). In this study input-output data are put together with a representative sample of 2239 economic farming accounts to form a detailed model of the Danish agricultural production. The sector is divided into 28 farmtypes covering all major products on sandy and clayey soil. Each farmtype is consistent in terms of crop-livestock interactions and input-output levels. Not all farms will directly change their production in response to a change in demand. The farms who indeed are affected are identified by use of an dynamic economic model of the marketstructure of the Danish agriculture. Knowledge on these affected suppliers are used to perform system- expansion on all products. In this way the model delivers reliable cradle-to-gate data for each agricultural product to be used in life cycle assessment of basic food without using mass- or economic allocation. The data will be published in summer 2003 at http://www.lcafood.dk. Key words: agricultural products, life cycle inventory, input-output data |
