[关键词]
[摘要]
青藏高原是我国重要的生态安全屏障,其人口分布与演变过程具有明显的特殊性。本文以青藏高原人口为研究对象,旨在揭示2000-2020年青藏高原人口的空间分布格局及其演变特征。研究整理第七次全国人口普查公报的分乡(镇)人口数据,构建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。
[Key word]
[Abstract]
The Qinghai-Tibet Plateau is an important ecological security barrier in China, and its population distribution and evolution also show obvious particularity. Taking the population of Qinghai-Tibet Plateau as the research object, this paper aims to reveal the spatial distribution pattern and evolution characteristics of the population in Qinghai-Tibet Plateau from 2000 to 2020. The research sorts out the population data of townships in the Bulletin of the Seventh National Census, and constructs the resident population data sets of townships in Qinghai-Tibet Plateau in 2000, 2010 and 2020. The research uses the gravity center analysis and the improved population concentration index. The results show that the population gravity center of Qinghai-Tibet Plateau is always located in Shiqu county, Sichuan Province from 2000 to 2020, during which the population center of gravity moves slightly to the west. The population distribution in the whole region shows the spatial pattern characteristics of “mainly scattered”. The evaluation results of 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.
[中图分类号]
[基金项目]
2019年第二次青藏高原综合科学考察研究国家专项(2019QZKK0406):生态安全保障的地域功能类型与区划,负责人:徐勇;2019年第二次青藏高原综合科学考察研究国家专项子专题(2019QZKK040604):功能区可持续发展模式与管控技术,负责人:张文忠、田明。