Waldausdehnung in zwei Regionen des Schweizer Berggebiets: eine integrative Analyse
Forest expansion in two Swiss mountain regions: an integrative analysis The “Mountland” project analyzes climatic and land-use changes in mountain regions from an integrative perspective. One key interaction between the forest and agricultural sector is agricultural land abandonment and the subsequent forest expansion in mountain regions. To understand and assess this phenomenon, socioeconomic developments as well as ecological mechanisms of forest expansion must be taken into account. This article summarizes results from a simulation study of land abandonment applying the land-use model «Aluam» in two case study regions of Switzerland (Jura [VD] and Visp [VS]) which explicitly takes into account socioeconomic and ecological drivers. Two policy scenarios (“status quo” and “liberalization”) including climate change projections are presented and discussed. Results show that land abandonment and the corresponding consequences for ecosystem services provision strongly differ between scenarios and case study regions. In addition to this heterogeneity, thresholds and interactions between economic and ecological performances are important aspects in the context of land abandonment. As a consequence, policy measures that should steer against land abandonment and subsequent forest expansion have to consider local conditions. Spatial planning methods and instruments represent key elements in this process.