This document discusses the role of forestry in maintaining and expanding forest carbon sinks. It notes that forests contribute to carbon sinks through afforestation/reforestation projects under the Clean Development Mechanism as well as by avoiding deforestation, which accounts for 18-25% of annual greenhouse gas emissions. While afforestation projects have faced challenges under the CDM, reducing emissions from deforestation and forest degradation (REDD) is seen as a promising mechanism but baseline setting and additionality pose difficulties. The document concludes future efforts could focus on diversifying rural economies, combining mitigation and adaptation projects, and promoting sustainable forestry and avoided deforestation.