中国数字产业效率的地区差异与敛散特征

Regional Differences,Convergence and Divergence Characteristics of China’s Digital Industry Efficiency

文章在界定数字产业效率概念的基础上,从投入与产出两个维度构建评价指标体系,运用Super-SBM模型、泰尔指数分解法、β收敛模型实证分析中国数字产业效率的地区差异与敛散特征。研究结果表明:中国数字产业效率水平呈现“东—中—西”逐渐降低的三级阶梯状分布特征;全国总体及三大地区区域内数字产业效率差异呈现逐渐上升趋势,区域间差异呈现东中部地区间逐渐缩小,东西部地区间、中西部地区间先扩大后缩小的“倒U”型特征,区域内差异是总体差异的主要来源;全国总体及三大地区均存在绝对β收敛和条件β收敛特征,且西部地区收敛速度最快,东部、中部地区收敛速度较慢。

Based on the concept of digital industry efficiency,this paper constructs an evaluation index system from the two dimensions of input and output,and uses Super-SBM model,Theil index decomposition method andβconvergence model to empirically analyze the regional differences and convergence and divergence characteristics of China’s digital industry efficiency.The results go as the following:The efficiency level of China’s digital industry presents a three-tiered distribution characteristic of“east—middle—west”decreasing gradually.China’s efficiency differences of digital industry as a whole and in the three regions show a gradually rising trend;the differences between the eastern and central regions gradually narrow,and the differences between the eastern and western regions and the central and western regions show an inverted U pattern,which expands first and then narrows.The intra-regional differences are the main source of the overall differences.Absoluteβconvergence and conditionalβconvergence are presented in the whole country and three major regions,and the convergence rate is the fastest in the western region,while the convergence rate is slower in the eastern and central regions.