During land use conversion from cropland to forest land

establishing the flexible resource between ecological system and economic system is important in order to form an integrated eco-economic system. Having considered the possibilities

the authors propose three characteristics of an integrated system

namely: defined purposes and effects of establishing an ecological system and an economic system

a steady eco-(economic) system structure and favorable feedback relationships and interrelated ecological

economic and social targets. The authors also discussed standards for constructing and integrated system and analyzed the suitability of these for Xiannan Valley Demonstrating Area.