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中文摘要：
借助物理学中的场理论作为研究工具,对柯布-道格拉斯生产函数和列昂惕夫投入产出方法进行了改进和处理,以产出函数梯度模型和产业关联梯度场模型对甘肃省三次产业的产出效率和各产业在经济空间中的地位、作用及其动态变化情况进行了量化分析。研究结果表明：1）近20年来甘肃省三次产业的产出梯度中,第一产业波动较大,期间有一个明显的隆起;第二产业变化较小,基本呈现逐年增大、前慢后快的特点;第三产业变化平稳,前期有所起伏。2）2007年甘肃省产业关联梯度场中,二产在经济空间中的地位和作用趋于上升,一产相对稳定而三产有所下降。3）二产内部能源原材料行业仍占主导地位,装备制造、电子信息和轻工行业的地位有所上升,建筑业地位趋于下降。通过产出梯度、影响力梯度和感应度梯度的变化判断出不同产业在经济空间中的地位、作用、影响及其变化,为甘肃省制定相应的产业发展政策提供科学依据。
英文摘要：
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.
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