摘要
处于转型过程中的老工业城市是易发生收缩的典型城市,该类城市的能源消耗、污染物排放与环境恶化程度往往高于其他城市,因此城市收缩影响下的老工业基地生态环境质量演变问题值得进一步探讨。本文基于PSR模型,利用熵值法测算2011—2020年东北老工业基地收缩城市的生态环境质量水平,分析了收缩城市生态环境质量的时空演变特征,并探讨了城市收缩对生态环境质量演变的影响效应。结果显示:①收缩城市生态环境质量水平整体不高,呈波动上升趋势,研究期内与增长城市的差距逐渐减小。生态环境质量改善程度与城市收缩程度呈显著的空间正相关关系。②城市收缩程度对生态环境质量的影响具有阶段性差异,在城市收缩的初期、中期、后期依次表现为无显著影响、负向影响和正向影响。③从全局角度来看,城市收缩程度对收缩城市生态环境质量演变具有显著的正向影响,财政水平和资源依赖程度对其作用机制存在门槛调节效应。
The old industrial cities in the process of transformation are prone to shrinking.The energy con-sumption,pollutant emissions,and environmental degradation of these cities are generally higher than those of other cities.Therefore,it is worthwhile to further explore the evolution of the ecological environment quality of old industrial bases under the influence of urban shrinkage.This paper uses the 34 municipal districts of prefec-ture-level cities in the Old Industrial Base of Northeast China as the research units.The research period is from 2010 to 2020.Firstly,the entropy value method is used to calculate the ecological environment quality index and its 3 dimensions index of ecological environment pressure,state,and response with the help of PSR(Pres-sure-State-Response)environmental assessment model,and the temporal and spatial evolution characteristics of the ecological environment quality of shrinking cities in the Old Industrial Base of Northeast China are ana-lyzed.And then,based on the panel data regression model,the effect of urban shrinkage on ecological environ-ment quality and its heterogeneities are analyzed.Finally,based on the threshold regression model,this paper analyzes the nonlinear effects of urban shrinkage on ecological environment quality at different degrees of shrinkage.The results show that:1)20 cities out of 34 cities in the Old Industrial Base of Northeast China have experienced shrinkage,and most of them are resource-based cities and old industrial cities.The overall level of the ecological environment quality of shrinking cities is low,but shows a fluctuating upward trend.During the research period,the gap between shrinking cities and growing cities is decreasing.Besides,there is a significant spatial positive correlation between the improvement of ecological environment quality and the degree of urban shrinkage.2)From the perspective of different urban shrinkage stages,the impact of urban shrinkage on ecological environment quality is not significant in the initial stage of shrinkag
作者
柳力玮
刘艳军
辛奕霖
付慧
金雨
吴函纯
Liu Liwei;Liu Yanjun;Xin Yilin;Fu Hui;Jin Yu;Wu Hanchun(School of Geographical Sciences,Northeast Normal University,Changchun 130024,Jilin,China)
出处
《地理科学》
CSCD
北大核心
2024年第7期1237-1248,共12页
Scientia Geographica Sinica
基金
国家自然科学基金项目(42171191,41771172)资助。
关键词
城市收缩
生态环境质量
PSR模型
东北老工业基地
urban shrinkage
ecological environment quality
PSR model
the Old Industrial Base of North-east China
