Analysis on the economic spaceial gradient based on field theory——A case of Gansu Province

With the help of field theory in physics as a research tool,taking the input-output tables in Gansu Province as the main object,by using the production function gradient model and industry relevance gradient field model,we quantitatively analyzed the position,function and dynamic changes of industries in economic space and predicted the future status,role and changes of the industries in the industrial space in Gansu Province.The results showed that:(1)As to the three industry production gradients in recent 20 years,the primary industry fluctuated and showed a obvious uplift;The secondary industry changed a little,basically increased year by year,and its' change rate got much bigger;The tertiary industry changed smoothly,but there was a fluctuation in the prior period.(2)As to the industrial correlation gradient field in 2007,the status and role of the secondary industry in the economic space tended to rise,while the primary industry was relatively stable and the tertiary industry declined.(3)Energy and raw material oriented industries within the secondary industry were still superior to others,meanwhile,the status of equipment manufacturing,electronic information industry and light industry increased,while construction industry tended to decline.Through the production function gradient,influence gradient and induction gradient variations we found out the status,function,effect and changes of different industries in economic space in Gansu Province.It is helpful to provide scientific basis of industrial development policy.