长江经济带生态效率的时空分布特征及演化趋势分析  

Analysis of Spatial-temporal Distribution and Evolution Trend of Ecological Efficiency in the Yangtze River Economic Belt

作　　者：易颖 黎振强[1] 游肖月 YI Ying;LI Zhenqiang;YOU Xiaoyue(School of Economics and Management,Hunan Institute of Science and Technology,Yueyang 414006,China)

机构地区：[1]湖南理工学院经济与管理学院,湖南岳阳414006

出　　处：《湖南理工学院学报（自然科学版）》2024年第1期52-58,共7页Journal of Hunan Institute of Science and Technology(Natural Sciences)

基　　金：湖南省教育厅科学研究重点项目“数字经济发展和产业结构升级对长江经济带生态效率的影响效应研究”(22A0468);湖南省研究生科研创新项目“数字经济发展、产业结构升级对长江经济带高质量发展的影响效应研究”(CX20231197);湖南省教育科学规划项目“‘双一流’建设背景下地方高校与区域经济协调发展研究”(XJK22BJG002)。

摘　　要：基于2008—2021年省市面板数据,采用超效率SBM模型测算长江经济带沿江11个省市的生态效率,采用Dagum基尼系数及其分解方法剖析生态效率空间分布差异的构成及来源,采用Kernel密度估计方法探究生态效率的动态演化趋势.研究表明,在时间上,长江经济带总体生态效率稳定提升,但各省市的生态效率存在明显的阶段性和非平衡性特征;在空间上,三大城市群的生态效率由“下游>上游>中游”演化为“下游>中游>上游”分布格局.城市群区域间差异是构成长江经济带总体差异的主要来源.总体生态效率存在两极分化现象,城市群区域内各省市生态效率发展不平衡,区域间生态效率的绝对差异呈缩小态势.因此,沿江省市应加强技术创新和环境污染治理,立足区域特点,走因地制宜的特色化发展道路,同时,加强区域专业化分工与协作,以提高生态效率.Based on the 2008-2021 provincial panel data,the super-efficiency SBM model is used to estimate the ecological efficiency of 11 provinces and cities along the Yangtze River Economic Belt,Dagum Gini coefficient and its decomposition method are used to analyze the components and sources of the spatial distribution differences of ecological efficiency,and Kernel density estimation method is used to explore the dynamic evolution trend of ecological efficiency.The results show that:in time,the overall ecological efficiency has been improved steadily,but there are obvious stages and non-equilibrium characteristics in provinces and cities of the Yangtze River Economic Belt,the ecological efficiency of the three urban agglomerations evolves from“Lower region>Upper region>Middle region”to“Lower region>Middle region>Upper region”;the difference of ecological efficiency between urban agglomerations in the Yangtze River Economic Belt is the main source of the overall difference;the overall ecological efficiency has two-level differentiation,the ecological efficiency development of cities is unbalanced and the absolute gap of ecological efficiency between regions is narrowing.Therefore,the cities along the Yangtze River should strengthen the technical innovation and environmental pollution control,take the characteristic development path according to the local conditions and the regional characteristics,and strengthen the regional specialization division and cooperation so as to improve the ecological efficiency.

关 键 词：生态效率 时空分布 Dagum基尼系数 Kernel密度估计 长江经济带 

分 类 号：F062.2[经济管理—政治经济学]