The international community recently agreed on a cost-e¤ective mechanism called REDD+ to reduce deforestation in tropical countries. However the mechanism would probably fail to induce an optimal reduction of deforestation. The aim of this article is to propose an alternative class of mechanisms for nega- tive externalities that is both e¢ cient and satis.es some fairness properties. It implements the Pareto optimum as a Nash Subgame Perfect Equilibrium. It is also individually rational, it takes into account environmental responsibility. An d a weak form of envi- ronmental responsibility can also be combined with envy freeness.