基于Translog生产函数的中国汽车工业规模经济与替代弹性及价格弹性研究

使用迭代似无关回归(ISUR)方法估计了以生产工人、非生产工人和资本为投入要素的中国汽车工业Translog生产函数及中国汽车工业规模报酬的阶数,利用获得的估计计算了投入要素之间的替代弹性并通过替代弹性计算了要素需求的价格弹性。在此基础上,对中国汽车工业规模经济的状况、投入要素之间的替代或互补关系和要素价格变化对要素需求的影响进行了分析.结果显示:在所研究的期间内,中国汽车工业处于规模报酬不变阶段;生产工人和资本之间以及非生产工人和资本之间是替代关系,而生产工人和非生产工人之间是互补关系;对中国汽车工业而言,三个要素需求缺乏弹性。

A study about Scale Economies,Substitution Elasticity and Price Elasticity on Chinese Automobile Industry Based on Translog Production Function

Using Iterative Seemingly Unrelated Regression(ISUR)method,the Translog production function with production workers,non production workers and capital inputs and the degree of returns to scale about Chinese automobile industry are estimated.The substitution elasticity between input pairs are calculated by means of the gained estimation,and then the direct and cross price elasticity of demand for various inputs are computed by means of the substitution elasticity obtained.Further, some analyses are conducted on the condition of economies of scale,the substitution or complementarity relationship between input pairs,and the impacts of the change in the price of inputs on their demand in Chinese automobile industry.In detail,Chinese automobile industry is in the stage of constant returns to scale during period studied.Production workers and capital as well as non production workers and capital are substitutes,however,production workers and non production workers are complements.The demand for three inputs is lack of elasticity in Chinese automobile industry.