投入产出弹性系数研究

Research on input-output elasticity coefficients

为了研究产业结构变动和产业部门间的关联程度,需要计算投入产出弹性系数。根据矩阵理论,对投入产出弹性系数进行分析,提出了一种新的确定弹性系数的方法。该方法不仅考虑直接消耗系数变动所引起的各个部门产出的相对变动,而且还考虑了最终需求结构对部门产出的影响。最后计算了中国1992年和1995年18部门的弹性系数,同时将投入产出表中部门间相互关系最为敏感的连接通过图表示出来,得到了一些有意义的结果,数值结果表明本方法是有效的有效性。

In order to analyze the structural change and interrelationship among industrial sectors, the input-output elasticity coefficients should be calculated. Based on matrix theory, this paper analysed input-output elasticity coefficients and proposes a new method to determine the elasticity coefficients. The proposed method not only considers the relative change of gross output of each sector due to the input coefficient changing, but also takes into account the influence of the final demand structure. Finally, according to China input-output tables in 1992 and 1995, the elasticity coefficients of 18 sectors are calculated by using the proposed raethod. In the paper the most sensitive connections among industrial sectors are represented in a graph, and some interesting results are available, the numerical results show that the proposed method is feasible and effective.