One of the features of the new scientifi c framework that is emerging as a response to global environmental crises is the attempt to dissolve classical nature and culture separation and to overcome excessive specialization in unconnected fi elds. In this context, disciplines as geography, agroecology, landscape ecology and environmental history try to integrate social science and natural science to obtain a better understanding of environmental problems and to fi nd appropriate solutions. Land use and land cover change, one of the most relevant components of global change in terrestrial ecosystems, can be studied at a local and regional level through an environmental history analysis, which is specially useful considering temporal and spatial scale dependency of such phenomena. In this communication we report the fi rst results of an interdisciplinary research on landscape changes and heritage evaluation that is being carried out in Olzinelles valley (Montnegre, NE Spain), considering the period 1851-2006. We use the concept of socioecological heritage to describe a selection of evidences of historical evolution of landscape, and we applied it to the study area, where we have detected 263 elements. We report an important depopulation process with a loss of 85% of the population of 1924 in 2006. Future research will try to correlate demographic evolution of the twentieth century to changes in land use and land cover.