基于GIS的农村居民点分布特征研究

Using GIS spatial analysis technology, Voronoi diagrams theory, and the landscape pattern index analysis method, this paper studies spatial distribution characteristics, landscape layout characteristics of Dayao County which is a typical plateau area. The analysis results show that CV value of rural settlements in Dayao County is 94.53%, which demonstrates the distribution of rural settlements in Dayao County is in cluster; that all of 8 towns' CV values are greater than the Dayao's CV value, showing high cluster characteristics; In Dayao County, 2 ~ 5 level terrain is the advantage distribution range of rural settlements; terrain at level 3 and 4, a distribution of superior performance is more apparent; since terrain at level 5, with the increase of terrain, the area of rural settlements and the number of patches decrease, but average patch fractal dimension has little change, the size of patches are small and patches' shapes are irregular. This study shows the layout characteristics of rural settlements in Dayao and their related reasons, which can provide scientific basis for rural residential planning and construction.