Abstract：To define the spatial distribution pattern of point objects,a new approach is introduced,which employs the variation coefficient CV of the area of Voronoi polygons.Based on the National Resources and Environmental Database,this paper studies the spatial distribution pattern of rural settlements in Anhui province,the central China.The result shows that,generally,the spatial distribution pattern of all rural settlements in Anhui province,belongs to the clustered distribution.However,the spatial distribution pattern of those rural settlements,at the central and northern parts af Anhui province,is in the random distribution.The possible reason may be that those rural settlements are at the regions of the plain or low hills,the factors to influence their spatial distribution are not too strong to find their ideal sites freely.On the other hand,at the western or southern parts of Anhui province,because of the terrain effects at mountain area, the locations of rural settlements only be at the sites,which have better natural conditions,such as enough water and arable land,and so forth.And so,their spatial distribution pattern is the clustered distribution.Compared with the method of using the nearest neighbor index,the strong correlation between the nearest neighbor index and CV value shows the method based on the CV of Voronoi polygons' area is a feasible and efficient one.
收稿日期: 2005-03-25
引用本文:
张红 王新生 余瑞林. 基于Voronoi图的测度点状目标空间分布特征的方法[J]. , 2005, 44(3): 0-0.
张红 王新生 余瑞林. Voronoi diagram to study the spatial distribution pattern of point sets. , 2005, 44(3): 0-0.
