基于中国中部地区2010-2018年城市面板数据,综合运用空间分析等方法分别对中部地区PM2 5浓度的时空差异、空间演变特征和空间相关性进行探究,并构建环境库兹涅茨曲线(EKC)模型,检验可能存在的EKC关系.结果表明:①2010-2018年中部地区PM2.5浓度变化幅度差异较大,研究期间PM2.5年均浓度整体上呈现波动下降趋势;②中部地区PM2.5浓度呈现出东北地域高、其他地域低的空间分布;③2010-2018年中部地区城市化与PM2.5浓度存在空间正相关关系;④中部地区PM2 5污染与城市化存在倒"N"形环境库兹涅茨曲线关系.本研究为探索PM2.5浓度与城市化的演变关系提供了新的研究视角,为实现中部地区环境保护与城市健康可持续发展提供借鉴,也可以为相关部门制定降低PM25的相关政策提供指导.
Based on the urban panel data of central China from 2010 to 2018,the PM2.5 in Cen-tral China is analyzed by using spatial analysis and other methods.Explore the temporal and spa-tial differences,spatial evolution characteristics and spatial correlation of concentration,and con-struct the Environmental Kuznets curve(EKC)model to test the possible EKC relationship.The results show that:① the PM2 5 concentration in the Central China varied widely from 2010 to 2018,and the annual average PM2 5 concentration exhibited an overall fluctuating decreasing trend during the study period;② the PM2.5 concentration in the Central China exhibited a spatial distribute on that was high in the northeastern region and low in the other regions;③ a positive spatial correlation existed between the PM2 5 concentration and urbanization in the Central China from 2010 to 2018;④ and there was an positive N-type EKC relationship between the PM2.5 pol-lution and urbanization in the Central China.This study provides a new perspective for explor-ing the relationship between the PM2 5 concentration and urbanization,an important reference for achieving environmental protection and sustainable urban development in the Central China,and guidance for relevant departments to formulate PM2 5 reduction policies.