中国各城市栅格层面人口分布数据

人口分布是指人口在一定时间内的空间存在形式、分布状况，包括各类地区总人口的分布，以及某些特定人口（如城市人口、特定的人口过程和构成（如迁移、性别等））的分布等。人口分布是受自然、社会、经济和政治等多种因素作用的结果。自然环境条件也（如纬度、海拔、距海远近等）对人口分布起重要作用。  20世纪以来，随世界范围的工业化和城市化进程的加速，社会、经济和政治等因素对人口分布的影响越来越大，越来越多的经济学家对人口与经济相互关系进行探讨，形成了专门的人口经济学。

Population distribution refers to the spatial manifestation and distribution pattern of the population within a specific timeframe, encompassing the distribution of the total population across various regions, as well as the distribution of specific demographic groups (e.g., urban populations) and specific demographic processes and structures (such as migration, gender, and so on). Population distribution is the outcome of a complex interplay of multiple factors, including natural, social, economic and political elements. Natural environmental conditions such as latitude, altitude, distance from the sea, and others also play a critical role in shaping population distribution.
Since the 20th century, with the accelerated progress of global industrialization and urbanization, the influence of social, economic and political factors on population distribution has grown increasingly significant. A growing number of economists have explored the mutual relationship between population and the economy, which has given rise to the specialized discipline of population economics.

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该数据集提供中国各城市在250*250米栅格层面的人口分布信息，覆盖年龄、性别、日夜间人口等多维度分类，更新频率高达每2分钟/次，数据可追溯至过去十年，适用于人口经济学和城市规划等研究。