基于多源数据的武汉半城市化空间识别研究  

The spatial identification of peri-urbanization areas in Wuhan based on multi-source data

作　　者：叶菁 李东倪 关昱昕 YE Jing;LI Dongni;GUAN Yuxin(School of Public Administration,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]中国地质大学(武汉)公共管理学院,武汉430074

出　　处：《世界地理研究》2024年第11期120-134,共15页World Regional Studies

基　　金：国家自然科学基金项目(41871172);湖北省自然资源厅科技项目(ZRZY2023KJ05)。

摘　　要：在多源数据支持下,以武汉市为研究区,从功能、结构、水平、密度四个维度,以社会经济、土地利用、景观、人口四个特征切入,运用Densi-Graph核密度估算和引力模型综合量化半城市化地区的空间范围,分析其空间分布、土地利用及景观格局特征。结果表明:(1)以Densi-Graph法确定核密度等值线阈值拐点界定半城市化空间轮廓,结合基于格网的引力模型法识别半城市化空间集聚中心,能够有效解决数据的行政统计约束造成的特征属性表达不充分问题,实现城乡复杂情景下的多维度定量识别。(2)武汉市2020年半城市化空间面积为1025.49 km^(2),占市域总面积的11.97%,围绕城市核心区、武湖、沌口等城市副中心及阳逻、邾城、纸坊等新城中心的外缘呈“圈层+轴向”式发展。(3)半城市化地区主要用地类型为建设用地、耕地和水域,用地构成“半城半乡”,各类用地呈破碎化分布;景观类型具有多样性、异质性和破碎化程度较高的特点。With the support of multi-source data,this paper takes Wuhan as the research area,starts with four dimensions of function,structure,level and density,and starts with four characteristics of social economy,land use,landscape and population,and uses the Densi-Graph and the gravity model to quantify the spatial scope of the peri-urbanization areas comprehensively.On this basis,the paper analyzes the spatial distribution,land use and landscape pattern of periurbanization areas.The results show that:(1)Using the Densi-Graph method to determine the threshold point of nuclear density to define the spatial contours of peri-urbanization areas,and combining with the gravity model method based on the grid scale to identify the spatial agglomeration centers of peri-urbanization areas,it can effectively solve the problem that the administrative statistical constraints of the data do not adequately express the characteristic attributes,and realize multi-dimensional quantitative identification under complex urban and rural scenarios.(2)The peri-urbanization area of Wuhan in 2020 is 1025.43 km^(2),accounting for 6.35%of the total urban area,which is developed in a"circle and axis"pattern around the outer edge of the urban core,Wuhu,Zhuankou and other urban sub-centers and Yangluo,Zhucheng,Zhifang and other new city centers.(3)The main land use types in peri-urbanization areas are construction land,cultivated land and water,and the land use constitutes"half city and half township"with a fragmented distribution,and the landscape types are characterized by diversity,heterogeneity and high degree of fragmentation.

关 键 词：半城市化地区 空间识别 多源数据 引力模型 武汉 

分 类 号：C912.81[经济管理] F299.27[社会学]