Based on Qiuzhuang village, the changes in flow path and efficiency of energy, matter and founding were analysed in the process of productivity increase and structure change of agroecosystem, to reveal the basic laws of agro-ecosystem evolution in this region. The results showed that Qiuzhuang has formed a preliminary agroecosystem model adapted to local resources. The adjustment of production structure was the inevitable requirement for system development and the adjusted structure could promote a large sc...