关键词: 主体功能区划, 点-轴系统, 地域功能, 空间结构, 人口迁徙大数据, 空间解析

Abstract:

As the basic system of national spatial development and protection in China, the spatial structure of the major function zoning in China is an important constrain index for various levels of spatial planning and the key parameters for the precise landing of the major function zoning. In this paper, the planar function zones are brought into the structure of the point-axis system, and the scientific connotation of the point-axis structure of the major function zones is explored. This study aims to explore the major function zoning of China at the national and provincial levels from three aspects: the elements of the point-axis structure of the major function zones, the spatial differentiation between the function zones and the point-axis structure and the interaction between the function zones and the point-axis structure. The results show that: (1) the map of major function zoning in China contains the point-axis system structure. The urbanization zones is a collection of polar cores of different grades and the development axis is determined by the level and spatial distribution of polar cores; (2) the point-axis region development system, the agricultural development and ecological security zones show the characteristic of layer structure, the farther away the axis is, the lower the proportion of urbanization zones is and the higher the proportion of ecological security zones is, and the point-axis structure is constrained by the demand of food security and ecological security; (3) whether at the national or provincial levels, the most closely connected regional linkages is basically consistent with the development axis, and the interaction between the dominant regions with higher level of urbanization function in different levels determines the topological structure of the point-axis of the major function zones, which is more obvious in the region with the weak natural constraints and the relatively strong human activities. The results of this paper are helpful to scientifically cognize the scientific connotation and spatial organization law of the major function zoning, and provide the key indexes and parameters for the spatial planning and downscaling landing of the major function zones and also provide an important reference for the comprehensive geographical regionalization of China.

Key words: major function zoning, pole-axis system, territorial function, spatial structure, population migration big data, spatial analysis