青藏高原城镇化时空格局变化及自然驱动因素分析

青藏高原特殊的自然条件导致了其较低的城镇化发展水平,分析青藏高原城镇化发展的时空格局与成因对推动当地未来的新型城镇化具有重要的指导意义。本文利用1990-2020年历次人口普查数据,对青藏高原范围内县域单元的城镇化水平时空变化进行分析,并利用地理探测器分析导致城镇化格局形成的自然地理因素。结果表明：青藏高原地区整体城镇化水平较低,城镇化率波动较大,区域差异明显,且差异有减小的趋势；城镇化水平较高的地区集中在行政中心与高原东部边缘地区,高原中部部分地区存在城镇化率下降的情况；地形因素是影响青藏高原地区城镇化发展的主要自然因素。

Spatio-temporal Pattern Change and Natural Influencing Factors of Urbanization in Tibetan Plateau

The special natural conditions of Tibetan Plateau have led to its low level of urbanization development. Understanding the spatio-temporal pattern and causes of urbanization development in Tibetan Plateau has important guiding significance for promoting future New-type Urbanization. Based on the population census data from 1990 to 2020, this paper analyzes the spatial and temporal changes of the urbanization level of county units in Tibetan Plateau, and uses geographical detector to analyze the natural driving factors leading to the formation of urbanization pattern. The results show that the overall urbanization level in Tibetan Plateau is low, the urbanization rate fluctuates greatly, and the regional differences are obvious, and the differences tend to decrease. The areas with higher urbanization level are concentrated in the administrative center and the eastern edge of the plateau, and some areas in the middle of the plateau still have a decline in urbanization rate. Topographic factors are the main natural factors affecting the development of urbanization in Tibetan Plateau.