A Study on the Driving Factors of Urban Expansion at the District Level Based on Geodetector:A Case Study of Chenggong District,Kunming City
Exploring the driving factors and their interaction mechanisms of urban expansion plays an im-portant role in the rational planning of cities.Most existing studies depict the characteristics and driving mechanisms of urban expansion from a macro perspective of large scales,which is difficult to meet the need for a fine representation of the urban expansion process.Therefore,this article proposed a detection method based on small-scale districts to explore the driving factors and mechanisms of urban expansion,aiming to address the aforementioned issues.Firstly,the characteristics of urban landscape expansion were characterized using the Multi-order Adjacency Index(MAI).Secondly,a spatial heterogeneity as-sociation model between MAI and driving factors was established using the Geodetector.Finally,the driving factors and their interaction mechanisms of urban landscape expansion were detected using the a-bove model.Taking Chenggong district of Kunming city as an example,the results show that:1)The urbanization development of Chenggong district has significant spatial and temporal heterogeneity,demon-strating the main driving mechanism of road construction supplemented by terrain slope during both high-speed and slow-down periods of urban expansion.2)In small-scale urban expansion,the interaction of multiple driving factors is more obvious.This study provides a reference for the fine description of the process of small-scale urban expansion and the exploration of its driving mechanism.
geodetectorurban expansion at district levelspatial scalemulti-order adjacency indexdriving factors
NETL
NSTL
万方数据
