Discussion of Problems in Agro-eco-system Assessment

Agro-eco-system is a large natural-social-economical complex system under the control of human beings,then establishing scientific and handy evaluation methods is a main step in the processes of regulation and policy decision to agro-eco-system.Based on summaring the research experiences from scientists in and out the country,theory,principles and methods of agro-eco-system assessment were summed up.