The Effects of Tree-Alfalfa Intercropped Systems on Wood Quality in Temperate Regions

Agroforestry is a dynamic, ecologically based, natural resource management system that, through the integration of trees in farm and rangeland, diversifies and sustains production for increased social, economic and environmental benefits (Leakey, 1996). Apart from the social and cultural advantages of growing trees, recreational benefits for human being, as well as improvement in wildlife, there are other advantages associated with planting trees with crops. There are five mechanisms through which trees contribute to the agricultural environment (Yin, 2004). These include reducing wind velocity and wind erosion, controlling sheet and rill erosion, mediating solar radiation and regulating soil and air temperatures, increasing field moisture, and improving soil nutrients.