青藏高原人口空间分布格局及其演变特征

Spatial Distribution Pattern and Evolution Characteristics of Population in Qinghai-Tibet Plateau

本研究以青藏高原人口为研究对象,揭示了2000~2020年青藏高原人口的空间分布格局及其演变特征,整理了第七次全国人口普查公报的分乡(镇)人口数据,构建了2000年、2010年和2020年青藏高原分乡镇街道常住人口数据集。研究方法采用重心分析法和改进后的人口集聚度指数。分析结果表明,2000~2020年青藏高原人口重心始终位于四川省石渠县境内,在此期间人口重心略微向西移动;全域人口分布显著呈现“小集聚、大分散”的空间格局特征;不同区划和省区间人口集聚度评价结果差异显著,但各地内部的人口集疏模式保持相对稳定。研究结果为合理引导人口流动,优化青藏高原人口集疏的空间格局提供了政策启示。

The population of Qinghai-Tibet Plateau was taken as the research object to reveal the spatial distribution pattern and evolution characteristics of the population in Qinghai-Tibet Plateau from 2000 to 2020.The research sorted out the population data of townships in the Bulletin of the Seventh National Census,and constructed the resident population data sets of townships in Qinghai-Tibet Plateau in 2000,2010 and 2020.The research used the gravity center analysis and the improved population concentration index.The results show that the population gravity center of Qinghai-Tibet Plateau was always located in Shiqu county,Sichuan Province from 2000 to 2020,during which the population center of gravity moved slightly to the west.The population distribution in the whole region shows the spatial pattern characteristics of"mainly scattered".The evaluation results of the population concentration degree in different regions and provinces are significantly different,but the population concentration and dispersion patterns within each region remain relatively stable.This research provides policy enlightenment for reasonably guiding the population flow and optimizing the spatial pattern of population concentration and dispersion in Qinghai-Tibet Plateau.