Definition:
Collective term for land-use systems and technologies in which woody perennials (trees, shrubs, palms, bamboos and so forth) are deliberately used on the same land management unit as agricultural crops and/or animals, in some form of either spatial arrangement or temporal sequence.
Source:
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Food and Agriculture Organization of the United Nations, AQUASTAT Web Site
United Nations Statistics Division (UNSD). 2008. Environment glossary