To be useful for extension services (farmers advising and agricultural policies orientation), farm typology must be updated regularly. Nevertheless, typology updating can't be reduced to build ex nihilo a new typology. First, the previous typology provides essential references to analyse farm trajectories and to caracterize local agricultural changes. Then, the elaboration of the new typology is mainly based on the results of this first analysis.
Le croisement de plusieurs sources d’information (modèles d’altitude, relevés cadastraux, enquêtes) permet de restituer, par la carte et l’image numériques, la façon dont le paysage d’une commune du Haut-Jura s’est modifié depuis plus d’un siècle. On arrive ensuite, avec les mêmes moyens techniques, à simuler l ’évolution future du paysage. Les modifications visuelles qui en résultent, pour les itinéraires de ski de fond tout particulièrement, sont mises en évidence.
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