摘要
城乡界面是城市与乡村要素交织的过渡地带,随着城乡关系的变化,城乡界面表现出不同的时空演化规律。从"城乡平等"的理论逻辑出发,结合土地利用信息熵模型,对巩义市近25年三个时间节点的遥感影像进行分析,提炼出中小城市城乡界面的时空变化特征。结果表明:1时间尺度上的城乡界面演化大致划分为三个阶段:早期多以圈层式为主,中期往往呈现有所侧重的斑块状形态,后期则形成以城镇为核心的多中心格局。2空间尺度上的分异规律体现了中小城市与大城市城乡界面的差异。3城乡界面时空演化的动态性体现了城乡关系从"城市偏向型"向"城乡平等型"的转变。4以中心镇为核心的新型城乡界面反映了部分"强镇"已经达到了城镇的条件和影响力,其行政级别已名不副实,此类乡镇实质上为"事实性城市",镇级市改革有其必要性和可行性。
The urban-rural interface （URI） is the network intertwined with all kinds of urban and rural factors. With the change of the relationship between urban and rural areas, the urban-rural interface also shows the law of spatial-temporal heterogeneity. According to the theoretical logic of equality in urban and rural areas, combined with the land use information entropy model, this paper carried on the analysis to remote sensing image of three time nodes for Gongyi City in recent 25 years, and at last refined the characteristics of spatial-temporal evolution and differentiation of urban- rural interfaces in small and medium sized cities. The results showed that： （1） On the scale of time, the temporal and spatial evolution could be divided into three stages： In the early stage, its main pattern was circle. In the middle stage, it often showed the plaque morphology with special emphasis. In the last stage, it formed into a multi-center pattern with the cities and townships as the core. （2） On the scale of space, differentiation rules reflected the different types of urban- rural interface between small and medium-sized cities and metropolis. （3） The dynamism of spatial-temporal evolution reflected that the urban-rural relationship had changed from ＂urban oriented＂ to ＂urban-rural equality＂. （4） The new type of urban-rural interface, which took the townships as the core, reflected that some developed townships had reached the standard of a city in terms of condition and influence, that is to say, their administrative level had more significance in reality than in name. In fact, those townships have essentially been cities; therefore, it is necessary and feasible to have reform in town-level cities.
出处
《经济地理》
CSSCI
北大核心
2016年第11期1-7,共7页
Economic Geography
基金
国家自然科学基金项目(41671172
41430637)
教育部人文社会科学重点研究基地重大项目(14JJD790011)
河南省高校科技创新团队支持计划(16IRTSTHN012)
河南省高校哲学社会科学创新团队支持计划(2014-CXTD-03)
关键词
城乡界面
信息熵
时空演化
巩义市
urban-rural interface
information entropy
spatial-temporal evolution
Gongyi City
