College of Agricultural Sciences,Arba Minch University,Arba Minch,P.O.Box 21,Ethiopia;
College of Natural Sciences,Addis Ababa University,Addis Ababa,P.O.Box 3434,Ethiopia;
The World Agroforestry Centre(ICRAF),UN Avenue,Nairobi,P.O.Box 30677,Kenya;
Determinant factors; Livelihood diversification; Household incomes; Prosopis juliflora invasion; Simpson’s diversification index(SDI);