Comment traiter de l’impact des transformations de l’élevage sur les dynamiques des espaces ? Illustrations au Vietnam et dans les Pyrénées

How can the effects of the changes in livestock farming on the spatial dynamics be dealt with ? Illustrations from Vietnam and from the Pyrenees

The dynamics of change in livestock farming activities are central to the sustainable development of numerous grassland and pastoral regions. We present the framework for the development of integrated models of the interactions between land-use farming practices and their spatial distribution, the diversity and dynamics of farm holdings, and ecological systems and landscape dynamics. These modelling approaches include an explicit account of the land use decisions by the livestock farmers and scenarios of evolution in farms. These are discussed with local stakeholders, considering the impact of changes in public policies or local initiatives on land use. We illustrate two model conceptions projects, in two very different situations : in Vietnam where intensification is one answer to the increasing demand for dairy products, and in the Pyrenees mountains, where the decline of livestock production and stocking rate favour the development of the ash tree (Fraxinus excelsior).