Combining levers for adaptation to climate change and mitigation of GHG emissions in Beaujolais

Abstract

Climate change exerts a major influence on wine production and quality. Several adaptation strategies have been proposed for vineyards over the short and long term, including the modification of varieties, adjustments to training systems, and soil management practices. Some of these viticultural levers may also enhance soil carbon sequestration, thereby contributing to climate change mitigation.

In this study, several adaptation and mitigation levers were tested—either individually or in combination—within the same vineyard plot: increased trunk height, reduced canopy height, varietal and intravarietal diversity, and mulching. Significant effects of these levers were observed on parameters influenced by climate change, such as cluster temperature, phenology, and berry composition. The combination of these levers conferred the full range of observed benefits on a single plot, without evidence of cumulative effects. Varietal and intravarietal diversity emerged as the most influential factor. Preliminary trials further demonstrated consumer acceptance of varietal changes within the context of Protected Designation of Origin wines.