Research on Regional Disparity and Its Influential Factors of Input-Output Coefficients

Input-output coefficients of various regions differ greatly; however, so far, time-series analysis has been widely applied to direct input coefficients, which lacks systematic cross-section research, let alone study on influential factors of their regional disparity. Based on national and 30 regional input-output tables of China (2002-2007), this paper concentrates on important input-output coefficients. Descriptive statistics analysis is firstly done from three aspects: great change in coefficients at the regional level from 2002 to 2007, comparison between coefficients at the national level and weighted coefficients at the regional level, and classification of scatter diagrams of coefficients. Then take coefficients with normal scatterplot distribution whose column sectors belong to industry as examples, by selecting a series of relative indices from scale, technical characteristics, ownership composition and sub-sector structure, regression models are established to find out main influential factors of input-output coefficients, on the basis of which further economic explanation can be made.