According to the measurement standard of coupling coordination degree and related research

it is clear that there were three phases in constructing the commodity-oriented eco-agriculture in Ansai County of North Shaanxi Province

which had the corresponding relation with coupling coordination degree of agricultural eco-economic system and industry-resource system.Since the implementation of grain for green project

great progress had been made in the construction of commodity-oriented eco-agriculture in Ansai County. The comprehensive development index of agriculture system rose from 0.275 2in 1999to 0.719 5in 2010 with coupling coordination degree of agricultural eco-economic system and industry-resources system decreased first(1999-2001)and then increased later(2002-2010).However

the development of coupling coordination relationship within the industry-resources system lagged far behind that within the agricultural eco-economic system.Correspondingly

the commodity oriented eco-agriculture in Ansai County had gone through two phases as well.The first phase included the ecosystem construction period and agro-industrial structure adjustment period

and the second phase was the agriculture system improvement period started in 2010.The improvement of eco-system and adjustment of agro-industrial structure advanced the growth of agricultural economy

however

the agro-ecological resources had not been reasonably and effectively utilized. Therefore

it is important to adjust agro-industrial structure and improve the chain network in order to change the contradictory situation between agro-industries and resources utilization and promote the development of the commodity oriented eco-agriculture.