Abstract:

Selecting the population data of settlement in 1934, 1982, and 2019 in Tumote plain, the distribution pattern evolution and its driving factors of settlement in the study area were analyzed through using GIS spatial analysis methods and combining qualitative and qualitative analysis. The results show that: during 1934-2019, the scale system of settlement in the study area was dominated by small settlement. The number and proportion of settlement with larger populations increased year by year and the population hierarchical structure showed a pyramid shape from “flat” to “long-tall”. The spatial distribution pattern of settlement showed the characteristics of agglomeration distribution as a whole. The agglomeration of large-scale settlements is not significant, and the distribution pattern of the other three levels of settlements changed from uniform to agglomeration distribution model. The population polarization in the study area was significant. The non-equilibrium development trend of the spatial distribution of the study area was obvious, showing signs of evolution from pole nucleus type to Pole-axis type. The spatial neighbor effect of network connection of settlement was significant, and the central urban area with a large population became a strong connection node. Terrain, river and traffic were the main driving factors for the evolution of the distribution pattern of the settlement in the study area during 1934-2019. The settlement showed strong spatial orientation to low altitude, and were significantly close to rivers, roads and towns. This study facilitates the clarification of the evolution of the settlement distribution patterns in the Tumut Plain in the past 100 years, and provides a certain reference value for the optimization and regulation of the spatial layout of local settlements.

Key words: settlement, distribution pattern, evolution, Tumote plain