The European Alps are experiencing accelerated climatic and environmental changes that ultimately affect regional carbon dynamics. Alpine ecosystems — from forested slopes and grasslands to permafrost soils, wetlands, and glacier forelands — exhibit highly heterogeneous carbon dynamics driven by steep climatic gradients, complex topography, and diverse land-use histories. Understanding how carbon stocks and fluxes respond to warming, altered precipitation regimes, vegetation shifts, permafrost degradation, wildfires and land-use changes is essential for predicting future carbon balance and informing mitigation and adaptation strategies. This session brings together experts working on all facets of carbon dynamics in Alpine environments. We welcome contributions presenting new estimates of carbon stocks in vegetation and soils, measurements of carbon fluxes (e.g. CO₂ and CH₄ fluxes from chamber or eddy-covariance methods), remote-sensing approaches designed to explore spatial and temporal variability in carbon dynamics, manipulation experiments, as well as results from interdisciplinary monitoring networks. We also encourage submissions presenting process-based, statistical, or machine-learning models to represent ecosystem carbon responses, upscale plot-level data, quantify uncertainties, or forecast future trajectories under changing climate and land-use scenarios. By integrating experimental, observational and modelling perspectives, this session aims to promote interdisciplinary dialogue and foster integrated insights into the current and future carbon balance of the Alpine region.