Changes in consumption processes have been recognised as important steps towards sustainable development. The aim of this paper is to give an overview of research on sustainable consumption and to sketch new approaches in economic modelling of sustainable consumption. A special focus is given to the relationship between stocks and flows as well as consumer services as being welfare relevant. From that three different steps of modelling are proposed, where the links between material goods demand and consumer services demand as well as the stock-flow relationship can be made explicit.
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