ANR ACCLIMATE analyzes how land markets and regulations affect the measurements of the costs of climate change for agriculture and other land-based sectors

By altering the profitability of different land uses (agriculture, forestry, urban, other), climate change is likely to induce changes in land use by encouraging landowners to adapt and favor the most profitable uses under the new climatic conditions. Under the assumption of competitive land markets, the literature has assessed the impact of climate change on the land sector, as well as the associated costs. However, this assumption is challenged by numerous examples where land regulations prevent owners from freely disposing of their property. The main aim of ACCLIMATE is to isolate the role of land tenure regulations on the adaptation of agents to climate change, in order to propose a reassessment of the costs of climate change for the soil sector, and agriculture in particular. In particular, ACCLIMATE aims to propose methodological corrections to the approaches commonly used in the literature, in order to separate the costs actually attributable to climate change from those attributable to land regulations. Applied to the case of France, where the majority of land rules and regulations have been in place for decades, the project partners will attempt to identify theoretically and empirically the consequences of land regulations on the surface areas allocated and the value of the four major land uses (agriculture, forest, urban, other). Based on the econometric results obtained, ACCLIMATE partners will evaluate the impacts of possible land reforms using a spatially explicit equilibrium model, in order to identify those that are desirable for limiting the costs of climate change.