大城市规模增长对生态宜居性的影响  

The impact of urban scale expansion on ecologicallivability in major cities

作　　者：丁碧莹 丁蕾 DING Bi-ying;DING Lei(School of Urban Construction and Transportation,Hefei University,Hefei 230601,China)

机构地区：[1]合肥大学城市建设与交通学院,安徽合肥230601

出　　处：《河南城建学院学报》2025年第2期90-98,共9页Journal of Henan University of Urban Construction

基　　金：安徽高校人文社会科学研究重点项目(SK2021A0600)。

摘　　要：基于中国80个大城市2006—2021年的面板数据,构建城市生态宜居性测度指标体系,深入探究城市人口数量和用地规模对生态宜居水平的影响。结果显示,人口数量对大城市生态宜居性的影响并不显著,用地规模的增长对大城市的生态宜居水平具有显著的促进作用。城市用地规模对生态宜居性的影响呈现明显的异质性,当用地规模为800~1 000 km~2时,对城市生态宜居性的提升作用最为明显;用地规模过小或过大对生态宜居性的促进效应均会减弱。用地规模增长对超大和特大城市的生态宜居性的正向效应更为显著,对其他城市的提升作用有限。Based on panel data from 80 major cities in China spanning from 2006 to 2021,an evaluation index system for measuring urban ecological livability is constructed to delve into the impact of urban population size and land use scale on ecological livability.The research findings indicate that the influence of population size on ecological livability in major cities is insignificant,while the expansion of land use scale has a significant positive effect on enhancing ecological livability in these cities.Further analysis reveals that the impact of urban land use scale on ecological livability exhibits notable heterogeneity.Specifically,when the land use scale ranges from 800 to 1000 km 2,the enhancement effect on the ecological livability of cities becomes most pronounced;whereas,when the scale is too small or too large,its promotional effect diminishes.Additionally,the expansion of land use scale exerts a more pronounced positive effect on the ecological livability of megacities and metropolises,while the enhancement effect on other cities remains limited.

关 键 词：人口数量 用地规模 生态宜居性 城市 

分 类 号：TU984[建筑科学—城市规划与设计]