Taking Qinzhuanggou watershed in dry upland of northern Weihe River as a case

the interactive relationship of ecology

economy and society in small watershed system was analyzed. Using VENSIM software to build a dynamic model of SEE(society-ecology-economy)

with focusing on soil and water conservation

taking the methane pool as link

the goal of management of ecological subsystem

economic subsystem and social subsystem as the judgment basis

and quantitatively analyzing the comprehensive governance efficiency of ecological subsystem

economic subsystem and social subsystem. Moreover

the simulation of the development trend from 2011 to 2026 was made by using the dynamic model of SEE. The result showed that the 3rd scheme(subsistence mode that the per capita grain yield goals is 350 kg) can be taken as the optimization scheme for soil and water conservation and ecological design

the declining trend of Qinzhuanggou watershed system will be changed

such as water and soil loss will be controlled effectively

point and non-point source pollution will be eliminated

ecological agriculture will be developed

income per capita will be RMB 6 000 yuan

rural drinking water safety will be realized fully

the trip will be convenience

living environment will be improved.