基于Voronoi图的丹顶鹤巢址空间格局分析

Spatial pattern of red-crowned crane nest-sites based on Voronoi diagram

依据1996年、2003—2007年扎龙保护区丹顶鹤巢址数据,利用Voronoi图理论,分析了巢址的空间分布特征,计算了其拓扑指数—Voronoi图面积。结果表明,丹顶鹤巢址空间分布具有明显的空间聚类特征。以扎龙保护区的2006年巢址、居民点、国道和铁路为对象,构成其Voronoi图,较好地说明了人类活动对丹顶鹤巢址的空间格局的影响,研究结果对丹顶鹤栖息地的保护将起到重要作用。

By using the investigation data of red-crowned crane nest-sites in the Zhalong National Nature Reserve in 1996 and 2003-2007, the characteristics of the spatial distribution of the nestsites were analyzed, and the topological index （Voronoi diagram area） was calculated. The results showed that the spatial distribution of red-crowned crane nest-sites featured in the form of spatial clustering. The nest-sites, residential areas, national highways, and railways in the reserve in 2006 were used as the objects to construct Voronoi diagrams, which better explained the influences of human activities on the spatial pattern of the nest-sites and would be beneficial to the protection of red-crowned crane habitats.