基于格网尺度的黄河中游地区经济城镇化与PM_(2.5)浓度的脱钩关系研究  

Study on the Decoupling Relationship between Economic Urbanization and PM_(2.5) Concentration in the Middle Yellow River Region Based on Grid Scale

作　　者：沈威 曹威威[1] SHEN Wei;CAO Weiwei(College of Geography and Tourism,Luoyang Normal University,Luoyang Henan 471022,China;College of Geography and Environmental Science,Henan University,Kaifeng Henan 475004,China)

机构地区：[1]洛阳师范学院地理与旅游学院,河南洛阳471022 [2]河南大学地理与环境学院,河南开封475004

出　　处：《生态经济》2025年第1期132-139,共8页Ecological Economy

基　　金：国家自然科学基金项目“山地平原过渡带生态系统健康的影响机制及分区调控研究”(42401378);河南省高等学校重点科研项目_软科学研究计划“黄河流域生态系统健康驱动机制及多尺度调控路径”(24A170023)。

摘　　要：针对当前经济城镇化参量公里网格数据的缺乏,以黄河中游地区为例,提出一种利用1995—2018年高精度土地利用栅格数据和统计年鉴数据的经济城镇化参量空间化模拟方法,并分析格网尺度下黄河中游地区经济城镇化与PM2.5浓度的脱钩关系演变。结果表明:(1)黄河中游地区经济城镇化水平呈现出以兰西城市群、西安城市圈、太原城市圈、郑州—洛阳城市带为核心的多核心圈层结构。(2)在空间格局演变上,不同区域经济城镇化的扩张模式存在差异。受地形限制和水文条件限制,洛河流域、汾河流域、关中平原、太原城市圈经济城镇化呈现以中心城市为核心的带状扩张特征;兰西城市群、郑州—洛阳城市带、呼和浩特市呈现以中心城市为核心的圈层式扩张特征。(3)2005年之后,黄河中游中东部地区开始出现脱钩转折点;2010年之后,黄河中游西部地区开始出现脱钩转折点,但由于西部大开发战略的实施,导致2015—2018年甘肃和宁夏南部扩张负脱钩区面积显著增加,经济城镇化与环境污染的脱钩关系再次发生转变。In view of the lack of current grid data of economic urbanization,this study took the middle Yellow River as an example,and proposed a spatial simulation method of economic urbanization parameters using high-precision land use grid data and statistical yearbook data from 1995 to 2018.The spatial and temporal pattern of economic urbanization and the decoupling relationship between economic urbanization and PM2.5 concentration in the middle Yellow River were analyzed.The results show that:(1)The level of economic urbanization in the middle reaches of the Yellow River shows a multi-core circle structure with the core of Lanxi city cluster,Xi’an city circle,Taiyuan city circle and Zhengzhou-Luoyang city belt.(2)In the evolution of spatial pattern,there are differences in the expansion mode of economic urbanization in different regions.The economic urbanization of the Luohe River basin,the Fenhe River basin,Guanzhong Plain and Taiyuan metropolitan area shows the characteristics of belt expansion with the central cities as the center due to the limitations of terrain and hydrological conditions.Lanxi city cluster,Zhengzhou-Luoyang city belt and Hohhot show the characteristics of circular expansion with the central cities as the core.(3)After 2005,the central and eastern parts of the middle Yellow River began to show a decoupling turning point.After 2010,the western region of the middle Yellow River began to show a turning point of decoupling.However,due to the implementation of the Western development policy,the area of expanding negative decoupling areas in Gansu and southern Ningxia increased significantly from 2015 to 2018,and the decoupling relationship between economic urbanization and PM2.5 concentration changed again.

关 键 词：经济城镇化 土地利用 回归模型 PM2.5浓度 脱钩状态 

分 类 号：F291.1[经济管理—国民经济] F062.2