The role of agro-forestry-animal husbandry ecoeconomic system in agricultural sustainable development

The concept and connotation of agro-forestry-animal husbandry ecoeconomic system (AFA) are discussed．Taken AFA in Kaifeng Sandy Soil Experimental Station as an example，the feasibility for promoting agriculture，forest and animal husbandry and obtaining ecological，economical and social benefits in the same time is put forward．The important role of AFA isfigured out．