摘要
以特大城市南京市作为实证分析对象,通过耦合协调度和二分K均值聚类算法进行量化评价,利用多源数据创新市域城乡融合水平测度的思路与方法,探索性构建由城镇化发展水平、土地集约利用水平、设施均等化水平与城乡联系水平四大子系统所组成的评价指标体系。分析结果表明:①南京市域城乡融合系统耦合协调度的空间分布呈现出圈层扩散与点轴扩散并存的蛛网结构;②各子系统发展水平的分布特征具有一定差异,其中土地粗放利用与设施建设短板是制约发展协调地区进一步提升的关键因素,发展失调地区多受限于交通区位,城乡联系较为薄弱,因而发展动力不足。③各项指标发展水平的聚类特征明显,呈现出城市、城市边缘、小城镇、乡村4级9类的城乡融合单元。其中城市边缘地区细分为边缘新城、郊区副城、郊野公园3类单元,乡村地区则包括城市辐射型、观光休闲型、人口聚居型与偏远独立型4类。
The traditional urban-rural integration level measurement research is less involved inside the administrative units of cities and counties,leading to a lack of more refined cognition of urban-rural relations.For metropolis areas,the spatial development model of central urban areas and suburbs also needs to be further analyzed.This paper uses muti-source data to innovate the ideas and methods of measuring urban-rural integration level in metropolis,and construct an evaluation system composed of urban development level,land intensive level,facility equalization level and urban-rural connection level.Based on this,we carry out the quantitatively evaluation by coupling coordination degree and bisecting K-means clustering algorithm,and the metropolis Nanjing is taken as the empirical analysis object.The results of analysis show that,firstly,the spatial distribution of the coupling coordination degree of the urban-rural integration system in Nanjing presents a cobweb structure with both circle diffusion and pole-axis diffusion type.Secondly,the distribution characteristics of the development level of each subsystem is different to some extent.Among them,the extensive use of land and the shortcomings of facility are the key factors restricting the further improvement of the coordinated development areas.The areas with unbalanced development are mostly limited by the traffic location and have relatively weak urban-rural connection,thus the development motivation is insufficient.Thirdly,the clustering characteristics of different indexes are obvious,showing four levels of urban area,urban fringe,small town and rural area and with nine types.The urban fringe level can be subdivided into three types:new town,suburb subcity and countryside park,and the rural area level includes four types of villages:urban-radiated,sightseeing and leisure,densely populated,and remote and independent.The conclusions will provide a reference for the evaluation and spatial development strategies of urban-rural integration in metropolis.
作者
谢智敏
甄峰
Xie Zhimin;Zhen Feng(Department of Geography and Resource Management,the Chinese University of Hong Kong,Hong Kong 999077,China;School of Architecture and Urban Planning,Nanjing University,Nanjing 210093,Jiangsu,China;Provincial Engineering Laboratory of Smart City Design Simulation&Visualization,Nanjing 210093,Jiangsu,China)
出处
《地理科学》
CSSCI
CSCD
北大核心
2023年第1期1-10,共10页
Scientia Geographica Sinica
基金
国家社会科学基金重点项目(20AZD040)资助。
关键词
多源数据
大城市地区
城乡融合水平
耦合协调度
二分K均值聚类
multi-source data
metropolis
urban-rural integration level
coupling coordination degree
bisecting K-means clustering
