Impact of digital economy development on carbon productivity:An empirical analysis based on threshold effect and spatial spillover effect

Utilizing provincial panel data from 2014 to 2020,this study employs a fixed effect model,a threshold effect model,and a spatial lag model to empirically examine the correlation between digital economic development and carbon productivity.The findings indicate that digital economic development significantly contributes to the enhancement of carbon productivity in the long term.Furthermore,through instrumental variable method,replacement of explanatory variables and other methods to test its endogeneity and stability,the results remain robust.In terms of regional heterogeneity,the impact of digital economic development on carbon productivity is less pronounced in the central and western regions compared to the eastern region.Additionally,further investigation reveals that industrial structure upgrading and science and technology investment level exhibit different threshold effects on the influence of digital economy development level on carbon productivity.Moreover,there is a significant spatial spillover effect of digital economy development on carbon productivity with H-H and L-L agglomeration spatial correlation.

城镇化、产业结构升级和城乡收入差距互动关系研究--基于PVAR模型的实证

文章基于2005-2018年中国31个省份面板数据,构建面板向量自回归模型,实证分析了城镇化、产业结构升级和城乡收入差距三者之间的互动关系。研究结果显示:城镇化、产业结构升级和城乡收入差距三者间的关系表现出显著的区域异质性;产业结构升级对城镇化影响在东部和中部地区表现为正向,在西部地区表现为负向;城镇化和产业结构升级对城乡收入差距均表现出负向影响,且在中部地区表现为"U型"的负向关系。因此,应依据不同地区的实际情况,制定推进城镇化发展和产业结构升级的相关政策,以缩小城乡收入差距。

城镇化对城乡收入差距影响研究——基于山东省时间序列数据

本文利用山东省2006-2016年时间序列数据,建立多元回归模型,实证分析了城镇化水平、工业化率、财政分权以及农村劳动力转移对城乡居民收入差距的影响。研究发现,城镇化、农村劳动力转移对城乡居民收入差距的影响显著为负,表明城镇化水平的提高、农村劳动力的转移有助于缩小城乡居民的收入差距;而财政分权与城乡居民收入差距存在着正向关系,即财政分权的降低有助于缩小城乡居民的收入差距。本文的政策启示在于:一是稳步推进城镇化进程,加强城乡户籍制度改革;二是积极推进农业化发展,推动农村劳动力转移;三是合理控制财政支出,注重城乡福利保障体系建设。

城乡收入差距、产业结构调整与城镇化关系研究

本文基于山东省1984-2017年时间序列数据,构建由城乡收入差距、产业结构调整和城镇化三个变量组成的VAR模型,对其三者之间的相互作用关系及动态特征进行了实证研究。研究发现,山东省城镇化与产业结构调整二者间的格兰杰因果关系是双向的;城乡收入差距和城镇化具有负相关关系,而与产业结构调整关系为正。因此,在山东省经济发展过程中,应认识到城镇化与产业结构调整之间的相互关系,同时注重城镇化、产业结构调整对城乡收入差距的影响,从而进一步缩小城乡收入差距。

The relationship between rural surplus labor transfer,urbanization and income gap

Based on the time series data of Shandong province from 2001 to 2018,a VAR model consisting of three variables,namely,rural surplus labor transfer,urbanization and urban-rural income gap,was constructed,and the interaction among the three variables and their characteristics were empirically analyzed.The results show that urbanization and rural surplus labor transfer are Granger causation to each other,and there is a positive correlation between urban-rural income gap and rural surplus labor force in long-term equilibrium,while there is a negative correlation between urban-rural income gap and rural surplus labor force transfer.Therefore,it is necessary to fully recognize the relationship between the transfer of rural surplus labor,urbanization and urban-rural income gap,accelerate the urbanization construction,promote the rural surplus labor to gather in cities,and gradually narrow the urban-rural income gap.

数字技术赋能农民增收:作用机制与影响效应

基于区域异质性视角,利用2014—2021年我国30个省份面板数据,通过构建双重固定效应模型和空间杜宾模型从理论和实证角度考察数字技术与农民增收之间的影响关系、作用机制以及空间溢出效应。研究结果表明:数字技术显著促进了农民增收且具有长期增长效应,而推动城乡融合、促进农民非农就业和助力农村普惠金融发展是数字技术促进农民增收的重要路径;区域异质性显示,经济发达地区数字技术对农民增收的促进作用优于经济欠发达地区;进一步研究发现,数字技术对农民增收的影响存在显著的空间溢出效应。