草原牧区居民点空间离散度与网络构建关联分析——以锡林郭勒盟东乌珠穆沁旗为例

Relevance Analysis of Residential Spatial Dispersion and Network Construction of Grassland Pastoral Areas with Low Population Density--A Case Study of East Ujimqin Banner,Xilingol League,Inner Mongolia

低人口密度的草原牧区空间结构特殊性明显,空间布局离散、空间结构不完整是居民点布局的主要特征。本文将空间距离判断与社会网络分析方法相结合,挖掘低人口密度草原牧区居民点的空间离散与网络特征,通过多元方差分析和差异性检验,量化研究居民点空间离散指标和空间网络节点指标的作用关系。结果表明,东乌珠穆沁旗居民点布局的小集聚、大分散的空间离散特征明显,多边形面积与网络节点度相关性显著,空间网络节点紧密度受空间离散距离的影响最为显著,节点中介度受空间距离影响不大。研究将为低人口密度地区居民点布局优化与空间网络体系构建,地域化、类型化的空间形态与结构研究提供参考。

The spatial structure of residential areas with low population density is special and is mainly characterized with dispersed spatial layout and incomplete spatial structure.Current study combined the spatial distance judgment with the social network analysis method to explore the spatial dispersion and network characteristics of residential areas with low population density.Through multivariate analysis of variance and difference test,we quantified the relevance relationship between the spatial dispersion indicators of residential areas(polygon area,average center of gravity distance,standard deviation of spatial distance)and the spatial network node indicators(degree,medianity,tightness of network node),and then summarized the interaction characteristics of network node spatial distance.The results showed that the spatial dispersion characteristics of small agglomeration and large dispersion were obvious,the polygon area and network node degree had significant correlation characteristics.The tightness of spatial network nodes was most significantly affected by the spatial dispersion distance,and the node mediation was not significantly affected by spatial distance.This study provided reference for the layout optimization of residential areas with low population density and the construction of spatial network system,as well as the study of regional and typified spatial form and structure.