The use of carbon dioxide removal (CDR) techniques is essential to achieving the objectives of the Paris agreements. In order to achieve this, it is necessary to introduce negative emission technologies as soon as possible. Among these technologies, CDRs, and more particularly CDRs applied to land surfaces, seem to be good candidates. However, until now, the methodologies used to estimate the efficiency of CDRs have taken very little account of certain parameters such as the turnover time of biomass products. This article proposes an innovative methodology for this purpose and applies it to estimate the storage potential of various CDRs. Results suggest, for example, that afforestation/reforestation (AR) appears to be more effective in China, while bioenergy with carbon capture and storage (BECCS) is more effective in South America and Africa. Nevertheless, the authors also highlight the importance of considering the evolution of the efficiency of fossil fuel substitution (FFS) techniques in parallel to refine the estimate of the potential of CDRs, thus stressing the complexity of such a task.