The multidisciplinary and triple-stakeholder approach used to assist step 2 should support also step 3, which selects the bundle(s) of attributes to be valued. The main goal of step 3 is to elect bundle(s) of attributes (different combinations of NCOs at different levels) that can be correctly specified in economic terms and that can be effectively provided at the
spatial and temporal scales. Establishing these bundles as particular landscape functions, as done by Schmitz et al.
(2003), is a possibility. At this level it is important to identify and to model the interrelations between attributes bundled.
Bio-physical data and economic modelling appear to be useful tools to assist this taskmentioned activities and spaces. Hence, any assessment of MFA requires a multidisciplinary framework able to integrate these multifunctional activities, spaces and agents. Such a framework is far from being built. Economic valuation is just one piece in this complex puzzle. It is basically a tool to produce information on the relative value of environmental and recreational spatial-based services that may be delivered by multifunctional agriculture.