For over a decade, the globalisation of environmental, economic and social issues has induced rapid modification in agriculture and land.

We propose a flexible and adaptable framework to assist the quick design of models dealing with the durability of the extensive livestock systems at the territorial scale.

Once the conditions that led to the creation of the Société Civile des Terres du Larzac (SCTL) have been introduced, the companion modelling approach used with this group of farmers is presented.

A combined agronomic and geographic approach has helped to explain forest agrosystem spatio-temporal dynamics in the forest regions of Guinea.