Forestry and agriculture account for large shares of the global abatement potential (see figure 3) but pose special challenges (see figure 7). In forestry, tropical deforestation is exacerbated by weak landowner rights, and sustainable forestry is complicated by the difficulty of measurement and monitoring. In agriculture, implementing CO2e-efficient cultivation techniques is a challenge. National and international policymakers must devise special mechanisms, primarily based on market principles, to make forest management and sustainable agriculture economically attractive and to overcome obstacles and capture the full abatement potential of these sectors.