摘要
基于陕西省和甘肃省省域、市域与县域社会经济数据和空间数据,采用城市基尼系数、首位城市集聚度、城市建成区扩展强度分析及重心变化分析等研究方法,从不同空间尺度对陕西省和甘肃省1990—2015年的城市发展变化进行对比分析.结果表明,陕甘两省城市建城区扩张强度整体不断增强;甘肃省城市建城区重心折返迁移,陕西省迅速向东北方向转移.陕甘两地均为分散化的空间结构;甘肃省城市规模差异及要素集聚能力均先减后增,陕西省城市规模差异及要素集聚能力均不断增大;甘肃省地域范围广,不能兼顾所有城市发展,城市发展差异大,陕西省前期城市发展快,后期遇到发展瓶颈,发展受限.陕西省的城市规模整体上大于甘肃省,陕西省为强单中心城市结构,而甘肃省为双核心城市结构.陕甘两省城镇化水平整体不断增强;城市发展规模较大的城市,对其周边县域城镇化水平带动作用越强.县域尺度上,陕西省县域城镇化发展相对较协调,而甘肃省县域城镇化发展差异较大.自然环境因素是城市发展的基础驱动力;经济因素是城市发展的根本驱动力;不同空间尺度地区的联动发展不仅推动了大区域的发展,同时也带动了小区域的进步.
Based on socio-economic data and spatial data of municipalities and counties of Shaanxi Province and Gansu Province,the urban Gini coefficient,degree of urban agglomeration,the analysis of urban built-up area expansion intensity and gravity shift are used to study the urban development changes of Shaanxi Province and Gansu Province from different spatial scales during 1990—2015.And the results show that the urban construction and expansion intensity of Shaanxi Province and Gansu Province is continuously enhanced.The center of gravity of urban built-up areas in Gansu Province shifts back and forth,while it rapidly shifts to the northeast in Shaanxi Province.Both Shaanxi Province and Gansu Province are decentralized spatial structures.The differences in regional scale and the concentration of factors in Gansu Province are reduced first and then increased,while they are both increasing in Shaanxi Province.Due to wide geographical scope of Gansu Province,it is impossible to take it into account the development of all cities,therefore the difference in urban development is large.However,the cities in Shaanxi Province developed rapidly in the early stage,but they encountered development bottleneck in the later stage,resulting in the development of cities will be limited.The city size of Shaanxi Province is larger than that of Gansu Province.Shaanxi Province is a strong single-center urban structure,while Gansu Province is relatively scattered,which is the dual-core urban structure.The overall level of urbanization in Shaanxi Province and Gansu Province is continuously enhanced.And cities with larger urban development scales have stronger effects on the urbanization level of their surrounding counties.On the county scale,the development of urbanization in Shaanxi Province is relatively coordinated,while the development of urbanization in Gansu Province is quite different.Natural environmental factors are the basic driving force for urban development.Economic factors are the fundamental driving force for urban developm
作者
栗向阳
李丁
张宇欣
肖人荣
LI Xiang-yang;LI Ding;ZHANG Yu-xin;XIAO Ren-rong(College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,Gansu,China)
出处
《西北师范大学学报（自然科学版）》
CAS
北大核心
2020年第5期99-108,共10页
Journal of Northwest Normal University(Natural Science)
基金
国家自然科学基金资助项目(41271141)。
关键词
城市发展
空间尺度
夜间灯光数据
驱动因素
陕甘两省
urban development
spatial scale
night light data
driving factor
Shaanxi Province and Gansu Province
