从图斑的微观角度,以GIS为平台,通过计算临高县居民点分布的泰森多边形面积的变异系数(CV值),结合人口密度图及地形模型,分析了临高县居民点的空间分布特征.结果表明,临高县有11个乡镇均为集群分布.同时计算了CV值与最近邻点指数的相关系数,表明两者呈显著负相关关系.该方法能够有效地表达点状目标的空间分布特征.研究结果可以为土地的合理利用提供决策依据.
From the micro-view of map, taking GIS as the platform, through the variation coefficient calculation of thiessen polygon area (CV), combined with population density map and terrain model, this paper analyzed the spatial distribution characteristics of Lingao County residents. The results show that 11 towns belong to clustered distribution The correlation between CV value and the nearest neighbor index was calculated, indicating that the two methods have a significant negative correlation. Therefore, CV value can effectively express the spatial distribution characteristics of points. The result can provide decision-making basis for reasonable land use.