| Summary: | 碩士 === 中國文化大學 === 地學研究所地理組 === 107 === While the population growth of Taiwan continues to decrease, urban population increases rapidly. This means Taiwan is facing problems that are rural-urban divide and resource distribution disparity. The study analyzed the village population by year of age datasets from 2000 to 2017 in the three main metropolitan areas, including Taipei city, Taichung city and Kaohsiung city in Taiwan. Through calculating the mean center of each metropolitan area, the temporal and spatial movements of the mean center were found to show the overall movement of the city. To understand the demographic change and city development, urban-rural gradient analysis, Global Moran's I, and migrant population age analysis were conducted
The results showed that the average mean center of population in the three metropolitan areas shifted toward different directions and movement speed. Taipei city mainly shifted to the north, Taichung city shifted to the south, and Kaohsiung city shifted to northeast. In urban-rural gradient analysis, the sprawl of Taipei was insignificant, while it was compared with Taichung city and Kaohsiung city. Population grew in suburbs of Taipei city. The core and areas around the core in Taichung city exhibits sprawl. Kaohsiung city exhibits sprawl in the areas around the core. Moran’s I analysis showed that only population in Taichung showed compact and moved to high density areas, while population in Taipei and Kaohsiung moved to lower density areas. The study analyzed migrants by the year of age from 15 to 59. Immigration population in Taipei city moved into the suburbs. But the immigration population in Taichung moved into the core and the areas around it. And that in Kaohsiung only moved into the areas around the core. For the distribution of emigration population, they appeared in the core and the areas around it in Taipei, in suburbs in Taichung, and in core and suburbs in Kaohsiung. In conclusion, the population in Taipei migrated to lower density areas and the city was suburbanizing; Taichung showed the compactness of urbanization and it’s population was sprawling; and the population of Kaohsiung was migrating to lower density areas and around the core.
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