Agroforestry systems as a form of land-use have been practiced around the world for millennia and have recently been promoted as one that provides many beneficial environmental and economic services such as reduction of soil erosion, abatement of pollution and diversification of farm income. In addition, agroforestry systems have been shown to be an effective land-use system for long-term carbon (C) storage as well as for the reduction of greenhouse gas emissions, particularly as compared with traditional agricultural systems such as annual cropping. Agroforestry as a land-use system may not be readily adopted by landowners as many lack the experience with growing trees on farm and trees can be a nuisance for the operation of large farm equipment. The economics of incorporating trees on farm also may not be very attractive due to the long-term nature of growing trees. Policies recognizing the ecological services, the C benefit in off-setting greenhouse gas emissions in particular, should be developed for agroforestry systems to promote this land-use system.