1990—2020年郑州城市扩张时空特征分析  

Spatio-temporal characteristics of urban expansion in Zhengzhou from 1990 to 2020

作　　者：蔡恩香 寇紫薇 孟珂 张杨[2] 侯贺平[3] CAI Enxiang;KOU Ziwei;MENG Ke;ZHANG Yang;HOU Heping(College of Resource and Environment,Henan Agricultural University,Zhengzhou 450002,China;College of Urban Economics and Public Administration,Capital University of Economics and Business,Beijing 100070,China;College of Forestry,Henan Agricultural University,Zhengzhou 450002,China)

机构地区：[1]河南农业大学资源与环境学院,河南郑州450002 [2]首都经济贸易大学城市经济与公共管理学院,北京100070 [3]河南农业大学林学院,河南郑州450002

出　　处：《河南农业大学学报》2022年第4期674-684,共11页Journal of Henan Agricultural University

基　　金：国家社科基金重大项目(20ZDA086);河南省哲学社会科学规划项目(2019CJJ078);郑州市软科学研究计划项目(2020RKXF0105)。

摘　　要：【目的】通过刻画城市扩张时空特征,实现城市扩张精准管控,推动城市高质量发展。【方法】基于多时相遥感影像解译土地利用数据,对郑州1990—2020年城市扩张时空特征进行定量分析,并通过扩张用地来源和人口经济弹性系数评价城市扩张效应。【结果】(1)1990—2000年、2000—2010年和2010—2020年郑州城市扩张总体呈现“平稳—快速—趋缓”的趋势,中心城区主要向东部和南部扩张,郊区县市城市扩张主要偏向中心城区。(2)1990—2000年城市扩张主要为填充式或蔓延式为主的离散扩张,各辖区以中低速扩张为主;2000—2010年呈蔓延式或跳跃式为主的集聚扩张,各辖区多数为高速扩张;2010—2020年主要为蔓延式或跳跃式为主的离散扩张,各辖区均为中低速扩张。(3)研究期间郑州市耕地转化为城市建设用地的比例不断下降,其他建设用地转化比例持续上升,有利于粮食安全和生态保护。(4)城市扩张的人口弹性指数和经济弹性指数变化表明城市用地人口和经济承载力增强,社会经济效益明显提升。【结论】研究对郑州市城市规划管理和新型城镇化发展具有重要参考价值。【Objective】Analysis of the spatio-temporal characteristics of urban expansion can help achieve precise control of urban expansion and improve the quality of urban development.【Method】The land use data interpreted by multi-temporal remote sensing images from 1990 to 2020 were used to quantitatively analyze the spatio-temporal characteristics of the urban expansion of Zhengzhou,and the effects of urban expansion was evaluated from two aspects:the source of expansion land and the models of land-population elastic coefficient and economic-land elastic coefficient.【Result】(1)In 1990—2000,2000—2010,and 2010—2020,urban expansion of Zhengzhou generally showed a trend of“stable-fast-slow”.The central urban area expanded mainly to the east and south,and the urban expansion of suburban counties was mainly around the central urban area.(2)From 1990 to 2000,the urban expansion was mainly infilling or sprawling type of discrete expansion,and most of the districts were medium-speed and low speed expansion;From 2000 to 2010,there was a sprawling or leaping type of agglomeration expansion,and most of the districts were expanding at a high speed;From 2010 to 2020,it is mainly sprawling or leaping type of discrete expansion.All districts are expanding at medium and low speeds.(3)During the study period,the proportion of arable land conversion for urban expansion in Zhengzhou kept declining,while the proportion of other construction land sources continued to rise,which is beneficial to food security and ecological protection.(4)The changes of land-population elasticity and urban economic-land elasticity indicated that the population and economic carrying capacity of urban land had increased,and the socio-economic benefits of urban expansion had increased significantly.【Conclusion】The research has important reference value for the urban planning and the new-type urbanization in Zhengzhou.

关 键 词：城市扩张 时空特征 效应 弹性系数 郑州 

分 类 号：X321[环境科学与工程—环境工程]