生产函数法分析公路建设对国民经济的拉动作用

Analysis of the road construction's role in driving national economy with production function approach

在定量评价公路建设对国民经济拉动作用过程中,得到的公路建设和其他行业单位投资拉动GDP值的数据,可以为公路建设投资提供重要的决策依据。为此,采用C—D生产函数模型定量计算了全国、辽宁省、江苏省和黑龙江省公路建设投资对国民经济的拉动作用,以翔实的资料和统计数据系统地分析了公路建设投资与国民经济发展之间存在的定量关系。研究结果表明:全国和三省公路建设投资对国民经济的拉动作用要大于其他行业对国民经济的平均拉动作用;欠发达省市公路建设投资对国民经济的拉动作用远大于发达地区。

The unit investment-driven GDP of road construction and other industries,which is gotten from the quantitative evaluation on the road construction＇s role in driving national economy,can provide an important basis for the road construction investment decision-making.For this reason,the road construction investment＇s role in driving the national economy was calculated by C-D production function model for China,Liaoning Province,Jiangsu Province and Heilongjiang Province quantitatively,and the quantitative relations between road construction investment and national economic development were analyzed with detailed information and statistical data systematically.The results show that the positive effects of road construction investment on driving the national economy are greater than the average driving level of other industries in the country and the three provinces;the positive effects of road construction investment on driving the national economy of less developed area are greater than that of the developed area＇s.