Most woodfuel (the collective term for fuelwood, charcoal, and other wood-derived fuels) is provided by natural dryland ecosystems inhabited by trees and/or bushes and is also often used as range. Hence the exploitation of this service is often a trade-off with the provision of forage. Overexploitation for woodfuel harvesting impairs the soil conservation service and it leads to soil erosion and hindered vegetation regeneration This spiral of service degradation encourages reforestation and afforestation for woodfuel provisioning, using drought and salinity tolerant tree species and strains (Sauerhaft et al. 1998). Fuelwood is used predominantly at the household level, for cooking and heating (Amous 1997), and may constitute a sizeable proportion of the energy consumed in many dryland countries (e.g. 57% in Senegal in 1999, IEA 2001).