气候与城市人口密度的关联性研究

EXPLORATORY ANALYSIS ON THE RELEVANCE BETWEEN CLIMATE AND URBAN POPULATION DENSITY

基于80个城市数据分析气候指标与城市人口密度的关系,并对分布在不同气候区的4个案例城市进行了深入研究,探讨气候指标与城市人口密度分布的关联性。统计分析结果表明:基于气候指标差异,只有内部热增益指数与市域人口密度显著相关;基于气候区域差异,则不同气候区的城市人口密度呈现出显著的差异性。通过案例研究发现,城市蔓延度与人口分布均衡度等指标与部分气候条件具有相关性。研究同时表明,聚类分析结果能够解释我国现有的热工气候分区和气象地理区划的部分成因,并能够为提出更加细致的气候区划提供参考。未来应深入调查具有相似文化环境和物理环境的城市在不同气候条件下的人口密度差异。

Based on the data analysis of relation between climate index and urban population density in 80 cities, and intensive study of four cities distributed in different climate zones, this paper discusses the relevance between climate index and urban population density. The result shows that： based on the variations of climatic index, only Internal Heat Gain Index is closely related to the urban population density; based on the regional climatic differences, cities in different climate zones show remarkable difference in population density. Through the case study, it is found that Urban Sprawl Index and Gini Coefficient are significantly correlated with part of urban climate conditions.The results of cluster analysis could also explain some of the causes of the existing thermal climate zoning and meteorological geography zoning in China, as well as providing a solid foundation for more detailed climate re-zoning in the future. It is suggested that further studies should investigate the population density variation of cities with similar cultural and physical environments under different climate conditions.