基于地理探测器的南昌市人口空间格局与自然因素关系研究

On Relationship between Population Distribution and Natural Factors based on Geographic Detector

基于南昌市人口普查数据,利用空间自相关和地理探测器等方法,探讨南昌市人口空间分布与自然因素之间的关系.结果表明:①研究期间,南昌市人口空间格局基本保持不变,人口密度大致呈现“中心外围”格局,人口重心始终位于西湖区系马桩街道内部,并向西南方向缓慢移动.②人口分布在空间上呈显著的“高高集聚”“低低集聚”特征,且有增强趋势.③不同自然因素对南昌市人口空间分布的影响力有所不同,其由大到小依次是河网密度、起伏度、海拔、坡度.人口空间格局是多个因子综合作用的结果,任意两因子交互作用的影响力均大于单因子的影响力.

Based on the census data of Nanchang City,by means of spatial autocorrelation and geographic detectors to explore the relationship between the spatial distribution of population and natural factors in Nanchang City.The results show that,1)The spatial pattern of population in Nanchang remained basically unchanged,during 2000-2010,and the population density showed a pattern of“core and periphery”.The population center of gravity was always located in the inner of Ximazhuang street,which slowly moved to the southwest.2)The distribution of population shows the characteristics of“high cluster”and“low cluster”in geographical space,which was strengthened during ten years.3)The influence of different natural factors on the spatial distribution of population in Nanchang is different.The degree of influence were,in descending order,the density of the river network,the degree of surface undulation,height,and slope.The influence of any two factors is greater than that of a single factor.The spatial pattern of population is not determined by a single factor,but the result of multiple factors.