黄河流域数字经济与生态效率时空演化及协调发展分析

Spatial-temporal Evolution and Coordinated Development of Digital Economy and Eco-efficiency in the Yellow River basin

为了准确把握黄河流域数字经济与生态效率发展水平及两系统的协调发展状况,以黄河流域的8个省(区)为研究对象,基于2012—2021年面板数据,运用熵权-TOPSIS方法、超效率SBM模型研究黄河流域数字经济与生态效率的时空演变特征,并通过耦合协调模型分析流域内数字经济与生态效率的协调发展特征。结果表明:1)黄河流域数字经济整体呈上升趋势,但发展不平衡,山东和陕西两省处于领先水平;2)生态效率差异先缩小后增大,呈现两极分化态势,由东向西递减,且上游持续低位,中下游波动性较大;3)数字经济与生态效率协调发展水平由勉强协调提升至初级协调,但区域发展失衡持续存在,仅山东省、河南省达到中级协调水平,多数省(区)仍处于初级协调发展水平,数字经济与生态效率协调发展任务依然艰巨。

To accurately grasp the development level of the digital economy and eco-efficiency in the Yellow River basin,as well as the coordination between the two systems,this study focuses on the eight provinces(regions)in the Yellow River basin.Based on panel data from 2012 to 2021,the entropy-weighted TOPSIS method and the super-efficiency SBM model were used to analyze the spatial-temporal evolution characteristics of the digital economy and eco-efficiency in the Yellow River basin.Furthermore,a coupling coordination model was employed to analyze the coordinated development characteristics of the digital economy and eco-efficiency within the basin.The results are as follows.1)The overall development of the digital economy in the Yellow River basin is on the rise,but its development is unbalanced.Shandong Province and Shaanxi Province are at the forefront of development.2)The difference in eco-efficiency initially narrows and then widens,showing a polarized trend.It decreases from the east to the west,with the upstream area consistently being at a low level,and the middle and lower areas exhibiting greater volatility.3)The level of coordinated development between the digital economy and eco-efficiency has been upgraded from reluctant coordination to primary coordination.However,regional development imbalances persist.Only Shandong Province and Henan Province have achieved intermediate coordination level,while most provinces(regions)remain at the primary coordination level.The task of achieving coordinated development between digital economy and eco-efficiency still poses challenges.