It is called agroforestry, and one source describes it as “a system in which cultivation of trees is combined with field crops or pasture in an ecologically... sustainable manner. ”
وهو ،‏ كما يصفه احد المراجع ،‏ « نظام يعتمد تنمية الأشجار ونباتات الحقول او الكلإ في آن واحد بطريقة .‏ .‏ .‏