借助中国2000-2014年省际面板数据,本文运用面板门槛模型探讨产业结构升级对城乡收入差距的影响,并分析人力资本及其两个维度在其中的调节作用。研究发现:整体而言,产业结构升级缩小了城乡收入差距,但其影响存在空间分异,而人力资本在其中发挥着重要的调节作用;在不同区域层面,东部地区呈现负向"U"型非线性影响;中部地区不存在统计意义上的门槛效应;西部地区人力资本存量可显著抑制产业结构升级对城乡收入差距的扩大效应,人力资本结构却加剧了此效应。进一步分析发现,仅有北京、辽宁、上海处于人力资本的最优区间,提高人力资本存量、优化人力资本结构仍是目前绝大多数省份促进产业结构升级缩小城乡收入差距的重要着力点。
Based on the inter-provincial panel data of China from 2000 to 2014,this paper discusses the impact of upgrading of industrial structure on the urban-rural income gap by using the panel threshold model,and analyzes the regulatory role of human capital in its two dimensions. The study finds that,as a whole,the upgrading of industrial structure narrows the urban-rural income gap,but its influence has spatial differentiation,and human capital plays an important regulatory role; the result of sub-regional study shows that the eastern region has a negative"U"-shaped of non-linear effect; the central region does not exist the statistical sense of the threshold effect; the western region of human capital stock can significantly inhibit the expansion effect of upgrading of industrial structure on urban-rural income gap,but human capital structure has exacerbated this effect. Further analysis shows that only Beijing,Liaoning and Shanghai are in the optimal range of human capital,thus improving the human capital stock and optimizing the human capital structure is still an important focus for the vast majority of provinces to promote the upgrading of industrial structure to narrow urban-rural income gap.